{"product_id":"georgia-pacific-k-59-plaster-50-lb","title":"Georgia-Pacific K-59 Pottery Plaster","description":"\u003cdiv class=\"rm-testing-statement\" style=\"border:2px solid #8a5a00;border-radius:6px;padding:12px 16px;margin:16px 0;background:#fdf6e3;\"\u003e\u003cp style=\"margin:0;\"\u003e\u003cstrong\u003eYou must test before you use it, at any scale.\u003c\/strong\u003e Raw materials, mined or man-made, are not consistent. Setting time, strength, expansion and absorption can change from one bag to the next and from one supplier to another, even when the name on the bag stays the same. Before you pour a mold or casting of any size, mix a small test batch with your own water and mixing method, let it set, and check the results.\u003c\/p\u003e\u003c\/div\u003e\n\u003ch2 class=\"abz-seo-product\"\u003eGeorgia-Pacific K-59 Plaster 50 Lbs.\u003c\/h2\u003e\n\u003cp\u003eGeorgia-Pacific K-59 is a pottery plaster for making slip-casting molds, press molds and other ceramic mold work. It produces dense, durable molds with smooth, pinhole-free surfaces, and is widely used as a substitute for USG No. 1 Pottery Plaster.\u003c\/p\u003e\n\u003ch3\u003eTypical Properties\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eConsistency: 68–70 parts water to 100 parts plaster by weight (can be reduced to 64 for stronger molds)\u003c\/li\u003e\n\u003cli\u003eVicat set time: 25–35 minutes\u003c\/li\u003e\n\u003cli\u003eSetting expansion: 0.22–0.27%\u003c\/li\u003e\n\u003cli\u003eDry density: 69–71 lb\/ft³\u003c\/li\u003e\n\u003cli\u003eCompressive strength: 2,000–2,600 psi\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSold in 50 lb bags.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/gpindustrialplasters.com\/pottery-plaster\/\" target=\"_blank\" rel=\"noopener\"\u003eGeorgia-Pacific pottery plaster technical data and Safety Data Sheet (SDS)\u003c\/a\u003e\u003c\/p\u003e","brand":"Georgia-Pacific","offers":[{"title":"50 Pounds","offer_id":67189298266483,"sku":"RMGPK59","price":31.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/georgia-pacific-k-59-plaster.jpg?v=1792782493","url":"https:\/\/www.sheffield-pottery.live\/products\/georgia-pacific-k-59-plaster-50-lb","provider":"Sheffield Pottery Inc.","version":"1.0","type":"link"}