{"product_id":"orton-pyrometric-cones-for-kiln-sitters-os010","title":"Orton Cones: Small Cones - 010","description":"\u003cspan\u003e\u003c\/span\u003e\u003cspan style=\"font-weight: bold; font-size: 12pt;\"\u003eORTON SMALL CONES - 010 : Box of 50\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\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\" style=\"width: 701px; height: 451px;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"1\" valign=\"top\" width=\"75%\"\u003e\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\n\u003c\/div\u003e\n\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\" colspan=\"2\"\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\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\n\u003c\/div\u003e\n\u003cp style=\"text-align: left;\"\u003eOrton Pyrometric\ncones are slender pyramids made from about 100 carefully controlled\ncompositions. Each cone number is unique in measuring temperature\nwithin a small temperature range (less than 30°C). Cones measure the\namount of heat absorbed. As the cone nears its maturing range, it\nsoftens and the tip begins to bend, drawn down by the influence of\ngravity.\u003c\/p\u003e\n\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\" id=\"Table_01\"\u003e\n\u003ctbody\u003e\n\u003ctr height=\"3\"\u003e\n\u003ctd colspan=\"5\" height=\"3\" style=\"background-repeat: repeat-x; background-image: url(\/v\/vspfiles\/images\/frame_01.gif);\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"10\"\u003e\n\u003ctd rowspan=\"3\" style=\"background-repeat: repeat-y; background-image: url(\/v\/vspfiles\/images\/frame_02.gif);\" valign=\"top\" width=\"2\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003ctd rowspan=\"3\" valign=\"top\" width=\"8\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003ctd height=\"10\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003ctd rowspan=\"3\" width=\"8\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003ctd rowspan=\"3\" style=\"background-repeat: repeat-y; background-image: url(\/v\/vspfiles\/images\/frame_04.gif);\" valign=\"top\" width=\"2\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\" valign=\"top\"\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_dd25a3a5-db3c-48c2-bf07-682ba219c735.jpg?v=1684309434\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"22\"\u003e\n\u003ctd align=\"center\" height=\"22\"\u003e\n\u003cp class=\"p2\"\u003e\u003ccap\u003e3 cone method for monitoring heat-work\u003c\/cap\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"3\"\u003e\n\u003ctd colspan=\"5\" height=\"3\" style=\"background-repeat: repeat-x; background-image: url(\/v\/vspfiles\/images\/frame_07.gif);\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003ctd background=\"\/v\/vspfiles\/images\/rightbox.gif\" rowspan=\"1\" style=\"background-repeat: repeat-y;\" valign=\"top\" width=\"4\"\u003e\u003cspan style=\"color: white;\"\u003e.\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd align=\"left\" valign=\"top\" width=\"30%\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"4\"\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=\"\/collections\/orton-cone-chart\" 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\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cbr\u003e\u003cspan style=\"font-weight: bold; font-size: 12pt;\"\u003eOrton Cone Temperature Equivilancies\u003c\/span\u003e\u003cbr\u003e\n\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\" target=\"_blank\" title=\"Orton Cone Chart\"\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_7d846c9c-ce9e-4e5e-b955-87aae74a1234.jpg?v=1684309450\"\u003e\u003c\/a\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\" target=\"_blank\" title=\"Orton Cone Chart\"\u003eDownload and Print the Complete Orton Cone Wall Chart... Here.\u003c\/a\u003e\u003cbr\u003e\n\u003cbr\u003e\nOrton manufactures four different types of cones (Small cones, Bar cones, Large cones and Self-supporting cones).  \u003cbr\u003e\n\u003cbr\u003eThe Large and Self-supporting cones are used to measure temperature\nuniformity and\/or if there was sufficient heatwork done to mature the\nware. Cones indicate whether the ware received an adequate amount of\nheatwork to properly mature the clay or glaze. A properly fired cone\nwill bend over with the tip of the cone almost touching the shelf.\nAfter firing a kiln, a simple glance at the cone can tell if the firing\nwas sucessful.\u003cbr\u003e\n\u003cbr\u003eThe small and bar cones are mainly used in the kiln shut-off device\ncalled the Kilnsitter. This is a mechanical device that shuts off the\nkiln when the temperature inside is sufficient to cause the cone to\ndeform under the weight of the Kilnsitter rod.\u003cbr\u003e\n\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\nNUMBERS - Orton makes cones from cone 022 up to cone 42. Cone 022 is\nthe lowest melting cone and requires the least amount of heat to deform\nor bend. During firing, a cone softens and melts as it is heated. Cones\nused on the kiln shelf bend due to the effects of gravity pulling the\ntip down. This bending indicates the cone and the ware have received a\nspecific amount of heat. It typically takes 15 to 22 minutes for cones\nto bend fully once they start bending. Each higher cone number requires\nmore heat to bend. A cone 01 needs less heat treatment than cone 1 and\ncone 020 needs less than 019. \u003cbr\u003eIt is important not to confuse the\nlower maturing cones and bars, whose numbers begin with an 0, with the\nhigher cones and bars not containing this prefix.\n\u003cbr\u003eAlthough cones do not actually measure temperature, cone bending\nbehavior and temperature are related. Generally, the faster the firing,\nthe higher the temperature required to bend the cone and the slower the\nfiring, the lower the temperature required to bend the cone. The 6\no'clock position (90 angular degrees) is considered the end point of\ncone bending.\n\u003cbr\u003e","brand":"Orton","offers":[{"title":"Default Title","offer_id":45113649496386,"sku":"OS010","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","url":"https:\/\/www.sheffield-pottery.live\/products\/orton-pyrometric-cones-for-kiln-sitters-os010","provider":"Sheffield Pottery Inc.","version":"1.0","type":"link"}