{"title":"Orton","description":"","products":[{"product_id":"orton-bars-04","title":"Orton Bars - 04","description":"\u003ch2 class=\"abz-seo-product\"\u003eORTON BARS - 04 : Box of 50\u003c\/h2\u003e\n\u003ch2 class=\"abz-seo-product\"\u003ePyrometric Bars\u003c\/h2\u003e\n\u003cp\u003eSmall cones and Pyrometric bars are used in the Kiln-Sitter®, a mechanical switch that cuts off power in electric kilns. Small cones are occasionally used as witness cones, but caution is recommended, since these shorter cones require slightly higher temperatures to bend, as compared with Large or Self-supporting cones.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_bars_8523d008-010a-496f-b4cd-c8e1230dad6d.jpg?v=1685085463\" alt=\"orton bars\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/p\u003e\n\u003cp\u003ePyrometric Bars are 1 inch (2.54 cm) Long. The uniform shape allows for more consistent control when used in Kiln-Sitter.\u003c\/p\u003e\n\u003cp\u003eTemperature Equivalents use the same numbering system as small cones.\u003c\/p\u003e\n\u003cp\u003eView Temperature Equivalents in either \u003ca href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" title=\"Orton Cones chart\"\u003eDegrees C or Degrees F chart\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUnder most conditions, the small cone or bar used in the kiln shut-off device will need to be one number higher than the shelf cone or witness cone. For example, to achieve a cone 04 witness cone in the kiln a small 03 cone is generally used in the shut off device.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuestions?\u003c\/strong\u003e Call us at 1-888-774-2529.\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45078482125122,"sku":"OB04","price":18.98,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/Orton-Pyrometric-Bars.jpg?v=1729085051"},{"product_id":"orton-bars-06","title":"Orton Bars - 06","description":"\u003ch2 class=\"abz-seo-product\"\u003eORTON BARS - 06 : Box of 50\u003c\/h2\u003e\n\u003ch2 class=\"abz-seo-product\"\u003ePyrometric Bars\u003c\/h2\u003e\n\u003cp\u003eSmall cones and Pyrometric bars are used in the Kiln-Sitter®, a mechanical switch that cuts off power in electric kilns. Small cones are occasionally used as witness cones, but caution is recommended, since these shorter cones require slightly higher temperatures to bend, as compared with Large or Self-supporting cones.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_bars_8523d008-010a-496f-b4cd-c8e1230dad6d.jpg?v=1685085463\" alt=\"orton bars\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/p\u003e\n\u003cp\u003ePyrometric Bars are 1 inch (2.54 cm) Long. The uniform shape allows for more consistent control when used in Kiln-Sitter.\u003c\/p\u003e\n\u003cp\u003eTemperature Equivalents use the same numbering system as small cones.\u003c\/p\u003e\n\u003cp\u003eView Temperature Equivalents in either \u003ca href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" title=\"Orton Cones chart\"\u003eDegrees C or Degrees F chart\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUnder most conditions, the small cone or bar used in the kiln shut-off device will need to be one number higher than the shelf cone or witness cone. For example, to achieve a cone 04 witness cone in the kiln a small 03 cone is generally used in the shut off device.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuestions?\u003c\/strong\u003e Call us at 1-888-774-2529.\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45078482354498,"sku":"OB06","price":18.98,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/Orton-Pyrometric-Bars.jpg?v=1729085051"},{"product_id":"orton-bars-1","title":"Orton Bars - 1","description":"\u003ch2 class=\"abz-seo-product\"\u003eORTON BARS - 1 : Box of 50\u003cbr\u003ePyrometric Bars\u003c\/h2\u003e\n\u003cp\u003eSmall cones and Pyrometric bars are used in the Kiln-Sitter®, a mechanical switch that cuts off power in electric kilns. Small cones are occasionally used as witness cones, but caution is recommended, since these shorter cones require slightly higher temperatures to bend, as compared with Large or Self-supporting cones.\u003c\/p\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_bars_8523d008-010a-496f-b4cd-c8e1230dad6d.jpg?v=1685085463\" border=\"0\" alt=\"orton bars\" align=\"\" style=\"float: left;\" data-mce-style=\"float: left;\"\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003ePyrometric Bars are 1 inch (2.54 cm) Long. The uniform shape allows for more consistent control when used in Kiln-Sitter.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eTemperature Equivalents use the same numbering system as small cones.\u003c\/p\u003e\n\u003cp\u003eView Temperature Equivalents in either \u003ca title=\"Orton Cones chart\" href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\"\u003eDegrees C or Degrees F chart\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eUnder most conditions, the small cone or bar used in the kiln shut-off device will need to be one number higher than the shelf cone or witness cone. For example, to achieve a cone 04 witness cone in the kiln a small 03 cone is generally used in the shut off device.\u003c\/b\u003e\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45078482387266,"sku":"OB1","price":18.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/Orton-Pyrometric-Bars.jpg?v=1729085051"},{"product_id":"orton-cones-large-cones-11","title":"Orton Cones: Large Cones - 11","description":"\u003cp\u003e\u003cb\u003eORTON SELF-SUPPORTING - 11 : Box of 50\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eOrton cones, pyrometric cones or witness cones are for accurate kiln firing. Order online from Sheffield Pottery Ceramic Supply.\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003eOrton Pyrometric Cones for Ceramic Arts\u003c\/h2\u003e\n\u003cp\u003ePyrometric cones measure heat-work (the effect of time and temperature).\u003c\/p\u003e\n\u003cp\u003eOrton Pyrometric cones are slender pyramids made from about 100 carefully controlled compositions. Each cone number is unique in measuring temperature within a small temperature range (less than 30°C). Cones measure the amount of heat absorbed. As the cone nears its maturing range, it softens and the tip begins to bend, drawn down by the influence of gravity.\u003c\/p\u003e\n\u003cp\u003e\u003cimg align=\"\" alt=\"Orton Cones, Witness Cones\" border=\"0\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_3_cones_3585b61b-52d7-4b86-85eb-319c6915b1c0.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003eOrton also provides a computer program to relate bending behavior of cones to temperature, heating rate and hold time.\u003c\/p\u003e\n\u003cp\u003eLarge and Self-Supporting cones are used as witness cones to monitor the firing and verify temperature uniformity.\u003c\/p\u003e\n\u003cp\u003eAlso see the \u003ca href=\"\/Orton_Cone_Chart_s\/314.htm\" title=\"Orton Cones Temperatures Chart\"\u003eOrton Cone Chart\u003c\/a\u003e for temperature equivalent tables and Charts for converting cone bending angle to temperature. \u003c\/p\u003e\n\u003cbr\u003e\u003cspan style=\"font-weight: bold; font-size: 12pt;\"\u003eOrton Cone Temperature Equivilancies\u003c\/span\u003e\u003cbr\u003e \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/cone_wall_chart_horiz_f89377ac-cd8b-4f9e-acfa-084855efbc1c.pdf?v=1685352031\" title=\"Orton Cone Chart\" target=\"_blank\"\u003e\u003cimg align=\"left\" alt=\"orton cone chart pdf\" border=\"0\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_cone_wall_chart_horiz_f9550ca0-5d09-45fe-8fdb-47d522d85799.jpg?v=1685085521\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/cone_wall_chart_horiz_f89377ac-cd8b-4f9e-acfa-084855efbc1c.pdf?v=1685352031\" title=\"Orton Cone Chart\" target=\"_blank\"\u003eDownload and Print the Complete Orton Cone Wall Chart... Here.\u003c\/a\u003e\u003cbr\u003e \u003cbr\u003e Orton manufactures four different types of cones (Small cones, Bar cones, Large cones and Self-supporting cones). \u003cbr\u003e \u003cbr\u003eThe Large and Self-supporting cones are used to measure temperature uniformity and\/or if there was sufficient heatwork done to mature the ware. Cones indicate whether the ware received an adequate amount of heatwork to properly mature the clay or glaze. A properly fired cone will bend over with the tip of the cone almost touching the shelf. After firing a kiln, a simple glance at the cone can tell if the firing was sucessful.\u003cbr\u003e \u003cbr\u003eThe small and bar cones are mainly used in the kiln shut-off device called the Kilnsitter. This is a mechanical device that shuts off the kiln when the temperature inside is sufficient to cause the cone to deform under the weight of the Kilnsitter rod.\u003cbr\u003e \u003cbr\u003eThe only \u003cspan style=\"font-weight: bold;\"\u003etrue\u003c\/span\u003e measurement of heatwork is from a Large or Self-supporting cone placed on the shelf next to the ware.\u003cbr\u003e\u003cbr\u003eCONE NUMBERS - Orton makes cones from cone 022 up to cone 42. Cone 022 is the lowest melting cone and requires the least amount of heat to deform or bend. During firing, a cone softens and melts as it is heated. Cones used on the kiln shelf bend due to the effects of gravity pulling the tip down. This bending indicates the cone and the ware have received a specific amount of heat. It typically takes 15 to 22 minutes for cones to bend fully once they start bending. Each higher cone number requires more heat to bend. A cone 01 needs less heat treatment than cone 1 and cone 020 needs less than 019. \u003cbr\u003eIt is important not to confuse the lower maturing cones and bars, whose numbers begin with an 0, with the higher cones and bars not containing this prefix. \u003cbr\u003eAlthough cones do not actually measure temperature, cone bending behavior and temperature are related. Generally, the faster the firing, the higher the temperature required to bend the cone and the slower the firing, the lower the temperature required to bend the cone. The 6 o'clock position (90 angular degrees) is considered the end point of cone bending. \u003cbr\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45078482649410,"sku":"OL11","price":22.69,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/OL11-Highres.jpg?v=1782922870"},{"product_id":"orton-large-3-hole-cones-plaques","title":"Orton LARGE 3 Hole Cones Plaques","description":"\u003ch2 class=\"abz-seo-product\"\u003eORTON LARGE 3 HOLE CONES PLAQUES\u003c\/h2\u003e\nRegular plaques :\u003cbr\u003e Fits Large Orton Pyrometric cones.\u003cbr\u003eTake the guesswork out of making cone packs. With these the angle is always correct which is critically imperative to ensure an accurate reading of the cone temperature achieved by your witness cones.\u003cbr\u003eRated for all temperatures up to cone 16 (1475\"C)\u003cbr\u003eUse in electric or gas kiln.\u003cbr\u003eCan be coated with kiln wash and reused until a melted cone becomes completely fused.\u003cbr\u003e\u003cbr\u003eSee quantity discount for full box of 50 price. \u003cbr\u003e\u003cbr\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45078482813250,"sku":"OLCP","price":2.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/0c3047_8156e503073142efbd84006a02ea1f75_mv2.jpg?v=1693341981"},{"product_id":"orton-cone-plaques-box-of-50","title":"Orton cone plaques box of 50 for Large Cones","description":"\u003cp\u003eOrton cone plaques box of 50 for Large Cones\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45078482846018,"sku":"OLCP50","price":54.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/0c3047_8156e503073142efbd84006a02ea1f75_mv2.webp?v=1784554329"},{"product_id":"orton-cones-small-cones-06","title":"Orton Cones: Small Cones - 06","description":"\u003cp\u003e\u003cb\u003eORTON SMALL CONES - 6 : Box of 50\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eOrton cones, pyrometric cones or witness cones are for accurate kiln firing. Order online from Sheffield Pottery Ceramic Supply.\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003eOrton Pyrometric Cones for Ceramic Arts\u003c\/h2\u003e\n\u003cp\u003ePyrometric cones measure heat-work (the effect of time and temperature).\u003c\/p\u003e\n\u003cp\u003eOrton Pyrometric cones are slender pyramids made from about 100 carefully controlled compositions. Each cone number is unique in measuring temperature within a small temperature range (less than 30°C). Cones measure the amount of heat absorbed. As the cone nears its maturing range, it softens and the tip begins to bend, drawn down by the influence of gravity.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_3_cones_3585b61b-52d7-4b86-85eb-319c6915b1c0.jpg\" border=\"0\" alt=\"Orton Cones, Witness Cones\" align=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003eOrton also provides a computer program to relate bending behavior of cones to temperature, heating rate and hold time.\u003c\/p\u003e\n\u003cp\u003eLarge and Self-Supporting cones are used as witness cones to monitor the firing and verify temperature uniformity.\u003c\/p\u003e\n\u003cp\u003eAlso see the \u003ca title=\"Orton Cones Temperatures Chart\" href=\"\/Orton_Cone_Chart_s\/314.htm\"\u003eOrton Cone Chart\u003c\/a\u003e for temperature equivalent tables and Charts for converting cone bending angle to temperature.\u003c\/p\u003e\n\u003cbr\u003e\u003cspan style=\"font-weight: bold; font-size: 12pt;\"\u003eOrton Cone Temperature Equivilancies\u003c\/span\u003e\u003cbr\u003e \u003ca title=\"Orton Cone Chart\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/cone_wall_chart_horiz_f89377ac-cd8b-4f9e-acfa-084855efbc1c.pdf?v=1685352031\" target=\"_blank\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_cone_wall_chart_horiz_f9550ca0-5d09-45fe-8fdb-47d522d85799.jpg?v=1685085521\" border=\"0\" alt=\"orton cone chart pdf\" align=\"left\"\u003e\u003c\/a\u003e\u003ca title=\"Orton Cone Chart\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/cone_wall_chart_horiz_f89377ac-cd8b-4f9e-acfa-084855efbc1c.pdf?v=1685352031\" target=\"_blank\"\u003eDownload and Print the Complete Orton Cone Wall Chart... Here.\u003c\/a\u003e\u003cbr\u003e \u003cbr\u003e Orton manufactures four different types of cones (Small cones, Bar cones, Large cones and Self-supporting cones). \u003cbr\u003e \u003cbr\u003eThe Large and Self-supporting cones are used to measure temperature uniformity and\/or if there was sufficient heatwork done to mature the ware. Cones indicate whether the ware received an adequate amount of heatwork to properly mature the clay or glaze. A properly fired cone will bend over with the tip of the cone almost touching the shelf. After firing a kiln, a simple glance at the cone can tell if the firing was sucessful.\u003cbr\u003e \u003cbr\u003eThe small and bar cones are mainly used in the kiln shut-off device called the Kilnsitter. This is a mechanical device that shuts off the kiln when the temperature inside is sufficient to cause the cone to deform under the weight of the Kilnsitter rod.\u003cbr\u003e \u003cbr\u003eThe only \u003cspan style=\"font-weight: bold;\"\u003etrue\u003c\/span\u003e measurement of heatwork is from a Large or Self-supporting cone placed on the shelf next to the ware.\u003cbr\u003e\u003cbr\u003eCONE NUMBERS - Orton makes cones from cone 022 up to cone 42. Cone 022 is the lowest melting cone and requires the least amount of heat to deform or bend. During firing, a cone softens and melts as it is heated. Cones used on the kiln shelf bend due to the effects of gravity pulling the tip down. This bending indicates the cone and the ware have received a specific amount of heat. It typically takes 15 to 22 minutes for cones to bend fully once they start bending. Each higher cone number requires more heat to bend. A cone 01 needs less heat treatment than cone 1 and cone 020 needs less than 019. \u003cbr\u003eIt is important not to confuse the lower maturing cones and bars, whose numbers begin with an 0, with the higher cones and bars not containing this prefix. \u003cbr\u003eAlthough cones do not actually measure temperature, cone bending behavior and temperature are related. Generally, the faster the firing, the higher the temperature required to bend the cone and the slower the firing, the lower the temperature required to bend the cone. The 6 o'clock position (90 angular degrees) is considered the end point of cone bending. \u003cbr\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45078483009858,"sku":"OS06","price":16.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/smallcones.jpg?v=1730298861"},{"product_id":"orton-cones-small-cones-08","title":"Orton Cones: Small Cones - 08","description":"\u003cp\u003e\u003cb\u003eORTON SELF-SUPPORTING - 8 : Box of 50\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eOrton cones, pyrometric cones or witness cones are for accurate kiln firing. Order online from Sheffield Pottery Ceramic Supply.\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003eOrton Pyrometric Cones for Ceramic Arts\u003c\/h2\u003e\n\u003cp\u003ePyrometric cones measure heat-work (the effect of time and temperature).\u003c\/p\u003e\n\u003cp\u003eOrton Pyrometric cones are slender pyramids made from about 100 carefully controlled compositions. Each cone number is unique in measuring temperature within a small temperature range (less than 30°C). Cones measure the amount of heat absorbed. As the cone nears its maturing range, it softens and the tip begins to bend, drawn down by the influence of gravity.\u003c\/p\u003e\n\u003cp\u003e\u003cimg align=\"\" alt=\"Orton Cones, Witness Cones\" border=\"0\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_3_cones_3585b61b-52d7-4b86-85eb-319c6915b1c0.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003eOrton also provides a computer program to relate bending behavior of cones to temperature, heating rate and hold time.\u003c\/p\u003e\n\u003cp\u003eLarge and Self-Supporting cones are used as witness cones to monitor the firing and verify temperature uniformity.\u003c\/p\u003e\n\u003cp\u003eAlso see the \u003ca href=\"\/Orton_Cone_Chart_s\/314.htm\" title=\"Orton Cones Temperatures Chart\"\u003eOrton Cone Chart\u003c\/a\u003e for temperature equivalent tables and Charts for converting cone bending angle to temperature.\u003c\/p\u003e\n\u003cbr\u003e\u003cspan style=\"font-weight: bold; font-size: 12pt;\"\u003eOrton Cone Temperature Equivilancies\u003c\/span\u003e\u003cbr\u003e \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/cone_wall_chart_horiz_f89377ac-cd8b-4f9e-acfa-084855efbc1c.pdf?v=1685352031\" title=\"Orton Cone Chart\" target=\"_blank\"\u003e\u003cimg align=\"left\" alt=\"orton cone chart pdf\" border=\"0\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_cone_wall_chart_horiz_f9550ca0-5d09-45fe-8fdb-47d522d85799.jpg?v=1685085521\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/cone_wall_chart_horiz_f89377ac-cd8b-4f9e-acfa-084855efbc1c.pdf?v=1685352031\" title=\"Orton Cone Chart\" target=\"_blank\"\u003eDownload and Print the Complete Orton Cone Wall Chart... Here.\u003c\/a\u003e\u003cbr\u003e \u003cbr\u003e Orton manufactures four different types of cones (Small cones, Bar cones, Large cones and Self-supporting cones). \u003cbr\u003e \u003cbr\u003eThe Large and Self-supporting cones are used to measure temperature uniformity and\/or if there was sufficient heatwork done to mature the ware. Cones indicate whether the ware received an adequate amount of heatwork to properly mature the clay or glaze. A properly fired cone will bend over with the tip of the cone almost touching the shelf. After firing a kiln, a simple glance at the cone can tell if the firing was sucessful.\u003cbr\u003e \u003cbr\u003eThe small and bar cones are mainly used in the kiln shut-off device called the Kilnsitter. This is a mechanical device that shuts off the kiln when the temperature inside is sufficient to cause the cone to deform under the weight of the Kilnsitter rod.\u003cbr\u003e \u003cbr\u003eThe only \u003cspan style=\"font-weight: bold;\"\u003etrue\u003c\/span\u003e measurement of heatwork is from a Large or Self-supporting cone placed on the shelf next to the ware.\u003cbr\u003e\u003cbr\u003eCONE NUMBERS - Orton makes cones from cone 022 up to cone 42. Cone 022 is the lowest melting cone and requires the least amount of heat to deform or bend. During firing, a cone softens and melts as it is heated. Cones used on the kiln shelf bend due to the effects of gravity pulling the tip down. This bending indicates the cone and the ware have received a specific amount of heat. It typically takes 15 to 22 minutes for cones to bend fully once they start bending. Each higher cone number requires more heat to bend. A cone 01 needs less heat treatment than cone 1 and cone 020 needs less than 019. \u003cbr\u003eIt is important not to confuse the lower maturing cones and bars, whose numbers begin with an 0, with the higher cones and bars not containing this prefix. \u003cbr\u003eAlthough cones do not actually measure temperature, cone bending behavior and temperature are related. Generally, the faster the firing, the higher the temperature required to bend the cone and the slower the firing, the lower the temperature required to bend the cone. The 6 o'clock position (90 angular degrees) is considered the end point of cone bending. \u003cbr\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45078483042626,"sku":"OS08","price":16.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/smallcones.jpg?v=1730298861"},{"product_id":"orton-cones-small-cones-10","title":"Orton Cones: Small Cones - 10","description":"\u003cp\u003e\u003cb\u003eORTON SMALL CONES - 10 : Box of 50\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eOrton cones, pyrometric cones or witness cones are for accurate kiln firing. Order online from Sheffield Pottery Ceramic Supply.\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003eOrton Pyrometric Cones for Ceramic Arts\u003c\/h2\u003e\n\u003cp\u003ePyrometric cones measure heat-work (the effect of time and temperature).\u003c\/p\u003e\n\u003cp\u003eOrton Pyrometric cones are slender pyramids made from about 100 carefully controlled compositions. Each cone number is unique in measuring temperature within a small temperature range (less than 30°C). Cones measure the amount of heat absorbed. As the cone nears its maturing range, it softens and the tip begins to bend, drawn down by the influence of gravity.\u003c\/p\u003e\n\u003cp\u003e\u003cimg align=\"\" alt=\"Orton Cones, Witness Cones\" border=\"0\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_3_cones_3585b61b-52d7-4b86-85eb-319c6915b1c0.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003eOrton also provides a computer program to relate bending behavior of cones to temperature, heating rate and hold time.\u003c\/p\u003e\n\u003cp\u003eLarge and Self-Supporting cones are used as witness cones to monitor the firing and verify temperature uniformity.\u003c\/p\u003e\n\u003cp\u003eAlso see the \u003ca href=\"\/Orton_Cone_Chart_s\/314.htm\" title=\"Orton Cones Temperatures Chart\"\u003eOrton Cone Chart\u003c\/a\u003e for temperature equivalent tables and Charts for converting cone bending angle to temperature.\u003c\/p\u003e\n\u003cbr\u003e\u003cspan style=\"font-weight: bold; font-size: 12pt;\"\u003eOrton Cone Temperature Equivilancies\u003c\/span\u003e\u003cbr\u003e \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/cone_wall_chart_horiz_f89377ac-cd8b-4f9e-acfa-084855efbc1c.pdf?v=1685352031\" title=\"Orton Cone Chart\" target=\"_blank\"\u003e\u003cimg align=\"left\" alt=\"orton cone chart pdf\" border=\"0\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_cone_wall_chart_horiz_f9550ca0-5d09-45fe-8fdb-47d522d85799.jpg?v=1685085521\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/cone_wall_chart_horiz_f89377ac-cd8b-4f9e-acfa-084855efbc1c.pdf?v=1685352031\" title=\"Orton Cone Chart\" target=\"_blank\"\u003eDownload and Print the Complete Orton Cone Wall Chart... Here.\u003c\/a\u003e\u003cbr\u003e \u003cbr\u003e Orton manufactures four different types of cones (Small cones, Bar cones, Large cones and Self-supporting cones). \u003cbr\u003e \u003cbr\u003eThe Large and Self-supporting cones are used to measure temperature uniformity and\/or if there was sufficient heatwork done to mature the ware. Cones indicate whether the ware received an adequate amount of heatwork to properly mature the clay or glaze. A properly fired cone will bend over with the tip of the cone almost touching the shelf. After firing a kiln, a simple glance at the cone can tell if the firing was sucessful.\u003cbr\u003e \u003cbr\u003eThe small and bar cones are mainly used in the kiln shut-off device called the Kilnsitter. This is a mechanical device that shuts off the kiln when the temperature inside is sufficient to cause the cone to deform under the weight of the Kilnsitter rod.\u003cbr\u003e \u003cbr\u003eThe only \u003cspan style=\"font-weight: bold;\"\u003etrue\u003c\/span\u003e measurement of heatwork is from a Large or Self-supporting  cone placed on the shelf next to the ware.\u003cbr\u003e\u003cbr\u003eCONE NUMBERS - Orton makes cones from cone 022 up to cone 42. Cone 022 is the lowest melting cone and requires the least amount of heat to deform or bend. During firing, a cone softens and melts as it is heated. Cones used on the kiln shelf bend due to the effects of gravity pulling the tip down. This bending indicates the cone and the ware have received a specific amount of heat. It typically takes 15 to 22 minutes for cones to bend fully once they start bending. Each higher cone number requires more heat to bend. A cone 01 needs less heat treatment than cone 1 and cone 020 needs less than 019. \u003cbr\u003eIt is important not to confuse the lower maturing cones and bars, whose numbers begin with an 0, with the higher cones and bars not containing this prefix. \u003cbr\u003eAlthough cones do not actually measure temperature, cone bending behavior and temperature are related. Generally, the faster the firing, the higher the temperature required to bend the cone and the slower the firing, the lower the temperature required to bend the cone. The 6 o'clock position (90 angular degrees) is considered the end point of cone bending. \u003cbr\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45078483075394,"sku":"OS10","price":16.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/smallcones.jpg?v=1730298861"},{"product_id":"orton-cones-small-cones-4","title":"Orton Cones: Small Cones - 4","description":"\u003cp\u003e\u003cb\u003eORTON SMALL CONES - 4 : Box of 50\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eOrton cones, pyrometric cones or witness cones are for accurate kiln firing. Order online from Sheffield Pottery Ceramic Supply.\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003eOrton Pyrometric Cones for Ceramic Arts\u003c\/h2\u003e\n\u003cp\u003ePyrometric cones measure heat-work (the effect of time and temperature).\u003c\/p\u003e\n\u003cp\u003eOrton Pyrometric cones are slender pyramids made from about 100 carefully controlled compositions. Each cone number is unique in measuring temperature within a small temperature range (less than 30°C). Cones measure the amount of heat absorbed. As the cone nears its maturing range, it softens and the tip begins to bend, drawn down by the influence of gravity.\u003c\/p\u003e\n\u003cp\u003e\u003cimg align=\"\" alt=\"Orton Cones, Witness Cones\" border=\"0\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_3_cones_3585b61b-52d7-4b86-85eb-319c6915b1c0.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003eOrton also provides a computer program to relate bending behavior of cones to temperature, heating rate and hold time.\u003c\/p\u003e\n\u003cp\u003eLarge and Self-Supporting cones are used as witness cones to monitor the firing and verify temperature uniformity.\u003c\/p\u003e\n\u003cp\u003eAlso see the \u003ca href=\"\/Orton_Cone_Chart_s\/314.htm\" title=\"Orton Cones Temperatures Chart\"\u003eOrton Cone Chart\u003c\/a\u003e for temperature equivalent tables and Charts for converting cone bending angle to temperature.\u003c\/p\u003e\n\u003cbr\u003e\u003cspan style=\"font-weight: bold; font-size: 12pt;\"\u003eOrton Cone Temperature Equivilancies\u003c\/span\u003e\u003cbr\u003e \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/cone_wall_chart_horiz_f89377ac-cd8b-4f9e-acfa-084855efbc1c.pdf?v=1685352031\" title=\"Orton Cone Chart\" target=\"_blank\"\u003e\u003cimg align=\"left\" alt=\"orton cone chart pdf\" border=\"0\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_cone_wall_chart_horiz_f9550ca0-5d09-45fe-8fdb-47d522d85799.jpg?v=1685085521\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/cone_wall_chart_horiz_f89377ac-cd8b-4f9e-acfa-084855efbc1c.pdf?v=1685352031\" title=\"Orton Cone Chart\" target=\"_blank\"\u003eDownload and Print the Complete Orton Cone Wall Chart... Here.\u003c\/a\u003e\u003cbr\u003e \u003cbr\u003e Orton manufactures four different types of cones (Small cones, Bar cones, Large cones and Self-supporting cones). \u003cbr\u003e \u003cbr\u003eThe Large and Self-supporting cones are used to measure temperature uniformity and\/or if there was sufficient heatwork done to mature the ware. Cones indicate whether the ware received an adequate amount of heatwork to properly mature the clay or glaze. A properly fired cone will bend over with the tip of the cone almost touching the shelf. After firing a kiln, a simple glance at the cone can tell if the firing was sucessful.\u003cbr\u003e \u003cbr\u003eThe small and bar cones are mainly used in the kiln shut-off device called the Kilnsitter. This is a mechanical device that shuts off the kiln when the temperature inside is sufficient to cause the cone to deform under the weight of the Kilnsitter rod.\u003cbr\u003e \u003cbr\u003eThe only \u003cspan style=\"font-weight: bold;\"\u003etrue\u003c\/span\u003e measurement of heatwork is from a Large or Self-supporting cone placed on the shelf next to the ware.\u003cbr\u003e\u003cbr\u003eCONE NUMBERS - Orton makes cones from cone 022 up to cone 42. Cone 022 is the lowest melting cone and requires the least amount of heat to deform or bend. During firing, a cone softens and melts as it is heated. Cones used on the kiln shelf bend due to the effects of gravity pulling the tip down. This bending indicates the cone and the ware have received a specific amount of heat. It typically takes 15 to 22 minutes for cones to bend fully once they start bending. Each higher cone number requires more heat to bend. A cone 01 needs less heat treatment than cone 1 and cone 020 needs less than 019. \u003cbr\u003eIt is important not to confuse the lower maturing cones and bars, whose numbers begin with an 0, with the higher cones and bars not containing this prefix. \u003cbr\u003eAlthough cones do not actually measure temperature, cone bending behavior and temperature are related. Generally, the faster the firing, the higher the temperature required to bend the cone and the slower the firing, the lower the temperature required to bend the cone. The 6 o'clock position (90 angular degrees) is considered  the end point of cone bending. \u003cbr\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45078483108162,"sku":"OS4","price":16.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/smallcones.jpg?v=1730298861"},{"product_id":"orton-cones-self-supporting-cones-018","title":"Orton Cones: Self-Supporting Cones - 018","description":"\u003cp\u003e\u003cb\u003eORTON Self-Supporting Cones - 18 : Box of 25\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eOrton cones, pyrometric cones or witness cones are for accurate kiln firing. Order online from Sheffield Pottery Ceramic Supply.\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003eOrton Pyrometric Cones for Ceramic Arts\u003c\/h2\u003e\n\u003cp\u003ePyrometric cones measure heat-work (the effect of time and temperature).\u003c\/p\u003e\n\u003cp\u003eOrton Pyrometric cones are slender pyramids made from about 100 carefully controlled compositions. Each cone number is unique in measuring temperature within a small temperature range (less than 30°C). Cones measure the amount of heat absorbed. As the cone nears its maturing range, it softens and the tip begins to bend, drawn down by the influence of gravity.\u003c\/p\u003e\n\u003cp\u003e\u003cimg align=\"\" alt=\"Orton Cones, Witness Cones\" border=\"0\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_3_cones_3585b61b-52d7-4b86-85eb-319c6915b1c0.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003eOrton also provides a computer program to relate bending behavior of cones to temperature, heating rate and hold time.\u003c\/p\u003e\n\u003cp\u003eLarge and Self-Supporting cones are used as witness cones to monitor the firing and verify temperature uniformity.\u003c\/p\u003e\n\u003cp\u003eAlso see the \u003ca href=\"\/Orton_Cone_Chart_s\/314.htm\" title=\"Orton Cones Temperatures Chart\"\u003eOrton Cone Chart\u003c\/a\u003e for temperature equivalent tables and Charts for converting cone bending angle to temperature.\u003c\/p\u003e\n\u003cbr\u003e\u003cspan style=\"font-weight: bold; font-size: 12pt;\"\u003eOrton Cone Temperature Equivilancies\u003c\/span\u003e\u003cbr\u003e \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/cone_wall_chart_horiz_f89377ac-cd8b-4f9e-acfa-084855efbc1c.pdf?v=1685352031\" title=\"Orton Cone Chart\" target=\"_blank\"\u003e\u003cimg align=\"left\" alt=\"orton cone chart pdf\" border=\"0\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_cone_wall_chart_horiz_f9550ca0-5d09-45fe-8fdb-47d522d85799.jpg?v=1685085521\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/cone_wall_chart_horiz_f89377ac-cd8b-4f9e-acfa-084855efbc1c.pdf?v=1685352031\" title=\"Orton Cone Chart\" target=\"_blank\"\u003eDownload and Print the Complete Orton Cone Wall Chart... Here.\u003c\/a\u003e\u003cbr\u003e \u003cbr\u003e Orton manufactures four different types of cones (Small cones, Bar cones, Large cones and Self-supporting cones). \u003cbr\u003e \u003cbr\u003eThe Large and Self-supporting cones are used to measure temperature uniformity and\/or if there was sufficient heatwork done to mature the ware. Cones indicate whether the ware received an adequate amount of heatwork to properly mature the clay or glaze. A properly fired cone will bend over with the tip of the cone almost touching the shelf. After firing a kiln, a simple glance at the cone can tell if the firing was sucessful.\u003cbr\u003e \u003cbr\u003eThe small and bar cones are mainly used in the kiln shut-off device called the Kilnsitter. This is a mechanical device that shuts off the kiln when the temperature inside is sufficient to cause the cone to deform under the weight of the Kilnsitter rod.\u003cbr\u003e \u003cbr\u003eThe only \u003cspan style=\"font-weight: bold;\"\u003etrue\u003c\/span\u003e measurement of heatwork is from a Large or Self-supporting cone placed on the shelf next to the ware.\u003cbr\u003e\u003cbr\u003eCONE NUMBERS - Orton makes cones from cone 022 up to cone 42. Cone 022 is the lowest melting cone and requires the least amount of heat to deform or bend. During firing, a cone softens and melts as it is heated. Cones used on the kiln shelf bend due to the effects of gravity pulling the tip down. This bending indicates the cone and the ware have received a specific amount of heat. It typically takes 15 to 22 minutes for cones to bend fully once they start bending. Each higher cone number requires more heat to bend. A cone 01 needs less heat treatment than cone 1 and cone 020 needs less than 019. \u003cbr\u003eIt is important not to confuse the lower maturing cones and bars, whose numbers begin with an 0, with the higher cones and bars not containing this prefix. \u003cbr\u003eAlthough cones do not actually measure temperature, cone bending behavior and temperature are related. Generally, the faster the firing, the higher the temperature required to bend the cone and the slower the firing, the lower the temperature required to bend the cone. The 6 o'clock position (90 angular degrees) is considered the end point of cone bending. \u003cbr\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45078483140930,"sku":"OSS018","price":17.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/OSS018.jpg?v=1730320416"},{"product_id":"orton-cones-self-supporting-cones-020","title":"Orton Cones: Self-Supporting Cones - 020","description":"\u003cp\u003e\u003cb\u003eORTON SELF-SUPPORTING -20 : Box of 25\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eOrton cones, pyrometric cones or witness cones are for accurate kiln firing. Order online from Sheffield Pottery Ceramic Supply.\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003eOrton Pyrometric Cones for Ceramic Arts\u003c\/h2\u003e\n\u003cp\u003ePyrometric cones measure heat-work (the effect of time and temperature).\u003c\/p\u003e\n\u003cp\u003eOrton Pyrometric cones are slender pyramids made from about 100 carefully controlled compositions. Each cone number is unique in measuring temperature within a small temperature range (less than 30°C). Cones measure the amount of heat absorbed. As the cone nears its maturing range, it softens and the tip begins to bend, drawn down by the influence of gravity.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_3_cones_3585b61b-52d7-4b86-85eb-319c6915b1c0.jpg\" border=\"0\" alt=\"Orton Cones, Witness Cones\" align=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003eOrton also provides a computer program to relate bending behavior of cones to temperature, heating rate and hold time.\u003c\/p\u003e\n\u003cp\u003eLarge and Self-Supporting cones are used as witness cones to monitor the firing and verify temperature uniformity.\u003c\/p\u003e\n\u003cp\u003eAlso see the \u003ca title=\"Orton Cones Temperatures Chart\" href=\"\/Orton_Cone_Chart_s\/314.htm\"\u003eOrton Cone Chart\u003c\/a\u003e for temperature equivalent tables and Charts for converting cone bending angle to temperature.\u003c\/p\u003e\n\u003cbr\u003e\u003cspan style=\"font-weight: bold; font-size: 12pt;\"\u003eOrton Cone Temperature Equivilancies\u003c\/span\u003e\u003cbr\u003e \u003ca title=\"Orton Cone Chart\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/cone_wall_chart_horiz_f89377ac-cd8b-4f9e-acfa-084855efbc1c.pdf?v=1685352031\" target=\"_blank\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_cone_wall_chart_horiz_f9550ca0-5d09-45fe-8fdb-47d522d85799.jpg?v=1685085521\" border=\"0\" alt=\"orton cone chart pdf\" align=\"left\"\u003e\u003c\/a\u003e\u003ca title=\"Orton Cone Chart\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/cone_wall_chart_horiz_f89377ac-cd8b-4f9e-acfa-084855efbc1c.pdf?v=1685352031\" target=\"_blank\"\u003eDownload and Print the Complete Orton Cone Wall Chart... Here.\u003c\/a\u003e\u003cbr\u003e \u003cbr\u003e Orton manufactures four different types of cones (Small cones, Bar cones, Large cones and Self-supporting cones). \u003cbr\u003e \u003cbr\u003eThe Large and Self-supporting cones are used to measure temperature uniformity and\/or if there was sufficient heatwork done to mature the ware. Cones indicate whether the ware received an adequate amount of heatwork to properly mature the clay or glaze. A properly fired cone will bend over with the tip of the cone almost touching the shelf. After firing a kiln, a simple glance at the cone can tell if the firing was sucessful.\u003cbr\u003e \u003cbr\u003eThe small and bar cones are mainly used in the kiln shut-off device called the Kilnsitter. This is a mechanical device that shuts off the kiln when the temperature inside is sufficient to cause the cone to deform under the weight of the Kilnsitter rod.\u003cbr\u003e \u003cbr\u003eThe only \u003cspan style=\"font-weight: bold;\"\u003etrue\u003c\/span\u003e measurement of heatwork is from a Large or Self-supporting cone placed on the shelf next to the ware.\u003cbr\u003e\u003cbr\u003eCONE NUMBERS - Orton makes cones from cone 022 up to cone 42. Cone 022 is the lowest melting cone and requires the least amount of heat to deform or bend. During firing, a cone softens and melts as it is heated. Cones used on the kiln shelf bend due to the effects of gravity pulling the tip down. This bending indicates the cone and the ware have received a specific amount of heat. It typically takes 15 to 22 minutes for cones to bend fully once they start bending. Each higher cone number requires more heat to bend. A cone 01 needs less heat treatment than cone 1 and cone 020 needs less than 019. \u003cbr\u003eIt is important not to confuse the lower maturing cones and bars, whose numbers begin with an 0, with the higher cones and bars not containing this prefix. \u003cbr\u003eAlthough cones do not actually measure temperature, cone bending behavior and temperature are related. Generally, the faster the firing, the higher the temperature required to bend the cone and the slower the firing, the lower the temperature required to bend the cone. The 6 o'clock position (90 angular degrees) is considered the end point of cone bending. \u003cbr\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45078483173698,"sku":"OSS020","price":17.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/OSS020.jpg?v=1730320416"},{"product_id":"orton-cones-self-supporting-cones-03","title":"Orton Cones: Self-Supporting Cones - 03","description":"\u003cp\u003e\u003cb\u003eORTON SELF-SUPPORTING -3 : Box of 25\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eOrton cones, pyrometric cones or witness cones are for accurate kiln firing. Order online from Sheffield Pottery Ceramic Supply.\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003eOrton Pyrometric Cones for Ceramic Arts\u003c\/h2\u003e\n\u003cp\u003ePyrometric cones measure heat-work (the effect of time and temperature).\u003c\/p\u003e\n\u003cp\u003eOrton Pyrometric cones are slender pyramids made from about 100 carefully controlled compositions. Each cone number is unique in measuring temperature within a small temperature range (less than 30°C). Cones measure the amount of heat absorbed. As the cone nears its maturing range, it softens and the tip begins to bend, drawn down by the influence of gravity.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_3_cones_3585b61b-52d7-4b86-85eb-319c6915b1c0.jpg\" border=\"0\" alt=\"Orton Cones, Witness Cones\" align=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e3 cone method for monitoring heat-work\u003c\/p\u003e\n\u003cp\u003eOrton also provides a computer program to relate bending behavior of cones to temperature, heating rate and hold time.\u003c\/p\u003e\n\u003cp\u003eLarge and Self-Supporting cones are used as witness cones to monitor the firing and verify temperature uniformity.\u003c\/p\u003e\n\u003cp\u003eAlso see the \u003ca title=\"Orton Cones Temperatures Chart\" href=\"\/Orton_Cone_Chart_s\/314.htm\"\u003eOrton Cone Chart\u003c\/a\u003e for temperature equivalent tables and Charts for converting cone bending angle to temperature.\u003c\/p\u003e\n\u003cbr\u003e\u003cspan style=\"font-weight: bold; font-size: 12pt;\"\u003eOrton Cone Temperature Equivilancies\u003c\/span\u003e\u003cbr\u003e \u003ca title=\"Orton Cone Chart\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/cone_wall_chart_horiz_f89377ac-cd8b-4f9e-acfa-084855efbc1c.pdf?v=1685352031\" target=\"_blank\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_cone_wall_chart_horiz_f9550ca0-5d09-45fe-8fdb-47d522d85799.jpg?v=1685085521\" border=\"0\" alt=\"orton cone chart pdf\" align=\"left\"\u003e\u003c\/a\u003e\u003ca title=\"Orton Cone Chart\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/cone_wall_chart_horiz_f89377ac-cd8b-4f9e-acfa-084855efbc1c.pdf?v=1685352031\" target=\"_blank\"\u003eDownload and Print the Complete Orton Cone Wall Chart... Here.\u003c\/a\u003e\u003cbr\u003e \u003cbr\u003e Orton manufactures four different types of cones (Small cones, Bar cones, Large cones and Self-supporting cones). \u003cbr\u003e \u003cbr\u003eThe Large and Self-supporting cones are used to measure temperature uniformity and\/or if there was sufficient heatwork done to mature the ware. Cones indicate whether the ware received an adequate amount of heatwork to properly mature the clay or glaze. A properly fired cone will bend over with the tip of the cone almost touching the shelf. After firing a kiln, a simple glance at the cone can tell if the firing was sucessful.\u003cbr\u003e \u003cbr\u003eThe small and bar cones are mainly used in the kiln shut-off device called the Kilnsitter. This is a mechanical device that shuts off the kiln when the temperature inside is sufficient to cause the cone to deform under the weight of the Kilnsitter rod.\u003cbr\u003e \u003cbr\u003eThe only \u003cspan style=\"font-weight: bold;\"\u003etrue\u003c\/span\u003e measurement of heatwork is from a Large or Self-supporting cone placed on the shelf next to the ware.\u003cbr\u003e\u003cbr\u003eCONE NUMBERS - Orton makes cones from cone 022 up to cone 42. Cone 022 is the lowest melting cone and requires the least amount of heat to deform or bend. During firing, a cone softens and melts as it is heated. Cones used on the kiln shelf bend due to the effects of gravity pulling the tip down. This bending indicates the cone and the ware have received a specific amount of heat. It typically takes 15 to 22 minutes for cones to bend fully once they start bending. Each higher cone number requires more heat to bend. A cone 01 needs less heat treatment than cone 1 and cone 020 needs less than 019. \u003cbr\u003eIt is important not to confuse the lower maturing cones and bars, whose numbers begin with an 0, with the higher cones and bars not containing this prefix. \u003cbr\u003eAlthough cones do not actually measure temperature, cone bending behavior and temperature are related. Generally, the faster the firing, the higher the temperature required to bend the cone and the slower the firing, the lower the temperature required to bend the cone. The 6 o'clock position (90 angular degrees) is considered the end point of cone bending. \u003cbr\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45078483206466,"sku":"OSS03","price":17.2,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton-cones-self-supporting-cones-03.jpg?v=1791875743"},{"product_id":"orton-cones-self-supporting-cones-6","title":"Orton Cones: Self-Supporting Cones - 6","description":"\u003cp\u003e\u003cb\u003eORTON Self-Supporting Cones -6 : Box of 25\u003c\/b\u003e\u003cbr\u003e\u003cb\u003eOrton cones, pyrometric cones or witness cones are for accurate kiln firing. Order online from Sheffield Pottery Ceramic Supply.\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003eOrton Pyrometric Cones for Ceramic Arts\u003c\/h2\u003e\n\u003cp\u003ePyrometric cones measure heat-work (the effect of time and temperature).\u003c\/p\u003e\n\u003cp\u003eOrton Pyrometric cones are slender pyramids made from about 100 carefully controlled compositions. Each cone number is unique in measuring temperature within a small temperature range (less than 30°C). Cones measure the amount of heat absorbed. As the cone nears its maturing range, it softens and the tip begins to bend, drawn down by the influence of gravity.\u003c\/p\u003e\n\u003cp\u003e\u003cimg align=\"\" alt=\"Orton Cones, Witness Cones\" border=\"0\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_3_cones_3585b61b-52d7-4b86-85eb-319c6915b1c0.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003e3 cone method for monitoring heat-work\u003c\/p\u003e\n\u003cp\u003eOrton also provides a computer program to relate bending behavior of cones to temperature, heating rate and hold time.\u003c\/p\u003e\n\u003cp\u003eLarge and Self-Supporting cones are used as witness cones to monitor the firing and verify temperature uniformity.\u003c\/p\u003e\n\u003cp\u003eAlso see the \u003ca href=\"\/Orton_Cone_Chart_s\/314.htm\" title=\"Orton Cones Temperatures Chart\"\u003eOrton Cone Chart\u003c\/a\u003e for temperature equivalent tables and Charts for converting cone bending angle to temperature.\u003c\/p\u003e\n\u003cbr\u003e\u003cspan style=\"font-weight: bold; font-size: 12pt;\"\u003eOrton Cone Temperature Equivilancies\u003c\/span\u003e\u003cbr\u003e \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/cone_wall_chart_horiz_f89377ac-cd8b-4f9e-acfa-084855efbc1c.pdf?v=1685352031\" title=\"Orton Cone Chart\" target=\"_blank\"\u003e\u003cimg align=\"left\" alt=\"orton cone chart pdf\" border=\"0\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_cone_wall_chart_horiz_f9550ca0-5d09-45fe-8fdb-47d522d85799.jpg?v=1685085521\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/cone_wall_chart_horiz_f89377ac-cd8b-4f9e-acfa-084855efbc1c.pdf?v=1685352031\" title=\"Orton Cone Chart\" target=\"_blank\"\u003eDownload and Print the Complete Orton Cone Wall Chart... Here.\u003c\/a\u003e\u003cbr\u003e \u003cbr\u003e Orton manufactures four different types of cones (Small cones, Bar cones, Large cones and Self-supporting cones). \u003cbr\u003e \u003cbr\u003eThe Large and Self-supporting cones are used to measure temperature uniformity and\/or if there was sufficient heatwork done to mature the ware. Cones indicate whether the ware received an adequate amount of heatwork to properly mature the clay or glaze. A properly fired cone will bend over with the tip of the cone almost touching the shelf. After firing a kiln, a simple glance at the cone can tell if the firing was sucessful.\u003cbr\u003e \u003cbr\u003eThe small and bar cones are mainly used in the kiln shut-off device called the Kilnsitter. This is a mechanical device that shuts off the kiln when the temperature inside is sufficient to cause the cone to deform under the weight of the Kilnsitter rod.\u003cbr\u003e \u003cbr\u003eThe only \u003cspan style=\"font-weight: bold;\"\u003etrue\u003c\/span\u003e measurement of heatwork is from a Large or Self-supporting cone placed on the shelf next to the ware.\u003cbr\u003e\u003cbr\u003eCONE NUMBERS - Orton makes cones from cone 022 up to cone 42. Cone 022 is the lowest melting cone and requires the least amount of heat to deform or bend. During firing, a cone softens and melts as it is heated. Cones used on the kiln shelf bend due to the effects of gravity pulling the tip down. This bending indicates the cone and the ware have received a specific amount of heat. It typically takes 15 to 22 minutes for cones to bend fully once they start bending. Each higher cone number requires more heat to bend. A cone 01 needs less heat treatment than cone 1 and cone 020 needs less than 019. \u003cbr\u003eIt is important not to confuse the lower maturing cones and bars, whose numbers begin with an 0, with the higher cones and bars not containing this prefix. \u003cbr\u003eAlthough cones do not actually measure temperature, cone bending behavior and temperature are related. Generally, the faster the firing, the higher the temperature required to bend the cone and the slower the firing, the lower the temperature required to bend the cone. The 6 o'clock position (90 angular degrees) is considered the end point of cone bending. \u003cbr\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45078483239234,"sku":"OSS6","price":17.2,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/OSS6.jpg?v=1730302454"},{"product_id":"orton-cones-self-supporting-cones-7","title":"Orton Cones: Self-Supporting Cones - 7","description":"\u003cspan style=\"font-weight: bold; font-size: 12pt;\"\u003eORTON SELF-SUPPORTING -7 : Box of 25\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-weight: bold;\"\u003eOrton cones, pyrometric cones or witness cones are for accurate kiln firing. Order online from Sheffield Pottery Ceramic Supply.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e border=\"0\" cellpadding=\"0\" cellspacing=\"0\" style=\"width: 701px; height: 451px;\"\u0026gt;\u0026gt;\n\u003ch2 class=\"abz-seo-product\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eOrton Pyrometric Cones for Ceramic Arts\u003c\/span\u003e\u003c\/h2\u003e\n\u003cdiv align=\"left\"\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003c\/div\u003e\nborder=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"100%\"\u0026gt; \u0026gt;\n\u003cdiv style=\"text-align: left;\"\u003e\u003c\/div\u003e\n\u003cp style=\"text-align: left;\"\u003ePyrometric cones measure heat-work (the effect of time and temperature).\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003c\/div\u003e\n\u003cp style=\"text-align: left;\"\u003eOrton Pyrometric cones are slender pyramids made from about 100 carefully controlled compositions. Each cone number is unique in measuring temperature within a small temperature range (less than 30°C). Cones measure the amount of heat absorbed. As the cone nears its maturing range, it softens and the tip begins to bend, drawn down by the influence of gravity.\u003c\/p\u003e\nborder=\"0\" cellpadding=\"0\" cellspacing=\"0\" id=\"Table_01\"\u0026gt; \u0026gt;\u003cbr\u003e \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_3_cones_3585b61b-52d7-4b86-85eb-319c6915b1c0.jpg?v=1685085494\" border=\"0\" alt=\"Orton Cones, Witness Cones\" align=\"\"\u003e\n\u003c\/div\u003e\n\u003cp\u003eOrton also provides a computer program to relate bending behavior of cones to temperature, heating rate and hold time.\u003c\/p\u003e\n\u003cp\u003eLarge and Self-Supporting cones are used as witness cones to monitor the firing and verify temperature uniformity.\u003c\/p\u003e\n\u003cp\u003eAlso see the \u003ca title=\"Orton Cones Temperatures Chart\" href=\"\/Orton_Cone_Chart_s\/314.htm\"\u003eOrton Cone Chart\u003c\/a\u003e for temperature equivalent tables and Charts for converting cone bending angle to temperature.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: bold; font-size: 12pt;\"\u003eOrton Cone Temperature Equivilancies\u003c\/span\u003e\u003cbr\u003e \u003ca title=\"Orton Cone Chart\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/cone_wall_chart_horiz_f89377ac-cd8b-4f9e-acfa-084855efbc1c.pdf?v=1685352031\" target=\"_blank\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_cone_wall_chart_horiz_f9550ca0-5d09-45fe-8fdb-47d522d85799.jpg?v=1685085521\" border=\"0\" alt=\"orton cone chart pdf\" align=\"left\"\u003e\u003c\/a\u003e\u003ca title=\"Orton Cone Chart\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/cone_wall_chart_horiz_f89377ac-cd8b-4f9e-acfa-084855efbc1c.pdf?v=1685352031\" target=\"_blank\"\u003eDownload and Print the Complete Orton Cone Wall Chart... Here.\u003c\/a\u003e\u003cbr\u003e \u003cbr\u003e Orton manufactures four different types of cones (Small cones, Bar cones, Large cones and Self-supporting cones).\u003cbr\u003eThe Large and Self-supporting cones are used to measure temperature uniformity and\/or if there was sufficient heatwork done to mature the ware. Cones indicate whether the ware received an adequate amount of heatwork to properly mature the clay or glaze. A properly fired cone will bend over with the tip of the cone almost touching the shelf. After firing a kiln, a simple glance at the cone can tell if the firing was sucessful.\u003c\/p\u003e\n\u003cp\u003eThe small and bar cones are mainly used in the kiln shut-off device called the Kilnsitter. This is a mechanical device that shuts off the kiln when the temperature inside is sufficient to cause the cone to deform under the weight of the Kilnsitter rod.\u003c\/p\u003e\n\u003cp\u003eThe only \u003cspan style=\"font-weight: bold;\"\u003etrue\u003c\/span\u003e measurement of heatwork is from a Large or Self-supporting cone placed on the shelf next to the ware.\u003c\/p\u003e\n\u003cp\u003eCONE NUMBERS - Orton makes cones from cone 022 up to cone 42. Cone 022 is the lowest melting cone and requires the least amount of heat to deform or bend. During firing, a cone softens and melts as it is heated. Cones used on the kiln shelf bend due to the effects of gravity pulling the tip down. This bending indicates the cone and the ware have received a specific amount of heat. It typically takes 15 to 22 minutes for cones to bend fully once they start bending. Each higher cone number requires more heat to bend. A cone 01 needs less heat treatment than cone 1 and cone 020 needs less than 019. \u003cbr\u003eIt is important not to confuse the lower maturing cones and bars, whose numbers begin with an 0, with the higher cones and bars not containing this prefix. \u003cbr\u003eAlthough cones do not actually measure temperature, cone bending behavior and temperature are related. Generally, the faster the firing, the higher the temperature required to bend the cone and the slower the firing, the lower the temperature required to bend the cone. The 6 o'clock position (90 angular degrees) is considered the end point of cone bending. \u003cbr\u003e\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45078483272002,"sku":"OSS7","price":17.2,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/OSS7.jpg?v=1730302454"},{"product_id":"orton-cones-self-supporting-cones-8","title":"Orton Cones: Self-Supporting Cones - 8","description":"\u003cspan style=\"font-weight: bold; font-size: 12pt;\"\u003eORTON SELF-SUPPORTING -8 : Box of 25\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-weight: bold;\"\u003eOrton cones, pyrometric cones or witness cones are for accurate kiln firing. Order online from Sheffield Pottery Ceramic Supply.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\n\u003ch2 class=\"abz-seo-product\"\u003eOrton Pyrometric Cones for Ceramic Arts\u003c\/h2\u003e\n\u003cp\u003ePyrometric cones measure heat-work (the effect of time and temperature).\u003c\/p\u003e\n\u003cp\u003eOrton Pyrometric cones are slender pyramids made from about 100 carefully controlled compositions. Each cone number is unique in measuring temperature within a small temperature range (less than 30°C). Cones measure the amount of heat absorbed. As the cone nears its maturing range, it softens and the tip begins to bend, drawn down by the influence of gravity.\u003c\/p\u003e\n\u003cimg align=\"\" alt=\"Orton Cones, Witness Cones\" border=\"0\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_3_cones_3585b61b-52d7-4b86-85eb-319c6915b1c0.jpg?v=1685085494\"\u003e3 cone method for monitoring heat-work\n\u003cp\u003eOrton also provides a computer program to relate bending behavior of cones to temperature, heating rate and hold time.\u003c\/p\u003e\n\u003cp\u003eLarge and Self-Supporting cones are used as witness cones to monitor the firing and verify temperature uniformity.\u003c\/p\u003e\n\u003cp\u003eAlso see the \u003ca href=\"\/Orton_Cone_Chart_s\/314.htm\" title=\"Orton Cones Temperatures Chart\"\u003eOrton Cone Chart\u003c\/a\u003e for temperature equivalent tables and Charts for converting cone bending angle to temperature.\u003c\/p\u003e\n\u003cbr\u003e\u003cspan style=\"font-weight: bold; font-size: 12pt;\"\u003eOrton Cone Temperature Equivilancies\u003c\/span\u003e\u003cbr\u003e \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/cone_wall_chart_horiz_f89377ac-cd8b-4f9e-acfa-084855efbc1c.pdf?v=1685352031\" title=\"Orton Cone Chart\" target=\"_blank\"\u003e\u003cimg align=\"left\" alt=\"orton cone chart pdf\" border=\"0\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_cone_wall_chart_horiz_f9550ca0-5d09-45fe-8fdb-47d522d85799.jpg?v=1685085521\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/cone_wall_chart_horiz_f89377ac-cd8b-4f9e-acfa-084855efbc1c.pdf?v=1685352031\" title=\"Orton Cone Chart\" target=\"_blank\"\u003eDownload and Print the Complete Orton Cone Wall Chart... Here.\u003c\/a\u003e\u003cbr\u003e \u003cbr\u003e Orton manufactures four different types of cones (Small cones, Bar cones, Large cones and Self-supporting cones). \u003cbr\u003e \u003cbr\u003eThe Large and Self-supporting cones are used to measure temperature uniformity and\/or if there was sufficient heatwork done to mature the ware. Cones indicate whether the ware received an adequate amount of heatwork to properly mature the clay or glaze. A properly fired cone will bend over with the tip of the cone almost touching the shelf. After firing a kiln, a simple glance at the cone can tell if the firing was sucessful.\u003cbr\u003e \u003cbr\u003eThe small and bar cones are mainly used in the kiln shut-off device called the Kilnsitter. This is a mechanical device that shuts off the kiln when the temperature inside is sufficient to cause the cone to deform under the weight of the Kilnsitter rod.\u003cbr\u003e \u003cbr\u003eThe only \u003cspan style=\"font-weight: bold;\"\u003etrue\u003c\/span\u003e measurement of heatwork is from a Large or Self-supporting cone placed on the shelf next to the ware.\u003cbr\u003e\u003cbr\u003eCONE NUMBERS - Orton makes cones from cone 022 up to cone 42. Cone 022 is the lowest melting cone and requires the least amount of heat to deform or bend. During firing, a cone softens and melts as it is heated. Cones used on the kiln shelf bend due to the effects of gravity pulling the tip down. This bending indicates the cone and the ware have received a specific amount of heat. It typically takes 15 to 22 minutes for cones to bend fully once they start bending. Each higher cone number requires more heat to bend. A cone 01 needs less heat treatment than cone 1 and cone 020 needs less than 019. \u003cbr\u003eIt is important not to confuse the lower maturing cones and bars, whose numbers begin with an 0, with the higher cones and bars not containing this prefix. \u003cbr\u003eAlthough cones do not actually measure temperature, cone bending behavior and temperature are related. Generally, the faster the firing, the higher the temperature required to bend the cone and the slower the firing, the lower the temperature required to bend the cone. The 6 o'clock position (90 angular degrees) is considered the end point of cone bending. \u003cbr\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45078483304770,"sku":"OSS8","price":17.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/OSS8.jpg?v=1730302454"},{"product_id":"evenheat-orton-ventmaster-kiln-vent-evevent120","title":"Evenheat Orton VentMaster Downdraft Kiln Venting System 120V","description":"\u003ch2 class=\"abz-seo-product\"\u003eEvenheat Orton VentMaster Downdraft Kiln Venting System 120V\u003c\/h2\u003e\n\u003cp\u003eOrton VentMaster® Kiln Venting Systems from Edward Orton Jr. Ceramic Foundation \u003cspan style=\"font-size: 12pt;\" data-mce-style=\"font-size: 12pt;\"\u003e\u003cimg align=\"right\" alt=\"Orton VentMaster Downdraft Kiln Venting System 110V\" border=\"0\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/ventmaster-wall_62335d3a-44be-4233-a8f8-246b49b2e0c5.jpg?v=1684312596\" style=\"float: right; margin: 0px 0px 10px 10px;\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/ventmaster-wall_62335d3a-44be-4233-a8f8-246b49b2e0c5.jpg?v=1684312596\" data-mce-style=\"float: right; margin: 0px 0px 10px 10px;\"\u003eH\u003c\/span\u003eere you can order a Orton VentMaster® (with downdraft ventilation) from Sheffield Pottery Ceramic Supplies.\u003c\/p\u003e\n\u003cp\u003eThe Orton VentMaster® is available in 110 and 220 volts which move 73 Cubic Feet per Minute: Normal room conditions will replenish air, no need for makeup air system. \u003cbr\u003e It weighs 10 Lbs.\u003cbr\u003e It comes with 4 foot high temperature hose. \u003cbr\u003e Available VentMaster Extender Kit extends length an additional four feet (recommended 25 foot maximum).\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 12pt;\" data-mce-style=\"font-size: 12pt;\"\u003eVentMaster:\u003c\/span\u003e Your Orton Vent Master System kit includes:\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFan assembly (Blower Housing Package) with 6 ft power cord\u003c\/li\u003e\n\u003cli\u003eCollector cup with adjustable height foot\u003c\/li\u003e\n\u003cli\u003eHigh temperature gasket to seal collector cup to bottom or side\u003c\/li\u003e\n\u003cli\u003eof kiln\u003c\/li\u003e\n\u003cli\u003e4 foot length of 2” diameter high temperature black flex hose\u003c\/li\u003e\n\u003cli\u003eTwo-2” hose clamps\u003c\/li\u003e\n\u003cli\u003eOne-¼” drill bit\u003c\/li\u003e\n\u003cli\u003eOne-3” stud\u003c\/li\u003e\n\u003cli\u003eOrton sample test cones\u003c\/li\u003e\n\u003cli\u003eCones and Firing booklet\u003c\/li\u003e\n\u003cli\u003eKiln Safety booklet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eVentMaster Motor can be kept on the floor or mounted to the wall. If placement under kiln is obstructed, the collector cup can also be attached to the side of the kiln. \u003cbr\u003e\u003c\/p\u003e\n\u003cp align=\"center\"\u003e\u003cspan style=\"font-weight: bold; color: #800000;\" data-mce-style=\"font-weight: bold; color: #800000;\"\u003eThe optional Expansion Kit should be purchased to vent:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp align=\"center\"\u003e\u003cspan style=\"font-weight: bold; color: #800000;\" data-mce-style=\"font-weight: bold; color: #800000;\"\u003e - 2 Kilns with combined volume not exceeding 20 cu ft\u003c\/span\u003e\u003c\/p\u003e\n\u003cp align=\"center\"\u003e\u003cspan style=\"font-weight: bold; color: #800000;\" data-mce-style=\"font-weight: bold; color: #800000;\"\u003e -Oval Kilns exceeding 12 cu ft but not exceeding 20 cu ft\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eItems you will need to install your new Vent Master:\u003cbr\u003e . a screwdriver, an electric drill (if your kiln has a steel plate on the bottom)\u003cbr\u003e. a vacuum cleaner. duct tape (optional)\u003cbr\u003e. a dryer vent kit – (containing flexible aluminum hose and 4” hose clamp) available from hardware and home center stores\u003cbr\u003e(Note: When selecting the dryer vent kit, be sure the vent flap is lightweight enough to be blown open easily and the vent pipe is long enough to go through your outside wall).\u003cbr\u003eYou have the option to install the Vent Master as a positive or negative pressure system, meaning that you can install the Vent Master to push the vent exhaust (positive pressure) out of the room or you can install the Vent Master to pull the vent exhaust (negative pressure) out of the room.\u003cbr\u003eFor a Positive Pressure System : Dryer Vent Kit w\/sufficient length of 4” aluminum, dryer vent duct to exhaust through outside wall.\u003cbr\u003eFor a Negative Pressure System : Sufficient length of high temperature 2” vacuum hose to allow blower assembly to be mounted adjacent to exhaust opening in wall.\u003c\/p\u003e\n\u003cp\u003eOrton VentMaster® (with downdraft ventilation)\u003c\/p\u003e\n\u003cp\u003eWith Downdraft Venting, the kiln is kept under a slight negative pressure. Gases are pulled out of the kiln near the bottom, mixed with fresh room air and exhausted to the outside through a duct. Improved air flow in the kiln results in more uniform temperatures, reducing hot and cold spots. \u003cbr\u003e Kilns cool faster when properly vented. In some cases, the kiln can cool down up to four hours faster, meaning you can empty and refill the kiln in less time. \u003cbr\u003e Downdraft venting can also extend the life of the metallic parts of your kiln by removing corrosive fumes. This means longer kiln life and reduced repair costs.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eSo Why Vent Your Kiln?\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFume Removal Improves Firings\u003c\/li\u003e\n\u003cli\u003eExtend the Life of Kiln Elements \u003c\/li\u003e\n\u003cli\u003eCool Your Kiln Faster\u003c\/li\u003e\n\u003cli\u003eImprove Temperature Uniformity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan style=\"font-weight: bold;\" data-mce-style=\"font-weight: bold;\"\u003e\u003cimg align=\"right\" alt=\"Orton VentMaster Downdraft Kiln Venting System 110V\" border=\"0\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/ventmaster-floor.jpg?v=1684312612\" style=\"float: right; margin: 0px 0px 10px 10px;\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/ventmaster-floor.jpg?v=1684312612\" data-mce-style=\"float: right; margin: 0px 0px 10px 10px;\"\u003eWhy VentMaster?\u003c\/span\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003eUniversal Unit (Fits all kilns)\u003c\/li\u003e\n\u003cli\u003eLightweight, Easy to Install or Move\u003c\/li\u003e\n\u003cli\u003eNo Vibration Transfered From Motor to Kiln.\u003c\/li\u003e\n\u003cli\u003eMountable on Wall or Floor (no kit required)\u003c\/li\u003e\n\u003cli\u003eVent Two Kilns Simultaneously*with Expansion Kit.\u003c\/li\u003e\n\u003cli\u003eNon-Corrosive Blower Housing\u003c\/li\u003e\n\u003cli\u003eNo need for Makeup Air System\u003c\/li\u003e\n\u003cli\u003eETL \/ CE Certified\u003c\/li\u003e\n\u003cli\u003eUL Listed Motor\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113304285506,"sku":"EVEVENT120","price":688.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/NOTFORINDIVIDUALSALE_6281b87a-7230-46e8-a523-b069478e4f77.jpg?v=1762878701"},{"product_id":"orton-pyrometric-bars-for-kiln-sitters-ob01","title":"Orton Bars - 01","description":"\u003cp\u003e\u003cb\u003eORTON BARS - 01 : Box of 50\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003ePyrometric Bars\u003c\/h2\u003e\n\u003cp\u003eSmall cones and Pyrometric bars are used in the Kiln-Sitter®, a mechanical switch that cuts off power in electric kilns. Small cones are occasionally used as witness cones, but caution is recommended, since these shorter cones require slightly higher temperatures to bend, as compared with Large or Self-supporting cones.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_bars.jpg?v=1684308428\" style=\"float: left; width: 214px; margin: 0px 0px 10px 10px;\"\u003ePyrometric Bars are 1 inch (2.54 cm) Long. The uniform shape allows for more consistent control when used in Kiln-Sitter.\u003c\/p\u003e\n\u003cp\u003eTemperature Equivalents use the same numbering system as small cones.\u003c\/p\u003e\n\u003cp\u003eView Temperature Equivalents in either \u003ca data-mce-href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" title=\"Orton Cones chart\"\u003eDegrees C or Degrees F chart\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eUnder most conditions, the small cone or bar used in the kiln shut-off device will need to be one number higher than the shelf cone or witness cone. For example, to achieve a cone 04 witness cone in the kiln a small 03 cone is generally used in the shut off device.\u003c\/b\u003e\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113604669762,"sku":"OB01","price":18.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/Orton-Pyrometric-Bars.jpg?v=1729085051"},{"product_id":"orton-pyrometric-bars-for-kiln-sitters-ob010","title":"Orton Bars - 010","description":"\u003cp\u003e\u003cb\u003eORTON BARS - 010 : Box of 50\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003ePyrometric Bars\u003c\/h2\u003e\n\u003cp\u003eSmall cones and Pyrometric bars are used in the Kiln-Sitter®, a mechanical switch that cuts off power in electric kilns. Small cones are occasionally used as witness cones, but caution is recommended, since these shorter cones require slightly higher temperatures to bend, as compared with Large or Self-supporting cones.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_bars.jpg?v=1684308428\" style=\"float: left; width: 214px; margin: 0px 0px 10px 10px;\"\u003ePyrometric Bars are 1 inch (2.54 cm) Long. The uniform shape allows for more consistent control when used in Kiln-Sitter.\u003c\/p\u003e\n\u003cp\u003eTemperature Equivalents use the same numbering system as small cones.\u003c\/p\u003e\n\u003cp\u003eView Temperature Equivalents in either \u003ca data-mce-href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" title=\"Orton Cones chart\"\u003eDegrees C or Degrees F chart\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eUnder most conditions, the small cone or bar used in the kiln shut-off device will need to be one number higher than the shelf cone or witness cone. For example, to achieve a cone 04 witness cone in the kiln a small 03 cone is generally used in the shut off device.\u003c\/b\u003e\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113604866370,"sku":"OB010","price":18.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/Orton-Pyrometric-Bars.jpg?v=1729085051"},{"product_id":"orton-pyrometric-bars-for-kiln-sitters-ob011","title":"Orton Bars - 011","description":"\u003cp\u003e\u003cb\u003eORTON BARS - 011 : Box of 50\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003ePyrometric Bars\u003c\/h2\u003e\n\u003cp\u003eSmall cones and Pyrometric bars are used in the Kiln-Sitter®, a mechanical switch that cuts off power in electric kilns. Small cones are occasionally used as witness cones, but caution is recommended, since these shorter cones require slightly higher temperatures to bend, as compared with Large or Self-supporting cones.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_bars.jpg?v=1684308428\" style=\"float: left; width: 214px; margin: 0px 0px 10px 10px;\"\u003ePyrometric Bars are 1 inch (2.54 cm) Long. The uniform shape allows for more consistent control when used in Kiln-Sitter.\u003c\/p\u003e\n\u003cp\u003eTemperature Equivalents use the same numbering system as small cones.\u003c\/p\u003e\n\u003cp\u003eView Temperature Equivalents in either \u003ca data-mce-href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" title=\"Orton Cones chart\"\u003eDegrees C or Degrees F chart\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eUnder most conditions, the small cone or bar used in the kiln shut-off device will need to be one number higher than the shelf cone or witness cone. For example, to achieve a cone 04 witness cone in the kiln a small 03 cone is generally used in the shut off device.\u003c\/b\u003e\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113605095746,"sku":"OB011","price":18.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/Orton-Pyrometric-Bars.jpg?v=1729085051"},{"product_id":"orton-pyrometric-bars-for-kiln-sitters-ob012","title":"Orton Bars - 012","description":"\u003cp\u003e\u003cb\u003eORTON BARS - 012 : Box of 50\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003ePyrometric Bars\u003c\/h2\u003e\n\u003cp\u003eSmall cones and Pyrometric bars are used in the Kiln-Sitter®, a mechanical switch that cuts off power in electric kilns. Small cones are occasionally used as witness cones, but caution is recommended, since these shorter cones require slightly higher temperatures to bend, as compared with Large or Self-supporting cones.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_bars.jpg?v=1684308428\" style=\"float: left; width: 214px; margin: 0px 0px 10px 10px;\"\u003ePyrometric Bars are 1 inch (2.54 cm) Long. The uniform shape allows for more consistent control when used in Kiln-Sitter.\u003c\/p\u003e\n\u003cp\u003eTemperature Equivalents use the same numbering system as small cones.\u003c\/p\u003e\n\u003cp\u003eView Temperature Equivalents in either \u003ca data-mce-href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" title=\"Orton Cones chart\"\u003eDegrees C or Degrees F chart\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eUnder most conditions, the small cone or bar used in the kiln shut-off device will need to be one number higher than the shelf cone or witness cone. For example, to achieve a cone 04 witness cone in the kiln a small 03 cone is generally used in the shut off device.\u003c\/b\u003e\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113605161282,"sku":"OB012","price":18.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/23047.jpg?v=1696272748"},{"product_id":"orton-pyrometric-bars-for-kiln-sitters-ob013","title":"Orton Bars - 013","description":"\u003cp\u003e\u003cb\u003eORTON BARS - 013 : Box of 50\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003ePyrometric Bars\u003c\/h2\u003e\n\u003cp\u003eSmall cones and Pyrometric bars are used in the Kiln-Sitter®, a mechanical switch that cuts off power in electric kilns. Small cones are occasionally used as witness cones, but caution is recommended, since these shorter cones require slightly higher temperatures to bend, as compared with Large or Self-supporting cones.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_bars.jpg?v=1684308428\" style=\"float: left; width: 214px; margin: 0px 0px 10px 10px;\"\u003ePyrometric Bars are 1 inch (2.54 cm) Long. The uniform shape allows for more consistent control when used in Kiln-Sitter.\u003c\/p\u003e\n\u003cp\u003eTemperature Equivalents use the same numbering system as small cones.\u003c\/p\u003e\n\u003cp\u003eView Temperature Equivalents in either \u003ca data-mce-href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" title=\"Orton Cones chart\"\u003eDegrees C or Degrees F chart\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eUnder most conditions, the small cone or bar used in the kiln shut-off device will need to be one number higher than the shelf cone or witness cone. For example, to achieve a cone 04 witness cone in the kiln a small 03 cone is generally used in the shut off device.\u003c\/b\u003e\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113605390658,"sku":"OB013","price":18.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/Orton-Pyrometric-Bars.jpg?v=1729085051"},{"product_id":"orton-pyrometric-bars-for-kiln-sitters-ob014","title":"Orton Bars - 014","description":"\u003cp\u003e\u003cb\u003eORTON BARS - 014 : Box of 50\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003ePyrometric Bars\u003c\/h2\u003e\n\u003cp\u003eSmall cones and Pyrometric bars are used in the Kiln-Sitter®, a mechanical switch that cuts off power in electric kilns. Small cones are occasionally used as witness cones, but caution is recommended, since these shorter cones require slightly higher temperatures to bend, as compared with Large or Self-supporting cones.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_bars.jpg?v=1684308428\" style=\"float: left; width: 214px; margin: 0px 0px 10px 10px;\"\u003ePyrometric Bars are 1 inch (2.54 cm) Long. The uniform shape allows for more consistent control when used in Kiln-Sitter.\u003c\/p\u003e\n\u003cp\u003eTemperature Equivalents use the same numbering system as small cones.\u003c\/p\u003e\n\u003cp\u003eView Temperature Equivalents in either \u003ca data-mce-href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" title=\"Orton Cones chart\"\u003eDegrees C or Degrees F chart\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eUnder most conditions, the small cone or bar used in the kiln shut-off device will need to be one number higher than the shelf cone or witness cone. For example, to achieve a cone 04 witness cone in the kiln a small 03 cone is generally used in the shut off device.\u003c\/b\u003e\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113605456194,"sku":"OB014","price":18.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/Orton-Pyrometric-Bars.jpg?v=1729085051"},{"product_id":"orton-pyrometric-bars-for-kiln-sitters-ob015","title":"Orton Bars - 015","description":"\u003cp\u003e\u003cb\u003eORTON BARS - 015 : Box of 50\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003ePyrometric Bars\u003c\/h2\u003e\n\u003cp\u003eSmall cones and Pyrometric bars are used in the Kiln-Sitter®, a mechanical switch that cuts off power in electric kilns. Small cones are occasionally used as witness cones, but caution is recommended, since these shorter cones require slightly higher temperatures to bend, as compared with Large or Self-supporting cones.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_bars.jpg?v=1684308428\" style=\"float: left; width: 214px; margin: 0px 0px 10px 10px;\"\u003ePyrometric Bars are 1 inch (2.54 cm) Long. The uniform shape allows for more consistent control when used in Kiln-Sitter.\u003c\/p\u003e\n\u003cp\u003eTemperature Equivalents use the same numbering system as small cones.\u003c\/p\u003e\n\u003cp\u003eView Temperature Equivalents in either \u003ca data-mce-href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" title=\"Orton Cones chart\"\u003eDegrees C or Degrees F chart\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eUnder most conditions, the small cone or bar used in the kiln shut-off device will need to be one number higher than the shelf cone or witness cone. For example, to achieve a cone 04 witness cone in the kiln a small 03 cone is generally used in the shut off device.\u003c\/b\u003e\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113605587266,"sku":"OB015","price":18.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/Orton-Pyrometric-Bars.jpg?v=1729085051"},{"product_id":"orton-pyrometric-bars-for-kiln-sitters-ob016","title":"Orton Bars - 016","description":"\u003cp\u003e\u003cb\u003eORTON BARS - 016 : Box of 50\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003ePyrometric Bars\u003c\/h2\u003e\n\u003cp\u003eSmall cones and Pyrometric bars are used in the Kiln-Sitter®, a mechanical switch that cuts off power in electric kilns. Small cones are occasionally used as witness cones, but caution is recommended, since these shorter cones require slightly higher temperatures to bend, as compared with Large or Self-supporting cones.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_bars.jpg?v=1684308428\" style=\"float: left; width: 214px; margin: 0px 0px 10px 10px;\"\u003ePyrometric Bars are 1 inch (2.54 cm) Long. The uniform shape allows for more consistent control when used in Kiln-Sitter.\u003c\/p\u003e\n\u003cp\u003eTemperature Equivalents use the same numbering system as small cones.\u003c\/p\u003e\n\u003cp\u003eView Temperature Equivalents in either \u003ca data-mce-href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" title=\"Orton Cones chart\"\u003eDegrees C or Degrees F chart\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eUnder most conditions, the small cone or bar used in the kiln shut-off device will need to be one number higher than the shelf cone or witness cone. For example, to achieve a cone 04 witness cone in the kiln a small 03 cone is generally used in the shut off device.\u003c\/b\u003e\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113605652802,"sku":"OB016","price":18.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/Orton-Pyrometric-Bars.jpg?v=1729085051"},{"product_id":"orton-pyrometric-bars-for-kiln-sitters-ob017","title":"Orton Bars - 017","description":"\u003cp\u003e\u003cb\u003eORTON BARS - 017 : Box of 50\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003ePyrometric Bars\u003c\/h2\u003e\n\u003cp\u003eSmall cones and Pyrometric bars are used in the Kiln-Sitter®, a mechanical switch that cuts off power in electric kilns. Small cones are occasionally used as witness cones, but caution is recommended, since these shorter cones require slightly higher temperatures to bend, as compared with Large or Self-supporting cones.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_bars.jpg?v=1684308428\" style=\"float: left; width: 214px; margin: 0px 0px 10px 10px;\"\u003ePyrometric Bars are 1 inch (2.54 cm) Long. The uniform shape allows for more consistent control when used in Kiln-Sitter.\u003c\/p\u003e\n\u003cp\u003eTemperature Equivalents use the same numbering system as small cones.\u003c\/p\u003e\n\u003cp\u003eView Temperature Equivalents in either \u003ca data-mce-href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" title=\"Orton Cones chart\"\u003eDegrees C or Degrees F chart\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eUnder most conditions, the small cone or bar used in the kiln shut-off device will need to be one number higher than the shelf cone or witness cone. For example, to achieve a cone 04 witness cone in the kiln a small 03 cone is generally used in the shut off device.\u003c\/b\u003e\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113605849410,"sku":"OB017","price":18.98,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/Orton-Pyrometric-Bars.jpg?v=1729085051"},{"product_id":"orton-pyrometric-bars-for-kiln-sitters-ob018","title":"Orton Bars - 018","description":"\u003cp\u003e\u003cb\u003eORTON BARS - 018 : Box of 50\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003ePyrometric Bars\u003c\/h2\u003e\n\u003cp\u003eSmall cones and Pyrometric bars are used in the Kiln-Sitter®, a mechanical switch that cuts off power in electric kilns. Small cones are occasionally used as witness cones, but caution is recommended, since these shorter cones require slightly higher temperatures to bend, as compared with Large or Self-supporting cones.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_bars.jpg?v=1684308428\" style=\"float: left; width: 214px; margin: 0px 0px 10px 10px;\"\u003ePyrometric Bars are 1 inch (2.54 cm) Long. The uniform shape allows for more consistent control when used in Kiln-Sitter.\u003c\/p\u003e\n\u003cp\u003eTemperature Equivalents use the same numbering system as small cones.\u003c\/p\u003e\n\u003cp\u003eView Temperature Equivalents in either \u003ca data-mce-href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" title=\"Orton Cones chart\"\u003eDegrees C or Degrees F chart\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eUnder most conditions, the small cone or bar used in the kiln shut-off device will need to be one number higher than the shelf cone or witness cone. For example, to achieve a cone 04 witness cone in the kiln a small 03 cone is generally used in the shut off device.\u003c\/b\u003e\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113605914946,"sku":"OB018","price":18.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/Orton-Pyrometric-Bars.jpg?v=1729085051"},{"product_id":"orton-pyrometric-bars-for-kiln-sitters-ob019","title":"Orton Bars - 019","description":"\u003cp\u003e\u003cb\u003eORTON BARS - 019 : Box of 50\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003ePyrometric Bars\u003c\/h2\u003e\n\u003cp\u003eSmall cones and Pyrometric bars are used in the Kiln-Sitter®, a mechanical switch that cuts off power in electric kilns. Small cones are occasionally used as witness cones, but caution is recommended, since these shorter cones require slightly higher temperatures to bend, as compared with Large or Self-supporting cones.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_bars.jpg?v=1684308428\" style=\"float: left; width: 214px; margin: 0px 0px 10px 10px;\"\u003ePyrometric Bars are 1 inch (2.54 cm) Long. The uniform shape allows for more consistent control when used in Kiln-Sitter.\u003c\/p\u003e\n\u003cp\u003eTemperature Equivalents use the same numbering system as small cones.\u003c\/p\u003e\n\u003cp\u003eView Temperature Equivalents in either \u003ca data-mce-href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" title=\"Orton Cones chart\"\u003eDegrees C or Degrees F chart\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eUnder most conditions, the small cone or bar used in the kiln shut-off device will need to be one number higher than the shelf cone or witness cone. For example, to achieve a cone 04 witness cone in the kiln a small 03 cone is generally used in the shut off device.\u003c\/b\u003e\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113605980482,"sku":"OB019","price":18.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/Orton-Pyrometric-Bars.jpg?v=1729085051"},{"product_id":"orton-pyrometric-bars-for-kiln-sitters-ob02","title":"Orton Bars - 02","description":"\u003cp\u003e\u003cb\u003eORTON BARS - 02 : Box of 50\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003ePyrometric Bars\u003c\/h2\u003e\n\u003cp\u003eSmall cones and Pyrometric bars are used in the Kiln-Sitter®, a mechanical switch that cuts off power in electric kilns. Small cones are occasionally used as witness cones, but caution is recommended, since these shorter cones require slightly higher temperatures to bend, as compared with Large or Self-supporting cones.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_bars.jpg?v=1684308428\" style=\"float: left; width: 214px; margin: 0px 0px 10px 10px;\"\u003ePyrometric Bars are 1 inch (2.54 cm) Long. The uniform shape allows for more consistent control when used in Kiln-Sitter.\u003c\/p\u003e\n\u003cp\u003eTemperature Equivalents use the same numbering system as small cones.\u003c\/p\u003e\n\u003cp\u003eView Temperature Equivalents in either \u003ca data-mce-href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" title=\"Orton Cones chart\"\u003eDegrees C or Degrees F chart\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eUnder most conditions, the small cone or bar used in the kiln shut-off device will need to be one number higher than the shelf cone or witness cone. For example, to achieve a cone 04 witness cone in the kiln a small 03 cone is generally used in the shut off device.\u003c\/b\u003e\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113606078786,"sku":"OB02","price":18.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/Orton-Pyrometric-Bars.jpg?v=1729085051"},{"product_id":"orton-pyrometric-bars-for-kiln-sitters-ob020","title":"Orton Bars - 020","description":"\u003cp\u003e\u003cb\u003eORTON BARS - 020 : Box of 50\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003ePyrometric Bars\u003c\/h2\u003e\n\u003cp\u003eSmall cones and Pyrometric bars are used in the Kiln-Sitter®, a mechanical switch that cuts off power in electric kilns. Small cones are occasionally used as witness cones, but caution is recommended, since these shorter cones require slightly higher temperatures to bend, as compared with Large or Self-supporting cones.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_bars.jpg?v=1684308428\" style=\"float: left; width: 214px; margin: 0px 0px 10px 10px;\"\u003ePyrometric Bars are 1 inch (2.54 cm) Long. The uniform shape allows for more consistent control when used in Kiln-Sitter.\u003c\/p\u003e\n\u003cp\u003eTemperature Equivalents use the same numbering system as small cones.\u003c\/p\u003e\n\u003cp\u003eView Temperature Equivalents in either \u003ca data-mce-href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" title=\"Orton Cones chart\"\u003eDegrees C or Degrees F chart\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eUnder most conditions, the small cone or bar used in the kiln shut-off device will need to be one number higher than the shelf cone or witness cone. For example, to achieve a cone 04 witness cone in the kiln a small 03 cone is generally used in the shut off device.\u003c\/b\u003e\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113606144322,"sku":"OB020","price":18.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/Orton-Pyrometric-Bars.jpg?v=1729085051"},{"product_id":"orton-pyrometric-bars-for-kiln-sitters-ob021","title":"Orton Bars - 021","description":"\u003cp\u003e\u003cb\u003eORTON BARS - 021 : Box of 50\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003ePyrometric Bars\u003c\/h2\u003e\n\u003cp\u003eSmall cones and Pyrometric bars are used in the Kiln-Sitter®, a mechanical switch that cuts off power in electric kilns. Small cones are occasionally used as witness cones, but caution is recommended, since these shorter cones require slightly higher temperatures to bend, as compared with Large or Self-supporting cones.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_bars.jpg?v=1684308428\" style=\"float: left; width: 214px; margin: 0px 0px 10px 10px;\"\u003ePyrometric Bars are 1 inch (2.54 cm) Long. The uniform shape allows for more consistent control when used in Kiln-Sitter.\u003c\/p\u003e\n\u003cp\u003eTemperature Equivalents use the same numbering system as small cones.\u003c\/p\u003e\n\u003cp\u003eView Temperature Equivalents in either \u003ca data-mce-href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" title=\"Orton Cones chart\"\u003eDegrees C or Degrees F chart\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eUnder most conditions, the small cone or bar used in the kiln shut-off device will need to be one number higher than the shelf cone or witness cone. For example, to achieve a cone 04 witness cone in the kiln a small 03 cone is generally used in the shut off device.\u003c\/b\u003e\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113606439234,"sku":"OB021","price":18.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/Orton-Pyrometric-Bars.jpg?v=1729085051"},{"product_id":"orton-pyrometric-bars-for-kiln-sitters-ob022","title":"Orton Bars - 022","description":"\u003cp\u003e\u003cb\u003eORTON BARS - 022 : Box of 50\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003ePyrometric Bars\u003c\/h2\u003e\n\u003cp\u003eSmall cones and Pyrometric bars are used in the Kiln-Sitter®, a mechanical switch that cuts off power in electric kilns. Small cones are occasionally used as witness cones, but caution is recommended, since these shorter cones require slightly higher temperatures to bend, as compared with Large or Self-supporting cones.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_bars.jpg?v=1684308428\" style=\"float: left; width: 214px; margin: 0px 0px 10px 10px;\"\u003ePyrometric Bars are 1 inch (2.54 cm) Long. The uniform shape allows for more consistent control when used in Kiln-Sitter.\u003c\/p\u003e\n\u003cp\u003eTemperature Equivalents use the same numbering system as small cones.\u003c\/p\u003e\n\u003cp\u003eView Temperature Equivalents in either \u003ca data-mce-href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" title=\"Orton Cones chart\"\u003eDegrees C or Degrees F chart\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eUnder most conditions, the small cone or bar used in the kiln shut-off device will need to be one number higher than the shelf cone or witness cone. For example, to achieve a cone 04 witness cone in the kiln a small 03 cone is generally used in the shut off device.\u003c\/b\u003e\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113606537538,"sku":"OB022","price":18.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/Orton-Pyrometric-Bars.jpg?v=1729085051"},{"product_id":"orton-pyrometric-bars-for-kiln-sitters-ob05","title":"Orton Bars - 05","description":"\u003cp\u003e\u003cb\u003eORTON BARS - 05 : Box of 50\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003ePyrometric Bars\u003c\/h2\u003e\n\u003cp\u003eSmall cones and Pyrometric bars are used in the Kiln-Sitter®, a mechanical switch that cuts off power in electric kilns. Small cones are occasionally used as witness cones, but caution is recommended, since these shorter cones require slightly higher temperatures to bend, as compared with Large or Self-supporting cones.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_bars.jpg?v=1684308428\" style=\"float: left; width: 214px; margin: 0px 0px 10px 10px;\"\u003ePyrometric Bars are 1 inch (2.54 cm) Long. The uniform shape allows for more consistent control when used in Kiln-Sitter.\u003c\/p\u003e\n\u003cp\u003eTemperature Equivalents use the same numbering system as small cones.\u003c\/p\u003e\n\u003cp\u003eView Temperature Equivalents in either \u003ca data-mce-href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" title=\"Orton Cones chart\"\u003eDegrees C or Degrees F chart\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eUnder most conditions, the small cone or bar used in the kiln shut-off device will need to be one number higher than the shelf cone or witness cone. For example, to achieve a cone 04 witness cone in the kiln a small 03 cone is generally used in the shut off device.\u003c\/b\u003e\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113606635842,"sku":"OB05","price":18.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/Orton-Pyrometric-Bars.jpg?v=1729085051"},{"product_id":"orton-pyrometric-bars-for-kiln-sitters-ob07","title":"Orton Bars - 07","description":"\u003cp\u003e\u003cstrong\u003eORTON BARS - 07 : Box of 50\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003ePyrometric Bars\u003c\/h2\u003e\n\u003cp\u003eSmall cones and Pyrometric bars are used in the Kiln-Sitter®, a mechanical switch that cuts off power in electric kilns. Small cones are occasionally used as witness cones, but caution is recommended, since these shorter cones require slightly higher temperatures to bend, as compared with Large or Self-supporting cones.\u003c\/p\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_bars.jpg?v=1684308428\" border=\"0\" alt=\"orton bars\" align=\"\"\u003e\u003cbr\u003e\n\u003cp\u003ePyrometric Bars are 1 inch (2.54 cm) Long. The uniform shape allows for more consistent control when used in Kiln-Sitter.\u003c\/p\u003e\n\u003cp\u003eTemperature Equivalents use the same numbering system as small cones.\u003c\/p\u003e\n\u003cp\u003eView Temperature Equivalents in either \u003ca title=\"Orton Cones chart\" href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\"\u003eDegrees C or Degrees F chart\u003c\/a\u003e.\u003c\/p\u003e\n\u003cb\u003eUnder most conditions, the small cone or bar used in the kiln shut-off device will need to be one number higher than the shelf cone or witness cone. For example, to achieve a cone 04 witness cone in the kiln a small 03 cone is generally used in the shut off device.\u003c\/b\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113606832450,"sku":"OB07","price":18.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/23050.jpg?v=1696273639"},{"product_id":"orton-pyrometric-bars-for-kiln-sitters-ob08","title":"Orton Bars - 08","description":"\u003cp\u003e\u003cb\u003eORTON BARS - 08 : Box of 50\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003ePyrometric Bars\u003c\/h2\u003e\n\u003cp\u003eSmall cones and Pyrometric bars are used in the Kiln-Sitter®, a mechanical switch that cuts off power in electric kilns. Small cones are occasionally used as witness cones, but caution is recommended, since these shorter cones require slightly higher temperatures to bend, as compared with Large or Self-supporting cones.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_bars.jpg?v=1684308428\" style=\"float: left; width: 214px; margin: 0px 0px 10px 10px;\"\u003ePyrometric Bars are 1 inch (2.54 cm) Long. The uniform shape allows for more consistent control when used in Kiln-Sitter.\u003c\/p\u003e\n\u003cp\u003eTemperature Equivalents use the same numbering system as small cones.\u003c\/p\u003e\n\u003cp\u003eView Temperature Equivalents in either \u003ca data-mce-href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" title=\"Orton Cones chart\"\u003eDegrees C or Degrees F chart\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eUnder most conditions, the small cone or bar used in the kiln shut-off device will need to be one number higher than the shelf cone or witness cone. For example, to achieve a cone 04 witness cone in the kiln a small 03 cone is generally used in the shut off device.\u003c\/b\u003e\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113607127362,"sku":"OB08","price":18.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/Orton-Pyrometric-Bars.jpg?v=1729085051"},{"product_id":"orton-pyrometric-bars-for-kiln-sitters-ob09","title":"Orton Bars - 09","description":"\u003cp\u003e\u003cb\u003eORTON BARS - 09 : Box of 50\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003ePyrometric Bars\u003c\/h2\u003e\n\u003cp\u003eSmall cones and Pyrometric bars are used in the Kiln-Sitter®, a mechanical switch that cuts off power in electric kilns. Small cones are occasionally used as witness cones, but caution is recommended, since these shorter cones require slightly higher temperatures to bend, as compared with Large or Self-supporting cones.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_bars.jpg?v=1684308428\" style=\"float: left; width: 214px; margin: 0px 0px 10px 10px;\"\u003ePyrometric Bars are 1 inch (2.54 cm) Long. The uniform shape allows for more consistent control when used in Kiln-Sitter.\u003c\/p\u003e\n\u003cp\u003eTemperature Equivalents use the same numbering system as small cones.\u003c\/p\u003e\n\u003cp\u003eView Temperature Equivalents in either \u003ca data-mce-href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" title=\"Orton Cones chart\"\u003eDegrees C or Degrees F chart\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eUnder most conditions, the small cone or bar used in the kiln shut-off device will need to be one number higher than the shelf cone or witness cone. For example, to achieve a cone 04 witness cone in the kiln a small 03 cone is generally used in the shut off device.\u003c\/b\u003e\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113607225666,"sku":"OB09","price":18.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/23049.jpg?v=1696273754"},{"product_id":"orton-pyrometric-bars-for-kiln-sitters-ob10","title":"Orton Bars - 10","description":"\u003cp\u003e\u003cb\u003eORTON BARS - 10 : Box of 50\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003ePyrometric Bars\u003c\/h2\u003e\n\u003cp\u003eSmall cones and Pyrometric bars are used in the Kiln-Sitter®, a mechanical switch that cuts off power in electric kilns. Small cones are occasionally used as witness cones, but caution is recommended, since these shorter cones require slightly higher temperatures to bend, as compared with Large or Self-supporting cones.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_bars.jpg?v=1684308428\" style=\"float: left; width: 214px; margin: 0px 0px 10px 10px;\"\u003ePyrometric Bars are 1 inch (2.54 cm) Long. The uniform shape allows for more consistent control when used in Kiln-Sitter.\u003c\/p\u003e\n\u003cp\u003eTemperature Equivalents use the same numbering system as small cones.\u003c\/p\u003e\n\u003cp\u003eView Temperature Equivalents in either \u003ca data-mce-href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" title=\"Orton Cones chart\"\u003eDegrees C or Degrees F chart\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eUnder most conditions, the small cone or bar used in the kiln shut-off device will need to be one number higher than the shelf cone or witness cone. For example, to achieve a cone 04 witness cone in the kiln a small 03 cone is generally used in the shut off device.\u003c\/b\u003e\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113607323970,"sku":"OB10","price":18.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/Orton-Pyrometric-Bars.jpg?v=1729085051"},{"product_id":"orton-pyrometric-bars-for-kiln-sitters-ob2","title":"Orton Bars - 2","description":"\u003cp\u003e\u003cb\u003eORTON BARS - 2 : Box of 50\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003ePyrometric Bars\u003c\/h2\u003e\n\u003cp\u003eSmall cones and Pyrometric bars are used in the Kiln-Sitter®, a mechanical switch that cuts off power in electric kilns. Small cones are occasionally used as witness cones, but caution is recommended, since these shorter cones require slightly higher temperatures to bend, as compared with Large or Self-supporting cones.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_bars.jpg?v=1684308428\" style=\"float: left; width: 214px; margin: 0px 0px 10px 10px;\"\u003ePyrometric Bars are 1 inch (2.54 cm) Long. The uniform shape allows for more consistent control when used in Kiln-Sitter.\u003c\/p\u003e\n\u003cp\u003eTemperature Equivalents use the same numbering system as small cones.\u003c\/p\u003e\n\u003cp\u003eView Temperature Equivalents in either \u003ca data-mce-href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" title=\"Orton Cones chart\"\u003eDegrees C or Degrees F chart\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eUnder most conditions, the small cone or bar used in the kiln shut-off device will need to be one number higher than the shelf cone or witness cone. For example, to achieve a cone 04 witness cone in the kiln a small 03 cone is generally used in the shut off device.\u003c\/b\u003e\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113607389506,"sku":"OB2","price":18.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/Orton-Pyrometric-Bars.jpg?v=1729085051"},{"product_id":"orton-pyrometric-bars-for-kiln-sitters-ob3","title":"Orton Bars - 3","description":"\u003cp\u003e\u003cb\u003eORTON BARS - 3 : Box of 50\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003ePyrometric Bars\u003c\/h2\u003e\n\u003cp\u003eSmall cones and Pyrometric bars are used in the Kiln-Sitter®, a mechanical switch that cuts off power in electric kilns. Small cones are occasionally used as witness cones, but caution is recommended, since these shorter cones require slightly higher temperatures to bend, as compared with Large or Self-supporting cones.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_bars.jpg?v=1684308428\" style=\"float: left; width: 214px; margin: 0px 0px 10px 10px;\"\u003ePyrometric Bars are 1 inch (2.54 cm) Long. The uniform shape allows for more consistent control when used in Kiln-Sitter.\u003c\/p\u003e\n\u003cp\u003eTemperature Equivalents use the same numbering system as small cones.\u003c\/p\u003e\n\u003cp\u003eView Temperature Equivalents in either \u003ca data-mce-href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" title=\"Orton Cones chart\"\u003eDegrees C or Degrees F chart\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eUnder most conditions, the small cone or bar used in the kiln shut-off device will need to be one number higher than the shelf cone or witness cone. For example, to achieve a cone 04 witness cone in the kiln a small 03 cone is generally used in the shut off device.\u003c\/b\u003e\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113610109250,"sku":"OB3","price":18.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/Orton-Pyrometric-Bars.jpg?v=1729085051"},{"product_id":"orton-pyrometric-bars-for-kiln-sitters-ob4","title":"Orton Bars - 4","description":"\u003cp\u003e\u003cb\u003eORTON BARS - 4 : Box of 50\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003ePyrometric Bars\u003c\/h2\u003e\n\u003cp\u003eSmall cones and Pyrometric bars are used in the Kiln-Sitter®, a mechanical switch that cuts off power in electric kilns. Small cones are occasionally used as witness cones, but caution is recommended, since these shorter cones require slightly higher temperatures to bend, as compared with Large or Self-supporting cones.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_bars.jpg?v=1684308428\" style=\"float: left; width: 214px; margin: 0px 0px 10px 10px;\"\u003ePyrometric Bars are 1 inch (2.54 cm) Long. The uniform shape allows for more consistent control when used in Kiln-Sitter.\u003c\/p\u003e\n\u003cp\u003eTemperature Equivalents use the same numbering system as small cones.\u003c\/p\u003e\n\u003cp\u003eView Temperature Equivalents in either \u003ca data-mce-href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" title=\"Orton Cones chart\"\u003eDegrees C or Degrees F chart\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eUnder most conditions, the small cone or bar used in the kiln shut-off device will need to be one number higher than the shelf cone or witness cone. For example, to achieve a cone 04 witness cone in the kiln a small 03 cone is generally used in the shut off device.\u003c\/b\u003e\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113610174786,"sku":"OB4","price":18.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/Orton-Pyrometric-Bars.jpg?v=1729085051"},{"product_id":"orton-pyrometric-bars-for-kiln-sitters-ob5","title":"Orton Bars - 5","description":"\u003cp\u003e\u003cb\u003eORTON BARS - 5 : Box of 50\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003ePyrometric Bars\u003c\/h2\u003e\n\u003cp\u003eSmall cones and Pyrometric bars are used in the Kiln-Sitter®, a mechanical switch that cuts off power in electric kilns. Small cones are occasionally used as witness cones, but caution is recommended, since these shorter cones require slightly higher temperatures to bend, as compared with Large or Self-supporting cones.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_bars.jpg?v=1684308428\" style=\"float: left; width: 214px; margin: 0px 0px 10px 10px;\"\u003ePyrometric Bars are 1 inch (2.54 cm) Long. The uniform shape allows for more consistent control when used in Kiln-Sitter.\u003c\/p\u003e\n\u003cp\u003eTemperature Equivalents use the same numbering system as small cones.\u003c\/p\u003e\n\u003cp\u003eView Temperature Equivalents in either \u003ca data-mce-href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" title=\"Orton Cones chart\"\u003eDegrees C or Degrees F chart\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eUnder most conditions, the small cone or bar used in the kiln shut-off device will need to be one number higher than the shelf cone or witness cone. For example, to achieve a cone 04 witness cone in the kiln a small 03 cone is generally used in the shut off device.\u003c\/b\u003e\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113610436930,"sku":"OB5","price":18.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/Orton-Pyrometric-Bars.jpg?v=1729085051"},{"product_id":"orton-pyrometric-bars-for-kiln-sitters-ob7","title":"Orton Bars - 7","description":"\u003cspan\u003e\u003c\/span\u003e\u003cstrong\u003eORTON BARS - 7 : Box of 50\u003c\/strong\u003e\u003cbr\u003e\n\u003ch2 class=\"abz-seo-product\"\u003ePyrometric Bars\u003c\/h2\u003e\n\u003cp\u003eSmall cones and Pyrometric bars are used in the Kiln-Sitter®, a mechanical switch that cuts off power in electric kilns. Small cones are occasionally used as witness cones, but caution is recommended, since these shorter cones require slightly higher temperatures to bend, as compared with Large or Self-supporting cones.\u003c\/p\u003e\n\u003cp\u003e\u003cimg align=\"\" alt=\"orton bars\" border=\"0\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_bars.jpg?v=1684308428\"\u003e\u003c\/p\u003e\n\u003cp\u003ePyrometric Bars are 1 inch (2.54 cm) Long. The uniform shape allows for more consistent control when used in Kiln-Sitter.\u003c\/p\u003e\n\u003cp\u003eTemperature Equivalents use the same numbering system as small cones.\u003c\/p\u003e\n\u003cp\u003eView Temperature Equivalents in either \u003ca href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" title=\"Orton Cones chart\"\u003eDegrees C or Degrees F chart\u003c\/a\u003e.\u003c\/p\u003e\n\u003cb\u003eUnder most conditions, the small cone or bar used in the kiln shut-off device will need to be one number higher than the shelf cone or witness cone. For example, to achieve a cone 04 witness cone in the kiln a small 03 cone is generally used in the shut off device.\u003c\/b\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113610535234,"sku":"OB7","price":18.98,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/Orton-Pyrometric-Bars.jpg?v=1729085051"},{"product_id":"orton-pyrometric-bars-for-kiln-sitters-ob8","title":"Orton Bars - 8","description":"\u003cp\u003e\u003cb\u003eORTON BARS - 8 : Box of 50\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003ePyrometric Bars\u003c\/h2\u003e\n\u003cp\u003eSmall cones and Pyrometric bars are used in the Kiln-Sitter®, a mechanical switch that cuts off power in electric kilns. Small cones are occasionally used as witness cones, but caution is recommended, since these shorter cones require slightly higher temperatures to bend, as compared with Large or Self-supporting cones.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_bars.jpg?v=1684308428\" style=\"float: left; width: 214px; margin: 0px 0px 10px 10px;\"\u003ePyrometric Bars are 1 inch (2.54 cm) Long. The uniform shape allows for more consistent control when used in Kiln-Sitter.\u003c\/p\u003e\n\u003cp\u003eTemperature Equivalents use the same numbering system as small cones.\u003c\/p\u003e\n\u003cp\u003eView Temperature Equivalents in either \u003ca data-mce-href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" title=\"Orton Cones chart\"\u003eDegrees C or Degrees F chart\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eUnder most conditions, the small cone or bar used in the kiln shut-off device will need to be one number higher than the shelf cone or witness cone. For example, to achieve a cone 04 witness cone in the kiln a small 03 cone is generally used in the shut off device.\u003c\/b\u003e\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113612009794,"sku":"OB8","price":18.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/Orton-Pyrometric-Bars.jpg?v=1729085051"},{"product_id":"orton-pyrometric-bars-for-kiln-sitters-ob9","title":"Orton Bars - 9","description":"\u003cp\u003e\u003cb\u003eORTON BARS - 9 : Box of 50\u003c\/b\u003e\u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003ePyrometric Bars\u003c\/h2\u003e\n\u003cp\u003eSmall cones and Pyrometric bars are used in the Kiln-Sitter®, a mechanical switch that cuts off power in electric kilns. Small cones are occasionally used as witness cones, but caution is recommended, since these shorter cones require slightly higher temperatures to bend, as compared with Large or Self-supporting cones.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_bars.jpg?v=1684308428\" style=\"float: left; width: 214px; margin: 0px 0px 10px 10px;\"\u003ePyrometric Bars are 1 inch (2.54 cm) Long. The uniform shape allows for more consistent control when used in Kiln-Sitter.\u003c\/p\u003e\n\u003cp\u003eTemperature Equivalents use the same numbering system as small cones.\u003c\/p\u003e\n\u003cp\u003eView Temperature Equivalents in either \u003ca data-mce-href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" href=\"https:\/\/www.sheffield-pottery.live\/collections\/orton-cone-chart\" title=\"Orton Cones chart\"\u003eDegrees C or Degrees F chart\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eUnder most conditions, the small cone or bar used in the kiln shut-off device will need to be one number higher than the shelf cone or witness cone. For example, to achieve a cone 04 witness cone in the kiln a small 03 cone is generally used in the shut off device.\u003c\/b\u003e\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113612108098,"sku":"OB9","price":18.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/Orton-Pyrometric-Bars.jpg?v=1729085051"},{"product_id":"orton-pyrometric-witness-cones-for-kiln-firing-ol01","title":"Orton Cones: Large Cones - 01","description":"\u003ch2\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eORTON LARGE CONES - 01 : Box of 50\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/h2\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eOrton cones, pyrometric cones or witness cones are for accurate kiln firing. Order online from Sheffield Pottery Ceramic Supply.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-mce-fragment=\"1\"\u003eOrton Pyrometric Cones for Ceramic Arts\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003ePyrometric cones measure heat-work (the effect of time and temperature).\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eOrton Pyrometric cones are slender pyramids made from about 100 carefully controlled compositions. Each cone number is unique in measuring temperature within a small temperature range (less than 30°C). Cones measure the amount of heat absorbed. As the cone nears its maturing range, it softens and the tip begins to bend, drawn down by the influence of gravity. \u003cspan data-mce-fragment=\"1\"\u003eOrton Cone Temperature Equivalencies\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg style=\"margin-bottom: 16px; float: none;\" alt=\"orton cone chart pdf\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_cone_wall_chart_horiz_f9550ca0-5d09-45fe-8fdb-47d522d85799.jpg?v=1685085521\"\u003e\u003c\/div\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/cone_wall_chart_horiz_e0886c71-f5ef-434a-a6ff-b895d325eb96.pdf?v=1684422308\" title=\"Orton Cones Wall Chart\"\u003eDownload and Print the Complete Orton Cone Wall Chart... Here.\u003c\/a\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eOrton manufactures four different types of cones (Small cones, Bar cones, Large cones and Self-supporting cones).\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe Large and Self-supporting cones are used to measure temperature uniformity and\/or if there was sufficient heatwork done to mature the ware. Cones indicate whether the ware received an adequate amount of heatwork to properly mature the clay or glaze. A properly fired cone will bend over with the tip of the cone almost touching the shelf. After firing a kiln, a simple glance at the cone can tell if the firing was sucessful.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe small and bar cones are mainly used in the kiln shut-off device called the Kilnsitter. This is a mechanical device that shuts off the kiln when the temperature inside is sufficient to cause the cone to deform under the weight of the Kilnsitter rod.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe only \u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003etrue\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003e measurement of heatwork is from a Large or Self-supporting cone placed on the shelf next to the ware.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eCONE NUMBERS - Orton makes cones from cone 022 up to cone 42. Cone 022 is the lowest melting cone and requires the least amount of heat to deform or bend. During firing, a cone softens and melts as it is heated. Cones used on the kiln shelf bend due to the effects of gravity pulling the tip down. This bending indicates the cone and the ware have received a specific amount of heat. It typically takes 15 to 22 minutes for cones to bend fully once they start bending. Each higher cone number requires more heat to bend. A cone 01 needs less heat treatment than cone 1 and cone 020 needs less than 019.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eIt is important not to confuse the lower maturing cones and bars, whose numbers begin with an 0, with the higher cones and bars not containing this prefix.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eAlthough cones do not actually measure temperature, cone bending behavior and temperature are related. Generally, the faster the firing, the higher the temperature required to bend the cone and the slower the firing, the lower the temperature required to bend the cone. The 6 o'clock position (90 angular degrees) is considered the end point of cone bending\u003c\/span\u003e\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113612239170,"sku":"OL01","price":22.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/products\/OL01-2.jpg?v=1683887288"},{"product_id":"orton-pyrometric-witness-cones-for-kiln-firing-ol010","title":"Orton Cones: Large Cones - 010","description":"\u003ch2\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eORTON LARGE CONES - 010 : Box of 50\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/h2\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eOrton cones, pyrometric cones or witness cones are for accurate kiln firing. Order online from Sheffield Pottery Ceramic Supply.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-mce-fragment=\"1\"\u003eOrton Pyrometric Cones for Ceramic Arts\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003ePyrometric cones measure heat-work (the effect of time and temperature).\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eOrton Pyrometric cones are slender pyramids made from about 100 carefully controlled compositions. Each cone number is unique in measuring temperature within a small temperature range (less than 30°C). Cones measure the amount of heat absorbed. As the cone nears its maturing range, it softens and the tip begins to bend, drawn down by the influence of gravity. \u003cspan data-mce-fragment=\"1\"\u003eOrton Cone Temperature Equivalencies\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_cone_wall_chart_horiz_f9550ca0-5d09-45fe-8fdb-47d522d85799.jpg?v=1685085521\" alt=\"orton cone chart pdf\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e\u003ca title=\"Orton Cones Wall Chart\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/cone_wall_chart_horiz_e0886c71-f5ef-434a-a6ff-b895d325eb96.pdf?v=1684422308\"\u003eDownload and Print the Complete Orton Cone Wall Chart... Here.\u003c\/a\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eOrton manufactures four different types of cones (Small cones, Bar cones, Large cones and Self-supporting cones).\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe Large and Self-supporting cones are used to measure temperature uniformity and\/or if there was sufficient heatwork done to mature the ware. Cones indicate whether the ware received an adequate amount of heatwork to properly mature the clay or glaze. A properly fired cone will bend over with the tip of the cone almost touching the shelf. After firing a kiln, a simple glance at the cone can tell if the firing was sucessful.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe small and bar cones are mainly used in the kiln shut-off device called the Kilnsitter. This is a mechanical device that shuts off the kiln when the temperature inside is sufficient to cause the cone to deform under the weight of the Kilnsitter rod.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe only \u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003etrue\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003e measurement of heatwork is from a Large or Self-supporting cone placed on the shelf next to the ware.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eCONE NUMBERS - Orton makes cones from cone 022 up to cone 42. Cone 022 is the lowest melting cone and requires the least amount of heat to deform or bend. During firing, a cone softens and melts as it is heated. Cones used on the kiln shelf bend due to the effects of gravity pulling the tip down. This bending indicates the cone and the ware have received a specific amount of heat. It typically takes 15 to 22 minutes for cones to bend fully once they start bending. Each higher cone number requires more heat to bend. A cone 01 needs less heat treatment than cone 1 and cone 020 needs less than 019.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eIt is important not to confuse the lower maturing cones and bars, whose numbers begin with an 0, with the higher cones and bars not containing this prefix.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eAlthough cones do not actually measure temperature, cone bending behavior and temperature are related. Generally, the faster the firing, the higher the temperature required to bend the cone and the slower the firing, the lower the temperature required to bend the cone. The 6 o'clock position (90 angular degrees) is considered the end point of cone bending\u003c\/span\u003e\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113612304706,"sku":"OL010","price":22.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/products\/OL010-2.jpg?v=1683887292"},{"product_id":"orton-pyrometric-witness-cones-for-kiln-firing-ol011","title":"Orton Cones: Large Cones - 011","description":"\u003ch2\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eORTON LARGE CONES - 011 : Box of 50 \u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/h2\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eOrton cones, pyrometric cones or witness cones are for accurate kiln firing. Order online from Sheffield Pottery Ceramic Supply.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-mce-fragment=\"1\"\u003eOrton Pyrometric Cones for Ceramic Arts\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003ePyrometric cones measure heat-work (the effect of time and temperature).\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eOrton Pyrometric cones are slender pyramids made from about 100 carefully controlled compositions. Each cone number is unique in measuring temperature within a small temperature range (less than 30°C). Cones measure the amount of heat absorbed. As the cone nears its maturing range, it softens and the tip begins to bend, drawn down by the influence of gravity. \u003cspan data-mce-fragment=\"1\"\u003eOrton Cone Temperature Equivalencies\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg style=\"margin-bottom: 16px; float: none;\" alt=\"orton cone chart pdf\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_cone_wall_chart_horiz_f9550ca0-5d09-45fe-8fdb-47d522d85799.jpg?v=1685085521\"\u003e\u003c\/div\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/cone_wall_chart_horiz_e0886c71-f5ef-434a-a6ff-b895d325eb96.pdf?v=1684422308\" title=\"Orton Cones Wall Chart\"\u003eDownload and Print the Complete Orton Cone Wall Chart... Here.\u003c\/a\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eOrton manufactures four different types of cones (Small cones, Bar cones, Large cones and Self-supporting cones).\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe Large and Self-supporting cones are used to measure temperature uniformity and\/or if there was sufficient heatwork done to mature the ware. Cones indicate whether the ware received an adequate amount of heatwork to properly mature the clay or glaze. A properly fired cone will bend over with the tip of the cone almost touching the shelf. After firing a kiln, a simple glance at the cone can tell if the firing was sucessful.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe small and bar cones are mainly used in the kiln shut-off device called the Kilnsitter. This is a mechanical device that shuts off the kiln when the temperature inside is sufficient to cause the cone to deform under the weight of the Kilnsitter rod.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe only \u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003etrue\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003e measurement of heatwork is from a Large or Self-supporting cone placed on the shelf next to the ware.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eCONE NUMBERS - Orton makes cones from cone 022 up to cone 42. Cone 022 is the lowest melting cone and requires the least amount of heat to deform or bend. During firing, a cone softens and melts as it is heated. Cones used on the kiln shelf bend due to the effects of gravity pulling the tip down. This bending indicates the cone and the ware have received a specific amount of heat. It typically takes 15 to 22 minutes for cones to bend fully once they start bending. Each higher cone number requires more heat to bend. A cone 01 needs less heat treatment than cone 1 and cone 020 needs less than 019.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eIt is important not to confuse the lower maturing cones and bars, whose numbers begin with an 0, with the higher cones and bars not containing this prefix.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eAlthough cones do not actually measure temperature, cone bending behavior and temperature are related. Generally, the faster the firing, the higher the temperature required to bend the cone and the slower the firing, the lower the temperature required to bend the cone. The 6 o'clock position (90 angular degrees) is considered the end point of cone bending\u003c\/span\u003e\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113612665154,"sku":"OL011","price":22.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/products\/OL011-2.jpg?v=1683887295"},{"product_id":"orton-pyrometric-witness-cones-for-kiln-firing-ol013","title":"Orton Cones: Large Cones - 013","description":"\u003ch2\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eORTON LARGE CONES - 013 : Box of 50\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/h2\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eOrton cones, pyrometric cones or witness cones are for accurate kiln firing. Order online from Sheffield Pottery Ceramic Supply.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-mce-fragment=\"1\"\u003eOrton Pyrometric Cones for Ceramic Arts\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003ePyrometric cones measure heat-work (the effect of time and temperature).\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eOrton Pyrometric cones are slender pyramids made from about 100 carefully controlled compositions. Each cone number is unique in measuring temperature within a small temperature range (less than 30°C). Cones measure the amount of heat absorbed. As the cone nears its maturing range, it softens and the tip begins to bend, drawn down by the influence of gravity. \u003cspan data-mce-fragment=\"1\"\u003eOrton Cone Temperature Equivalencies\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_cone_wall_chart_horiz_f9550ca0-5d09-45fe-8fdb-47d522d85799.jpg?v=1685085521\" alt=\"orton cone chart pdf\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e\u003ca title=\"Orton Cones Wall Chart\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/cone_wall_chart_horiz_e0886c71-f5ef-434a-a6ff-b895d325eb96.pdf?v=1684422308\"\u003eDownload and Print the Complete Orton Cone Wall Chart... Here.\u003c\/a\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eOrton manufactures four different types of cones (Small cones, Bar cones, Large cones and Self-supporting cones).\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe Large and Self-supporting cones are used to measure temperature uniformity and\/or if there was sufficient heatwork done to mature the ware. Cones indicate whether the ware received an adequate amount of heatwork to properly mature the clay or glaze. A properly fired cone will bend over with the tip of the cone almost touching the shelf. After firing a kiln, a simple glance at the cone can tell if the firing was sucessful.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe small and bar cones are mainly used in the kiln shut-off device called the Kilnsitter. This is a mechanical device that shuts off the kiln when the temperature inside is sufficient to cause the cone to deform under the weight of the Kilnsitter rod.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe only \u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003etrue\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003e measurement of heatwork is from a Large or Self-supporting cone placed on the shelf next to the ware.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eCONE NUMBERS - Orton makes cones from cone 022 up to cone 42. Cone 022 is the lowest melting cone and requires the least amount of heat to deform or bend. During firing, a cone softens and melts as it is heated. Cones used on the kiln shelf bend due to the effects of gravity pulling the tip down. This bending indicates the cone and the ware have received a specific amount of heat. It typically takes 15 to 22 minutes for cones to bend fully once they start bending. Each higher cone number requires more heat to bend. A cone 01 needs less heat treatment than cone 1 and cone 020 needs less than 019.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eIt is important not to confuse the lower maturing cones and bars, whose numbers begin with an 0, with the higher cones and bars not containing this prefix.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eAlthough cones do not actually measure temperature, cone bending behavior and temperature are related. Generally, the faster the firing, the higher the temperature required to bend the cone and the slower the firing, the lower the temperature required to bend the cone. The 6 o'clock position (90 angular degrees) is considered the end point of cone bending\u003c\/span\u003e\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113613025602,"sku":"OL013","price":22.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/products\/OL013-2.jpg?v=1683887298"},{"product_id":"orton-pyrometric-witness-cones-for-kiln-firing-ol014","title":"Orton Cones: Large Cones - 014","description":"\u003ch2\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eORTON LARGE CONES - 014 : Box of 50\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/h2\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eOrton cones, pyrometric cones or witness cones are for accurate kiln firing. Order online from Sheffield Pottery Ceramic Supply.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-mce-fragment=\"1\"\u003eOrton Pyrometric Cones for Ceramic Arts\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003ePyrometric cones measure heat-work (the effect of time and temperature).\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eOrton Pyrometric cones are slender pyramids made from about 100 carefully controlled compositions. Each cone number is unique in measuring temperature within a small temperature range (less than 30°C). Cones measure the amount of heat absorbed. As the cone nears its maturing range, it softens and the tip begins to bend, drawn down by the influence of gravity. \u003cspan data-mce-fragment=\"1\"\u003eOrton Cone Temperature Equivalencies\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg style=\"margin-bottom: 16px; float: none;\" alt=\"orton cone chart pdf\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_cone_wall_chart_horiz_f9550ca0-5d09-45fe-8fdb-47d522d85799.jpg?v=1685085521\"\u003e\u003c\/div\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/cone_wall_chart_horiz_e0886c71-f5ef-434a-a6ff-b895d325eb96.pdf?v=1684422308\" title=\"Orton Cones Wall Chart\"\u003eDownload and Print the Complete Orton Cone Wall Chart... Here.\u003c\/a\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eOrton manufactures four different types of cones (Small cones, Bar cones, Large cones and Self-supporting cones).\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe Large and Self-supporting cones are used to measure temperature uniformity and\/or if there was sufficient heatwork done to mature the ware. Cones indicate whether the ware received an adequate amount of heatwork to properly mature the clay or glaze. A properly fired cone will bend over with the tip of the cone almost touching the shelf. After firing a kiln, a simple glance at the cone can tell if the firing was sucessful.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe small and bar cones are mainly used in the kiln shut-off device called the Kilnsitter. This is a mechanical device that shuts off the kiln when the temperature inside is sufficient to cause the cone to deform under the weight of the Kilnsitter rod.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe only \u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003etrue\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003e measurement of heatwork is from a Large or Self-supporting cone placed on the shelf next to the ware.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eCONE NUMBERS - Orton makes cones from cone 022 up to cone 42. Cone 022 is the lowest melting cone and requires the least amount of heat to deform or bend. During firing, a cone softens and melts as it is heated. Cones used on the kiln shelf bend due to the effects of gravity pulling the tip down. This bending indicates the cone and the ware have received a specific amount of heat. It typically takes 15 to 22 minutes for cones to bend fully once they start bending. Each higher cone number requires more heat to bend. A cone 01 needs less heat treatment than cone 1 and cone 020 needs less than 019.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eIt is important not to confuse the lower maturing cones and bars, whose numbers begin with an 0, with the higher cones and bars not containing this prefix.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eAlthough cones do not actually measure temperature, cone bending behavior and temperature are related. Generally, the faster the firing, the higher the temperature required to bend the cone and the slower the firing, the lower the temperature required to bend the cone. The 6 o'clock position (90 angular degrees) is considered the end point of cone bending\u003c\/span\u003e\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113613254978,"sku":"OL014","price":22.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/products\/OL014-2.jpg?v=1683887302"},{"product_id":"orton-pyrometric-witness-cones-for-kiln-firing-ol015","title":"Orton Cones: Large Cones - 015","description":"\u003ch2\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eORTON LARGE CONES - 015 : Box of 50\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/h2\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eOrton cones, pyrometric cones or witness cones are for accurate kiln firing. Order online from Sheffield Pottery Ceramic Supply.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-mce-fragment=\"1\"\u003eOrton Pyrometric Cones for Ceramic Arts\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003ePyrometric cones measure heat-work (the effect of time and temperature).\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eOrton Pyrometric cones are slender pyramids made from about 100 carefully controlled compositions. Each cone number is unique in measuring temperature within a small temperature range (less than 30°C). Cones measure the amount of heat absorbed. As the cone nears its maturing range, it softens and the tip begins to bend, drawn down by the influence of gravity. \u003cspan data-mce-fragment=\"1\"\u003eOrton Cone Temperature Equivalencies\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003chr data-mce-fragment=\"1\"\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg style=\"margin-bottom: 16px; float: none;\" alt=\"orton cone chart pdf\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/orton_cone_wall_chart_horiz_f9550ca0-5d09-45fe-8fdb-47d522d85799.jpg?v=1685085521\"\u003e\u003c\/div\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/cone_wall_chart_horiz_e0886c71-f5ef-434a-a6ff-b895d325eb96.pdf?v=1684422308\" title=\"Orton Cones Wall Chart\"\u003eDownload and Print the Complete Orton Cone Wall Chart... Here.\u003c\/a\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eOrton manufactures four different types of cones (Small cones, Bar cones, Large cones and Self-supporting cones).\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe Large and Self-supporting cones are used to measure temperature uniformity and\/or if there was sufficient heatwork done to mature the ware. Cones indicate whether the ware received an adequate amount of heatwork to properly mature the clay or glaze. A properly fired cone will bend over with the tip of the cone almost touching the shelf. After firing a kiln, a simple glance at the cone can tell if the firing was sucessful.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe small and bar cones are mainly used in the kiln shut-off device called the Kilnsitter. This is a mechanical device that shuts off the kiln when the temperature inside is sufficient to cause the cone to deform under the weight of the Kilnsitter rod.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe only \u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003etrue\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003e measurement of heatwork is from a Large or Self-supporting cone placed on the shelf next to the ware.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eCONE NUMBERS - Orton makes cones from cone 022 up to cone 42. Cone 022 is the lowest melting cone and requires the least amount of heat to deform or bend. During firing, a cone softens and melts as it is heated. Cones used on the kiln shelf bend due to the effects of gravity pulling the tip down. This bending indicates the cone and the ware have received a specific amount of heat. It typically takes 15 to 22 minutes for cones to bend fully once they start bending. Each higher cone number requires more heat to bend. A cone 01 needs less heat treatment than cone 1 and cone 020 needs less than 019.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eIt is important not to confuse the lower maturing cones and bars, whose numbers begin with an 0, with the higher cones and bars not containing this prefix.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eAlthough cones do not actually measure temperature, cone bending behavior and temperature are related. Generally, the faster the firing, the higher the temperature required to bend the cone and the slower the firing, the lower the temperature required to bend the cone. The 6 o'clock position (90 angular degrees) is considered the end point of cone bending\u003c\/span\u003e\u003c\/p\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113613386050,"sku":"OL015","price":22.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/products\/OL015-2.jpg?v=1683887306"}],"url":"https:\/\/www.sheffield-pottery.live\/collections\/orton-pyrometric-cones-and-bars-colors.oembed","provider":"Sheffield Pottery Inc.","version":"1.0","type":"link"}