{"title":"New Stoneware Clay","description":"\u003cp\u003eNew stoneware clays from Potterycrafts!\u003c\/p\u003e","products":[{"product_id":"prai-white-stoneware-clay","title":"PRAI White Stoneware Clay","description":"\u003cp id=\"isPasted\"\u003eWhite stoneware clay with 40% impalpable grog 0-0.2 mm (up to 80 Mesh). Formulated for artistic ceramics, it is ideal for throwing and modelling smooth pieces with fine details. The high content of grog confers an excellent behaviour during drying and firing. Its particular ivory colour after firing is much appreciated and provides an excellent ware for glazes and colouring oxides, which develop bright and intense tones. Suitable for tableware (\u003cstrong\u003efood-safe\u003c\/strong\u003e), according to ISO 6486. Available in extruded body (moist form).\u003c\/p\u003e\u003cp\u003eFiring range recommended for the clay to develop its best performance, both in terms of technical and safety characteristics, under conventional firing conditions. The colour samples may show temperatures outside the recommended range to provide a broader view, but these are pieces fired under controlled conditions. Cone equivalence according to Orton table for self-supporting cones, regular-SSB and 150ºC\/hr heating rate\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFiring range: 1240-1300°C \/ Cone 6-10\u003c\/li\u003e\n\u003cli\u003eBiscuit temperature: 1000°C \/ Cone 06\u003c\/li\u003e\n\u003cli\u003eWater content: 19%\u003c\/li\u003e\n\u003cli\u003ePlasticity (IP Atterberg): 16\u003c\/li\u003e\n\u003cli\u003eCarbonate content (CaCO3): 0%\u003c\/li\u003e\n\u003cli\u003eDrying shrinkage: 5.9%\u003c\/li\u003e\n\u003cli\u003eFiring shrinkage 1300ºC: 7.0%\u003c\/li\u003e\n\u003cli\u003ePorosity (water absorption) at 1300°C: 0.0%\u003c\/li\u003e\n\u003cli\u003eDry bending strength: 3.0 N\/mm2\u003c\/li\u003e\n\u003cli\u003eFired bending strength 1300°C: 51.0 N\/mm2\u003c\/li\u003e\n\u003cli\u003eThermal coefficient 1250°C (25-500°C): 60.4x10^-7ºC^-1\u003c\/li\u003e\n\u003cli\u003eFiring: Ceramic kiln high fire\u003c\/li\u003e\n\u003cli\u003eGrog: Impalpable grog\u003c\/li\u003e\n\u003cli\u003eState: Moist form (plastic body)\u003c\/li\u003e\n\u003cli\u003eStiffness: 4 throwing and modelling\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"COLLET","offers":[{"title":"12.5","offer_id":55423731892610,"sku":"P1701","price":16.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0865\/4399\/1066\/files\/PRAI-White-Stoneware-Clay.jpg?v=1752676887"},{"product_id":"prgi-golden-brown-stoneware-clay","title":"PRGI Golden Brown Stoneware Clay","description":"\u003cp id=\"isPasted\"\u003eGolden brown stoneware clay with 40% impalpable grog 0-0.2 mm (up to 80 Mesh). Formulated for artistic ceramics, it is ideal for throwing and modelling smooth pieces with fine details. The high content of grog confers an excellent behaviour during drying and firing. Its amazing firing colour, with different tones of golden brown, highlights the relief of the piece, and becomes an ideal artistic mean of expression. Suitable for tableware (\u003cstrong\u003efood-safe\u003c\/strong\u003e), according to ISO 6486. Available in extruded body (moist form).\u003c\/p\u003e\u003cp\u003eFiring range recommended for the clay to develop its best performance, both in terms of technical and safety characteristics, under conventional firing conditions. The colour samples may show temperatures outside the recommended range to provide a broader view, but these are pieces fired under controlled conditions. Cone equivalence according to Orton table for self-supporting cones, regular-SSB and 150ºC\/hr heating rate\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFiring range: 1240-1300°C \/ Cone 6-10\u003c\/li\u003e\n\u003cli\u003eBiscuit temperature: 1000°C \/ Cone 06\u003c\/li\u003e\n\u003cli\u003eWater content: 21%\u003c\/li\u003e\n\u003cli\u003ePlasticity (IP Atterberg): 19\u003c\/li\u003e\n\u003cli\u003eCarbonate content (CaCO3): 0%\u003c\/li\u003e\n\u003cli\u003eDrying shrinkage: 7.2%\u003c\/li\u003e\n\u003cli\u003eFiring shrinkage 1300°C: 5.8%\u003c\/li\u003e\n\u003cli\u003ePorosity (water absorption) at 1300°C: 3.5%\u003c\/li\u003e\n\u003cli\u003eDry bending strength: 5.4 N\/mm2\u003c\/li\u003e\n\u003cli\u003eFired bending strength 1300°C: 37.7 N\/mm2\u003c\/li\u003e\n\u003cli\u003eThermal coefficient 1250°C (25-500°C): 67.4x10^-7ºC^-1\u003c\/li\u003e\n\u003cli\u003eFiring: Ceramic kiln high fire\u003c\/li\u003e\n\u003cli\u003eGrog: Impalpable grog\u003c\/li\u003e\n\u003cli\u003eState: Moist form (plastic body)\u003c\/li\u003e\n\u003cli\u003eStiffness: 4 throwing and modelling\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"COLLET","offers":[{"title":"12.5","offer_id":55423852806530,"sku":"P1702","price":15.36,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0865\/4399\/1066\/files\/PRGI-Golden-Brown-Stoneware-Clay.jpg?v=1752677686"},{"product_id":"prni-black-stoneware-clay","title":"PRNI Black Stoneware Clay","description":"\u003cp id=\"isPasted\"\u003eBlack stoneware clay with 40% impalpable grog 0-0.2 mm (up to 80 Mesh). Formulated for artistic ceramics, it is ideal for wheel-throwing and modelling smooth pieces with fine details. The high content of grog confers an excellent behaviour during drying and firing. It’s beautiful and intense black firing colour in oxidising atmosphere is very exclusive of PRN range and becomes an ideal artistic mean of expression. In reducing atmosphere, metallic effects with shades of blue are obtained. Suitable for tableware (\u003cstrong\u003efood-safe\u003c\/strong\u003e), according to ISO 6486. Available in extruded body (moist form).\u003c\/p\u003e\u003cp\u003eFiring range recommended for the clay to develop its best performance, both in terms of technical and safety characteristics, under conventional firing conditions. The colour samples may show temperatures outside the recommended range to provide a broader view, but these are pieces fired under controlled conditions. Cone equivalence according to Orton table for self-supporting cones, regular-SSB and 150ºC\/hr heating rate.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eRecommendations for use with glazes\u003cbr\u003e\u003c\/strong\u003eUse zinc-free (Zn-free) glazes to prevent from unexpected reactions such as bubbling or colour changes. Other elements that can react are zirconium (Zr) and tin (Sn). We recommend consulting your usual glaze supplier to ensure proper suitability with this ceramic clay body.\u003cbr\u003eDo not use glazes with a low coefficient of thermal expansion (a25-300°C \u0026lt;60x10-7°C -1). The PRN clay fired at high temperature has a high coefficient of thermal expansion in the range of 100 to 200°C, which causes tensions between the glaze and the support, mainly in pieces glazed on one side only, which can cause breakage during cooling in the kiln or even later (for example, when pouring hot water inside). Check with your usual glaze supplier to ensure that you use glazes with a medium-high coefficient of thermal expansion (a25-300°C \u0026gt;60x10-7°C -1).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFiring range: 1200-1240°C \/ Cone 5-6\u003c\/li\u003e\n\u003cli\u003eBiscuit temperature: 1000°C \/ Cone 06\u003c\/li\u003e\n\u003cli\u003eWater content: 21%\u003c\/li\u003e\n\u003cli\u003ePlasticity (IP Atterberg): 19\u003c\/li\u003e\n\u003cli\u003eCarbonate content (CaCO3): 0%\u003c\/li\u003e\n\u003cli\u003eDrying shrinkage: 8.2%\u003c\/li\u003e\n\u003cli\u003eFiring shrinkage 1240°C: 5.4%\u003c\/li\u003e\n\u003cli\u003ePorosity (water absorption) at 1240°C: 4%\u003c\/li\u003e\n\u003cli\u003eDry bending strength: 5.9 N\/mm2\u003c\/li\u003e\n\u003cli\u003eFired bending strength 1240°C: 51.4 N\/mm2\u003c\/li\u003e\n\u003cli\u003eThermal coefficient 1240°C (25-500°C): 63.8x10^-7°C ^-1\u003c\/li\u003e\n\u003cli\u003eFiring: Ceramic kiln high fire\u003c\/li\u003e\n\u003cli\u003eGrog: Impalpable grog\u003c\/li\u003e\n\u003cli\u003eState: Moist form (plastic body)\u003c\/li\u003e\n\u003cli\u003eStiffness: 4 throwing and modelling\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"COLLET","offers":[{"title":"12.5","offer_id":55424081199490,"sku":"P1705","price":17.26,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0865\/4399\/1066\/files\/PRNI-Black-Stoneware-Clay.jpg?v=1752679402"},{"product_id":"berlin-grey-stoneware-clay","title":"BERLIN Grey Stoneware Clay","description":"\u003cp id=\"isPasted\"\u003eGrey stoneware clay with 40% impalpable grog 0-0.2 mm (up to 80 Mesh). Formulated for artistic ceramics, it is ideal for throwing and modelling smooth pieces with fine details. The high content of grog confers an excellent behaviour during drying and firing. Depending on the firing temperature, it develops an interesting range of greys, from cement to dark grey, which satisfies the most avant-garde trends in artistic ceramics. Suitable for tableware (\u003cstrong\u003efood-safe\u003c\/strong\u003e), according to ISO 6486. Available in extruded body (moist form).\u003c\/p\u003e\u003cp\u003eFiring range recommended for the clay to develop its best performance, both in terms of technical and safety characteristics, under conventional firing conditions. The colour samples may show temperatures outside the recommended range to provide a broader view, but these are pieces fired under controlled conditions. Cone equivalence according to Orton table for self-supporting cones, regular-SSB and 150ºC\/hr heating rate.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFiring range: 1200-1300°C \/ Cone 5-10\u003c\/li\u003e\n\u003cli\u003eBiscuit temperature: 1000°C \/ Cone 06\u003c\/li\u003e\n\u003cli\u003eWater content: 19%\u003c\/li\u003e\n\u003cli\u003ePlasticity (IP Atterberg): 16\u003c\/li\u003e\n\u003cli\u003eCarbonate content (CaCO3): 0%\u003c\/li\u003e\n\u003cli\u003eDrying shrinkage: 5.7%\u003c\/li\u003e\n\u003cli\u003eFiring shrinkage 1300°C: 6.4%\u003c\/li\u003e\n\u003cli\u003ePorosity (water absorption) at 1300°C: 0.1%\u003c\/li\u003e\n\u003cli\u003eDry bending strength: 2.9 N\/mm2\u003c\/li\u003e\n\u003cli\u003eFired bending strength 1240°C: 51.4 N\/mm2\u003c\/li\u003e\n\u003cli\u003eThermal coefficient 1300°C (25-500°C): 60.1x10^-7°C ^-1\u003c\/li\u003e\n\u003cli\u003eFiring: Ceramic kiln high fire\u003c\/li\u003e\n\u003cli\u003eGrog: Impalpable grog\u003c\/li\u003e\n\u003cli\u003eState: Moist form (plastic body)\u003c\/li\u003e\n\u003cli\u003eStiffness: 4 throwing and modelling\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"COLLET","offers":[{"title":"12.5","offer_id":55424161317250,"sku":"P1703","price":19.57,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0865\/4399\/1066\/files\/BERLIN-Grey-Stoneware-Clay.jpg?v=1752680296"},{"product_id":"toffee-caramel-stoneware-clay","title":"TOFFEE Caramel Stoneware Clay","description":"\u003cp id=\"isPasted\"\u003eCaramel stoneware clay with 40% impalpable grog 0-0.2 mm (up to 80 Mesh). Formulated for artistic ceramics, it is ideal for throwing and modelling smooth pieces with fine details. The high content of grog confers an excellent behaviour during drying and firing. Depending on the firing temperature, it develops a beautiful range of natural tones, from oatmeal beige to caramel brown, which create a warm base that is highly appreciated in ceramic decoration. Suitable for tableware (food-safe), according to ISO 6486. Available in extruded body (moist form).\u003c\/p\u003e\u003cp\u003eFiring range recommended for the clay to develop its best performance, both in terms of technical and safety characteristics, under conventional firing conditions. The colour samples may show temperatures outside the recommended range to provide a broader view, but these are pieces fired under controlled conditions. Cone equivalence according to Orton table for self-supporting cones, regular-SSB and 150ºC\/hr heating rate.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFiring range: 1200-1300°C \/ Cone 5-10\u003c\/li\u003e\n\u003cli\u003eBiscuit temperature: 1000°C \/ Cone 06\u003c\/li\u003e\n\u003cli\u003eWater content: 19%\u003c\/li\u003e\n\u003cli\u003ePlasticity (IP Atterberg): 13\u003c\/li\u003e\n\u003cli\u003eCarbonate content (CaCO3): 0%\u003c\/li\u003e\n\u003cli\u003eDrying shrinkage: 6.2%\u003c\/li\u003e\n\u003cli\u003eFiring shrinkage 1300°C: 5.6%\u003c\/li\u003e\n\u003cli\u003ePorosity (water absorption) at 1300°C: 0.1%\u003c\/li\u003e\n\u003cli\u003eDry bending strength: 3.5 N\/mm2\u003c\/li\u003e\n\u003cli\u003eFired bending strength 1300°C: 50.8 N\/mm2\u003c\/li\u003e\n\u003cli\u003eThermal coefficient 12500°C (25-500°C): 67.6x10^-7°C ^-1\u003c\/li\u003e\n\u003cli\u003eFiring: Ceramic kiln high fire\u003c\/li\u003e\n\u003cli\u003eGrog: Impalpable grog\u003c\/li\u003e\n\u003cli\u003eState: Moist form (plastic body)\u003c\/li\u003e\n\u003cli\u003eStiffness: 4 throwing and modelling\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"COLLET","offers":[{"title":"12.5","offer_id":55424227803522,"sku":"P1704","price":17.12,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0865\/4399\/1066\/files\/TOFFEE-Caramel-Stoneware-Clay.jpg?v=1752681012"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0865\/4399\/1066\/collections\/Stoneware-_-Porcelain-Clay_6d90c6d1-6828-4c96-a1b8-292c4edae3ab.jpg?v=1754047148","url":"https:\/\/potterycrafts.live\/collections\/new-stoneware-clay.oembed","provider":"Potterycrafts","version":"1.0","type":"link"}