{"title":"Silica, Grogs and Refractories","description":"\u003cdiv class=\"rm-type-pills\" style=\"margin:16px 0 8px;\"\u003e\n\u003ca href=\"\/collections\/raw-materials-and-ceramic-chemicals\" style=\"display:inline-block;padding:8px 18px;margin:0 8px 10px 0;border:1px solid #2b5f8a;border-radius:999px;font-size:15px;line-height:1.3;text-decoration:none;background:#ffffff;color:#2b5f8a;\"\u003eAll Raw Materials\u003c\/a\u003e\u003ca href=\"\/collections\/mason-stains\" style=\"display:inline-block;padding:8px 18px;margin:0 8px 10px 0;border:1px solid #2b5f8a;border-radius:999px;font-size:15px;line-height:1.3;text-decoration:none;background:#ffffff;color:#2b5f8a;\"\u003eMason Stains\u003c\/a\u003e\u003ca href=\"\/collections\/raw-materials-frits\" style=\"display:inline-block;padding:8px 18px;margin:0 8px 10px 0;border:1px solid #2b5f8a;border-radius:999px;font-size:15px;line-height:1.3;text-decoration:none;background:#ffffff;color:#2b5f8a;\"\u003eFrits\u003c\/a\u003e\u003ca href=\"\/collections\/raw-materials-feldspars\" style=\"display:inline-block;padding:8px 18px;margin:0 8px 10px 0;border:1px solid #2b5f8a;border-radius:999px;font-size:15px;line-height:1.3;text-decoration:none;background:#ffffff;color:#2b5f8a;\"\u003eFeldspars\u003c\/a\u003e\u003ca href=\"\/collections\/raw-materials-clays-and-kaolins\" style=\"display:inline-block;padding:8px 18px;margin:0 8px 10px 0;border:1px solid #2b5f8a;border-radius:999px;font-size:15px;line-height:1.3;text-decoration:none;background:#ffffff;color:#2b5f8a;\"\u003eClays and Kaolins\u003c\/a\u003e\u003ca href=\"\/collections\/raw-materials-oxides-and-carbonates\" style=\"display:inline-block;padding:8px 18px;margin:0 8px 10px 0;border:1px solid #2b5f8a;border-radius:999px;font-size:15px;line-height:1.3;text-decoration:none;background:#ffffff;color:#2b5f8a;\"\u003eOxides and Carbonates\u003c\/a\u003e\u003ca href=\"\/collections\/raw-materials-silica-grogs-and-refractories\" style=\"display:inline-block;padding:8px 18px;margin:0 8px 10px 0;border:1px solid #2b5f8a;border-radius:999px;font-size:15px;line-height:1.3;text-decoration:none;background:#2b5f8a;color:#ffffff;\"\u003eSilica, Grogs and Refractories\u003c\/a\u003e\u003ca href=\"\/collections\/raw-materials-additives\" style=\"display:inline-block;padding:8px 18px;margin:0 8px 10px 0;border:1px solid #2b5f8a;border-radius:999px;font-size:15px;line-height:1.3;text-decoration:none;background:#ffffff;color:#2b5f8a;\"\u003eAdditives\u003c\/a\u003e\u003ca href=\"\/collections\/us-gypsum-usg-plaster-information\" style=\"display:inline-block;padding:8px 18px;margin:0 8px 10px 0;border:1px solid #2b5f8a;border-radius:999px;font-size:15px;line-height:1.3;text-decoration:none;background:#ffffff;color:#2b5f8a;\"\u003ePlasters\u003c\/a\u003e\n\u003c\/div\u003e","products":[{"product_id":"molochite-30m-55-pound-bag-rmmol30","title":"Molochite 30 Mesh","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. Color, strength, particle size and chemistry 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 use this material in a glaze, slip or clay body of any size, mix a small test batch, fire it on your own clay in your own kiln, and check the results.\u003c\/p\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003e\u003c\/span\u003eMolochite 30M\u003c\/p\u003e","brand":"Sheffield Pottery","offers":[{"title":"1 Pound","offer_id":67289115459955,"sku":"RMMOL30-1","price":4.35,"currency_code":"USD","in_stock":true},{"title":"5 Pounds","offer_id":67289115492723,"sku":"RMMOL30-5","price":21.0,"currency_code":"USD","in_stock":true},{"title":"10 Pounds","offer_id":62236389212531,"sku":"RMMOL30-10","price":41.0,"currency_code":"USD","in_stock":true},{"title":"25 Pounds","offer_id":62236389245299,"sku":"RMMOL3-25","price":100.0,"currency_code":"USD","in_stock":true},{"title":"55 Pounds","offer_id":62236389278067,"sku":"RMMOL30","price":145.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/Molochite-30-Mesh-RockyMountainClay.jpg?v=1693515127"},{"product_id":"molochite-50-80m-55-pound-bag-rmmol5080","title":"Molochite 50-80 Mesh","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. Color, strength, particle size and chemistry 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 use this material in a glaze, slip or clay body of any size, mix a small test batch, fire it on your own clay in your own kiln, and check the results.\u003c\/p\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003e\u003c\/span\u003eMolochite 50-80M\u003c\/p\u003e","brand":"Sheffield Pottery","offers":[{"title":"1 Pound","offer_id":67288216764787,"sku":"RMMOL5080-1","price":4.35,"currency_code":"USD","in_stock":true},{"title":"5 Pounds","offer_id":67288216797555,"sku":"RMMOL5080-5","price":21.0,"currency_code":"USD","in_stock":true},{"title":"10 Pounds","offer_id":67288216830323,"sku":"RMMOL5080-10","price":41.0,"currency_code":"USD","in_stock":true},{"title":"25 Pounds","offer_id":67288216863091,"sku":"RMMOL5080-25","price":100.0,"currency_code":"USD","in_stock":true},{"title":"55 Pounds","offer_id":45105274487106,"sku":"RMMOL5080","price":145.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/DM-MOL5080_Molochite_50_to_80_Mesh_HWC_500x500_600x600_b51626cd-f76c-4eda-a2ac-8d3b115da057.jpg?v=1693515183"},{"product_id":"mullite-200m-10-pounds-rmmul200","title":"Mullite 200 Mesh","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. Color, strength, particle size and chemistry 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 use this material in a glaze, slip or clay body of any size, mix a small test batch, fire it on your own clay in your own kiln, and check the results.\u003c\/p\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003e\u003c\/span\u003eMullite 200M\u003c\/p\u003e","brand":"Sheffield Pottery","offers":[{"title":"1 Pound","offer_id":67288220303731,"sku":"RMMUL20050-1","price":1.55,"currency_code":"USD","in_stock":true},{"title":"5 Pounds","offer_id":67288220336499,"sku":"RMMUL20050-5","price":5.25,"currency_code":"USD","in_stock":true},{"title":"10 Pounds","offer_id":45105274814786,"sku":"RMMUL200","price":9.5,"currency_code":"USD","in_stock":true},{"title":"25 Pounds","offer_id":67288220369267,"sku":"RMMUL20050-25","price":21.25,"currency_code":"USD","in_stock":true},{"title":"50 Pounds","offer_id":67288220402035,"sku":"RMMUL20050-50","price":41.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/large-Tile_six_dry_clay_600x600_3063ae0e-f5db-49b7-8a4b-6e170b71fddb.jpg?v=1693515230"},{"product_id":"mullite-35m-10-pounds-rmmul35","title":"Mullite 35 Mesh","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. Color, strength, particle size and chemistry 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 use this material in a glaze, slip or clay body of any size, mix a small test batch, fire it on your own clay in your own kiln, and check the results.\u003c\/p\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003e\u003c\/span\u003eMullite 35M\u003c\/p\u003e","brand":"Sheffield Pottery","offers":[{"title":"1 Pound","offer_id":67288219648371,"sku":"RMMUL3550-1","price":1.55,"currency_code":"USD","in_stock":true},{"title":"5 Pounds","offer_id":67288219681139,"sku":"RMMUL3550-5","price":5.25,"currency_code":"USD","in_stock":true},{"title":"10 Pounds","offer_id":45105275076930,"sku":"RMMUL35","price":9.5,"currency_code":"USD","in_stock":true},{"title":"25 Pounds","offer_id":67288219713907,"sku":"RMMUL3550-25","price":21.25,"currency_code":"USD","in_stock":true},{"title":"50 Pounds","offer_id":67288219746675,"sku":"RMMUL3550-50","price":41.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/Mullite-35-Mesh-RockyMountainClay.jpg?v=1693515280"},{"product_id":"1-qrock-white-silica-sand-grog-50-pounds-rm1white50","title":"#1 Qrock White Silica Sand (Grog)","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. Color, strength, particle size and chemistry 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 use this material in a glaze, slip or clay body of any size, mix a small test batch, fire it on your own clay in your own kiln, and check the results.\u003c\/p\u003e\u003c\/div\u003e\n\u003cspan\u003e\u003c\/span\u003e#1 White silica sand  Qrock\u003cbr\u003eCoarse (approx 40 mesh)\u003cbr\u003eUsed as a grog in some clay bodies.\u003cbr\u003e","brand":"Sheffield Pottery","offers":[{"title":"5 Pounds","offer_id":67286306455923,"sku":"RM1WHITE-5","price":5.75,"currency_code":"USD","in_stock":true},{"title":"10 Pounds","offer_id":67286306488691,"sku":"RM1WHITE","price":10.5,"currency_code":"USD","in_stock":true},{"title":"25 Pounds","offer_id":67286306521459,"sku":"RM1WHITE-25","price":23.75,"currency_code":"USD","in_stock":true},{"title":"50 Pounds","offer_id":45113682559298,"sku":"RM1WHITE50","price":23.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/large-sand_silica_30m.jpg?v=1724425926"},{"product_id":"cm-flint-grog-12-20-coarse-10-pounds-rmcmfg122050","title":"CM Flint Grog 12-20 (Coarse)","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. Color, strength, particle size and chemistry 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 use this material in a glaze, slip or clay body of any size, mix a small test batch, fire it on your own clay in your own kiln, and check the results.\u003c\/p\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003e\u003cspan style=\"font-family: Verdana;\"\u003eCm Flint Grog 12-20 (coarse) : 50 pounds\u003c\/span\u003e\u003c\/h2\u003e\n\u003cdiv data-canvas-width=\"258.23999999999995\" data-font-name=\"Times\" dir=\"ltr\" style=\"font-size: 16px; font-family: serif; left: 264px; top: 328.16px; transform: scale(1.08962, 1); transform-origin: 0% 0% 0px;\"\u003e\u003cspan style=\"font-family: Verdana;\"\u003eA calcined fireclay with high refractoriness, low alkalis and iron, and a low cristobalite content. This material is ideally suited for the refractory industry for manufacturing bricks, castable, and plastic. It is also used in the pottery and terra cotta industries as a grog in a variety of bodies formulations.\u003c\/span\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Sheffield Pottery","offers":[{"title":"5 Pounds","offer_id":67288213848435,"sku":"RMCMFG1220-5","price":7.5,"currency_code":"USD","in_stock":true},{"title":"10 Pounds","offer_id":67288213881203,"sku":"RMCMFG1220","price":14.0,"currency_code":"USD","in_stock":true},{"title":"25 Pounds","offer_id":67288213913971,"sku":"RMCMFG1220-25","price":32.5,"currency_code":"USD","in_stock":true},{"title":"50 Pounds","offer_id":45113699762498,"sku":"RMCMFG122050","price":32.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/hawthorn__53161.jpg?v=1696622407"},{"product_id":"cm-flint-grog-8-20-extra-coarse-50-lb-rmcmfg820","title":"CM Flint Grog 8-20 (Extra Coarse)","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. Color, strength, particle size and chemistry 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 use this material in a glaze, slip or clay body of any size, mix a small test batch, fire it on your own clay in your own kiln, and check the results.\u003c\/p\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003e\u003c\/span\u003eCm flint grog 8-20 (extra coarse)\u003c\/p\u003e","brand":"Sheffield Pottery","offers":[{"title":"5 Pounds","offer_id":67294140367219,"sku":"RMCMFG820-5","price":7.25,"currency_code":"USD","in_stock":true},{"title":"10 Pounds","offer_id":67294140399987,"sku":"RMCMFG820-10","price":13.5,"currency_code":"USD","in_stock":true},{"title":"25 Pounds","offer_id":67294140432755,"sku":"RMCMFG820-25","price":31.25,"currency_code":"USD","in_stock":true},{"title":"50 Pounds","offer_id":45113699959106,"sku":"RMCMFG820","price":31.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/hawthorn__53161_53f44058-304a-4b7e-a0b7-1782e3486be1.jpg?v=1696622453"},{"product_id":"flint-200m-sil-co-sil-75-rmfli20050","title":"Flint 200 Mesh (Sil-Co-Sil 75)","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. Color, strength, particle size and chemistry 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 use this material in a glaze, slip or clay body of any size, mix a small test batch, fire it on your own clay in your own kiln, and check the results.\u003c\/p\u003e\u003c\/div\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003ch2 class=\"abz-seo-product\"\u003eFLINT 200M \/ SIL-CO-SIL 75\u003c\/h2\u003e\n\u003ch2 class=\"abz-seo-product\"\u003eGround Silica\u003c\/h2\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eSIL-CO-SIL\u003csup\u003e®\u003c\/sup\u003e Ground Silica\u003c\/span\u003e products are produced from high purity silica, precision ground from 125 to 45 micron topsize. Our ground silicas are inherently inert, bright white, with low moisture and are at least 99.5% Si0\u003csub\u003e2\u003c\/sub\u003e.\u003c\/p\u003e\n\u003cp\u003eFLINT - (SiO2) (m.p. 3119o F\/1715o C) is the dark porous variety of chert that contains organic matter (chert is a hard, extremely dense, dull to semi-glossy sedimentary rock which is microcrystalline to cryptocrystalline quartz). True flint is very fine (cryptocrystalline) hydrated silica (1% molecular bound water) and is less dense than Quartz Sand due to a fine porous structure. The name flint is a carry over from England and France in which the true flints were prepared by calcination and grinding. Many geologists and archeologists suggest that the term flint be discarded or used only to identify artifacts of prehistoric humans (see also Silica).\u003c\/p\u003e\n\u003cp\u003eSILICA - SiO2 (m.p. 3119oF\/1715oC) is second only to clay in significance as a ceramic material, and it is the most abundant mineral in the earth’s crust. The principal siliceous materials are: Crystalline Quartz, Quartzite, Sandstone, Silica Sand, “Organic” and Amorphous Silica: including Flint and Diatomaceous Earth. Silica is frequently referred to as “Potter’s Flint” and is often just ground sandstone. It is used interchangeably with Quartz. Silica or Quartz is used in clay bodies to modify shrinkage, porosity, and strength (these modifications are affected by particle size and crystallinity). Quartz has a phase transition at 1063o F\/573o C, i.e. the Quartz inversion. Upon firing, this inversion occurs rapidly and results in volume expansion, which can lead to firing cracks in clay bodies high in Free Quartz. In glazes, Silica is the most common glass former. It serves to control the fusibility and viscosity, which are dependent on the amount of Silica in the glaze. Typical mesh size of 200 (\u0026gt;74 microns), 325 (\u0026gt; 45 microns), and 400 (\u0026gt;30 microns) are offer varing applications in clay bodies and glazes. The coarser 200 mesh helps to control shrinkage while the finer 325 and 400 mesh are useful in glazes for their reactivity and ease of going into solution.\u003cbr\u003e\u003cimg style=\"width: 394px;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/flint-silcosil75-specs.jpg?v=1684313196\" border=\"0px\" alt=\"Flint sil-co-sil specs\" align=\"\"\u003e\u003c\/p\u003e","brand":"Sheffield Pottery","offers":[{"title":"5 Pounds","offer_id":67286305997171,"sku":"RMFLI200-5","price":10.0,"currency_code":"USD","in_stock":true},{"title":"10 Pounds","offer_id":67286306029939,"sku":"RMFLI200","price":19.0,"currency_code":"USD","in_stock":true},{"title":"25 Pounds","offer_id":67286306062707,"sku":"RMFLI200-25","price":45.0,"currency_code":"USD","in_stock":true},{"title":"50 Pounds","offer_id":45113709822274,"sku":"RMFLI20050","price":45.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/white-RMTITDIO-2T_7d43628e-76d0-43cc-97ec-4f0bcbee1cc7.jpg?v=1724092681"},{"product_id":"flint-325m-sil-co-sil-52-325-mesh-50-pound-bag-rmfli32550","title":"Flint 325 Mesh (Sil-Co-Sil 52)","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. Color, strength, particle size and chemistry 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 use this material in a glaze, slip or clay body of any size, mix a small test batch, fire it on your own clay in your own kiln, and check the results.\u003c\/p\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2 class=\"abz-seo-product\"\u003eFLINT 325M \/ SIL-CO-SIL 52\u003c\/h2\u003e\n\u003ch2 class=\"abz-seo-product\"\u003eGround Silica\u003c\/h2\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eSIL-CO-SIL\u003csup\u003e®\u003c\/sup\u003e Ground Silica\u003c\/span\u003e products are produced from high purity silica, precision ground from 125 to 45 micron topsize. Our ground silicas are inherently inert, bright white, with low moisture and are at least 99.5% Si0\u003csub\u003e2\u003c\/sub\u003e.\u003c\/p\u003e\n\u003cp\u003eFLINT - (SiO2) (m.p. 3119o F\/1715o C) is the dark porous variety of chert that contains organic matter (chert is a hard, extremely dense, dull to semi-glossy sedimentary rock which is microcrystalline to cryptocrystalline quartz). True flint is very fine (cryptocrystalline) hydrated silica (1% molecular bound water) and is less dense than Quartz Sand due to a fine porous structure. The name flint is a carry over from England and France in which the true flints were prepared by calcination and grinding. Many geologists and archeologists suggest that the term flint be discarded or used only to identify artifacts of prehistoric humans (see also Silica).\u003c\/p\u003e\n\u003cp\u003eSILICA - SiO2 (m.p. 3119oF\/1715oC) is second only to clay in significance as a ceramic material, and it is the most abundant mineral in the earth’s crust. The principal siliceous materials are: Crystalline Quartz, Quartzite, Sandstone, Silica Sand, “Organic” and Amorphous Silica: including Flint and Diatomaceous Earth. Silica is frequently referred to as “Potter’s Flint” and is often just ground sandstone. It is used interchangeably with Quartz. Silica or Quartz is used in clay bodies to modify shrinkage, porosity, and strength (these modifications are affected by particle size and crystallinity). Quartz has a phase transition at 1063o F\/573o C, i.e. the Quartz inversion. Upon firing, this inversion occurs rapidly and results in volume expansion, which can lead to firing cracks in clay bodies high in Free Quartz. In glazes, Silica is the most common glass former. It serves to control the fusibility and viscosity, which are dependent on the amount of Silica in the glaze. Typical mesh size of 200 (\u0026gt;74 microns), 325 (\u0026gt; 45 microns), and 400 (\u0026gt;30 microns) are offer varying applications in clay bodies and glazes. The coarser 200 mesh helps to control shrinkage while the finer 325 and 400 mesh are useful in glazes for their reactivity and ease of going into solution.\u003cbr\u003e\u003cimg align=\"\" alt=\"Flint silcosil52 specs\" border=\"0px\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/flint-silcosil52-specs.jpg?v=1684313217\" style=\"width: 432px;\"\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Sheffield Pottery","offers":[{"title":"5 Pounds","offer_id":67286306095475,"sku":"RMFLI325-5","price":12.0,"currency_code":"USD","in_stock":true},{"title":"10 Pounds","offer_id":67286306128243,"sku":"RMFLI325","price":23.0,"currency_code":"USD","in_stock":true},{"title":"25 Pounds","offer_id":67286306161011,"sku":"RMFLI325-25","price":55.0,"currency_code":"USD","in_stock":true},{"title":"50 Pounds","offer_id":45113714049346,"sku":"RMFLI32550","price":54.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/FlintSilica325mF_1000x1000-transformed.jpg?v=1724426158"},{"product_id":"flint-400m-silcosil-40-50-pound-bag-rmfli40050","title":"Flint 400 Mesh (Min-U-Sil 40)","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. Color, strength, particle size and chemistry 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 use this material in a glaze, slip or clay body of any size, mix a small test batch, fire it on your own clay in your own kiln, and check the results.\u003c\/p\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003e\u003c\/span\u003eFLINT 400M \/ SILCOSIL 40 : 50 Pound Bag\u003cbr\u003e \u003cspan style=\"font-weight: bold;\"\u003eSIL-CO-SIL\u003csup\u003e®\u003c\/sup\u003e Ground Silica\u003c\/span\u003e products are produced from high purity silica, precision ground from 125 to 45 micron topsize. Our ground silicas are inherently inert, bright white, with low moisture and are at least 99.5% Si0\u003csub\u003e2\u003c\/sub\u003e.\u003c\/p\u003e\n\u003cp\u003eFLINT - (SiO2) (m.p. 3119o F\/1715o C) is the dark porous variety of chert that contains organic matter (chert is a hard, extremely dense, dull to semi-glossy sedimentary rock which is microcrystalline to cryptocrystalline quartz). True flint is very fine (cryptocrystalline) hydrated silica (1% molecular bound water) and is less dense than Quartz Sand due to a fine porous structure. The name flint is a carry over from England and France in which the true flints were prepared by calcination and grinding. Many geologists and archeologists suggest that the term flint be discarded or used only to identify artifacts of prehistoric humans (see also Silica).\u003c\/p\u003e\n\u003cp\u003eSILICA - SiO2 (m.p. 3119oF\/1715oC) is second only to clay in significance as a ceramic material, and it is the most abundant mineral in the earth’s crust. The principal siliceous materials are: Crystalline Quartz, Quartzite, Sandstone, Silica Sand, “Organic” and Amorphous Silica: including Flint and Diatomaceous Earth. Silica is frequently referred to as “Potter’s Flint” and is often just ground sandstone. It is used interchangeably with Quartz. Silica or Quartz is used in clay bodies to modify shrinkage, porosity, and strength (these modifications are affected by particle size and crystallinity). Quartz has a phase transition at 1063o F\/573o C, i.e. the Quartz inversion. Upon firing, this inversion occurs rapidly and results in volume expansion, which can lead to firing cracks in clay bodies high in Free Quartz. In glazes, Silica is the most common glass former. It serves to control the fusibility and viscosity, which are dependent on the amount of Silica in the glaze. Typical mesh size of 200 (\u0026gt;74 microns), 325 (\u0026gt; 45 microns), and 400 (\u0026gt;30 microns) are offer varing applications in clay bodies and glazes. The coarser 200 mesh helps to control shrinkage while the finer 325 and 400 mesh are useful in glazes for their reactivity and ease of going into solution.\u003cbr\u003e\u003cimg align=\"\" alt=\"Flint Sil co Sil Silica Specs\" border=\"0px\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/flint-silcosil-specs.jpg?v=1684313238\" style=\"width: 363px;\"\u003e\u003c\/p\u003e","brand":"Sheffield Pottery","offers":[{"title":"5 Pounds","offer_id":67286306226547,"sku":"RMFLI400-5","price":16.5,"currency_code":"USD","in_stock":true},{"title":"10 Pounds","offer_id":67286306259315,"sku":"RMFLI400","price":32.0,"currency_code":"USD","in_stock":true},{"title":"25 Pounds","offer_id":67286306292083,"sku":"RMFLI400-25","price":77.5,"currency_code":"USD","in_stock":true},{"title":"50 Pounds","offer_id":45113719554370,"sku":"RMFLI40050","price":76.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/products\/RMFLI40050-2.jpg?v=1683888611"},{"product_id":"sheffield-kiln-wash-5lb-bag-rmkilwas","title":"Sheffield Kiln Wash","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. Color, strength, particle size and chemistry 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 use this material in a glaze, slip or clay body of any size, mix a small test batch, fire it on your own clay in your own kiln, and check the results.\u003c\/p\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eDIRECTIONS FOR USE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eKiln wash is applied to kiln shelves to protect them from glaze drips. On a washed shelf, drips can be easily removed without gouging or marring the kiln shelf.\u003cbr\u003eMix the kiln shelf wash with water to a thin cream consistency. Apply only one coat at a time. Use a wide paintbrush or utility brush (a 2\" - 3\" wide, soft bristle brush generally works best). Three individually firedon coats of kiln wash are preferable.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAPPLYING KILN WASH\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eMake sure the floor of the kiln and the tops of the shelves are coated with kiln wash. This will protect these surfaces from melting glaze and ceramics.\u003c\/li\u003e\n\u003cli\u003eDo not coat the bottom or sides of the shelves.\u003c\/li\u003e\n\u003cli\u003eDo not apply the kiln shelf wash to the brick sides or element holders.\u003c\/li\u003e\n\u003cli\u003eApply the kiln wash to the thickness of a post card.\u003c\/li\u003e\n\u003cli\u003eThe only purpose of kiln shelf wash is to prevent any glaze that drips from a piece from sticking to the floor or shelves. This saves both the piece and the floor or shelves. If dripping should occur, simply remove dripping and cover the spot with new kiln wash.\u003c\/li\u003e\n\u003cli\u003eWhen you are applying kiln wash to your shelves for the first time, it helps to dampen the top of your shelves with a wet sponge or a water-filled spray bottle first. This makes the kiln wash go on easier and more evenly.\u003c\/li\u003e\n\u003cli\u003eFor the kiln wash to really protect the kiln shelves it is best to apply three separate coats. In addition it is best to fire each coating separately. (If you brush one coat on, let it dry and then brush on another, you could actually be brushing off the first in the process, so ideally each coat should be fired on). The shelf can be used while firing the kiln shelf wash on, so theoretically you would put one coat on, load the shelves and do your test firing of the kiln. The second coat would be fired on in the first bisque and the third coat in the second bisque or first glaze (whichever comes next). Fire at least to cone 018 - hot enough to give the kiln shelf wash enough adherence to the shelf to prevent it from coming off in the second coating. Note that some people get away fine without three firings of the kiln wash. However, we include this recommendation as a “best practice”.\u003c\/li\u003e\n\u003cli\u003eIf you notice that your kiln wash is flaking off, use a paint scraper (or something similar) to remove any loose bits, then reapply kiln wash. If glaze drips onto your shelf, use the paint scraper to pop the glaze drip off and clean up any loose areas around the area, then dab some more kiln shelf wash in the bare area.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003ePROGRAM TO QUICKLY DRY KILN WASH\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHere is a program that will dry the kiln shelf wash in a hurry:\u003cbr\u003eIn the Vary-Fire section:\u003cbr\u003ePress Enter Prog, Press '1'\u003cbr\u003ePress Enter, Press '1'\u003cbr\u003ePress Enter, Press '60'\u003cbr\u003ePress Enter, Press '200'\u003cbr\u003ePress Enter, Press '600' (for 6 hours, 400 for 4 hours, 800\u003cbr\u003efor 8 hours etc of hold time at 200 degrees)\u003cbr\u003ePress Enter, Press 9999\u003cbr\u003ePress Enter, Press START\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAPPLYING KILN WASH TO A DAWSON\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIf you have a Dawson kiln sitter, put kiln wash on thecone supports (not sensing rod) for accurate cone action. Clean off the old wash and reapply new washeach time you fire or when it begins to chip away.\u003cbr\u003e\u003c\/p\u003e","brand":"Sheffield Pottery","offers":[{"title":"1 Pound","offer_id":67289115328883,"sku":"RMKILWAS-1","price":3.65,"currency_code":"USD","in_stock":true},{"title":"5 Pounds","offer_id":45113730826562,"sku":"RMKILWAS","price":17.5,"currency_code":"USD","in_stock":true},{"title":"10 Pounds","offer_id":67289115361651,"sku":"RMKILWASH10LB","price":34.0,"currency_code":"USD","in_stock":true},{"title":"25 Pounds","offer_id":67289115394419,"sku":"RMKILWAS-25","price":82.5,"currency_code":"USD","in_stock":true},{"title":"50 Pounds","offer_id":67289115427187,"sku":"RMKILWAS-50","price":150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/Untitleddesign_26fc013c-be38-42b1-8123-6448b949ed8f.jpg?v=1696877234"},{"product_id":"kyanite-200-mesh-50-pound-bag-rmkya20050","title":"Kyanite 200 Mesh","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. Color, strength, particle size and chemistry 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 use this material in a glaze, slip or clay body of any size, mix a small test batch, fire it on your own clay in your own kiln, and check the results.\u003c\/p\u003e\u003c\/div\u003e\n\u003cspan\u003e\u003c\/span\u003eKYANITE 200M 50 pound bag: \u003cbr\u003ePlease call for bulk discounts.. thanks! \u003cbr\u003e\nKYANITE - Al2O3lSiO2 (m.p. 3300o F\/1800o C) is a non-plastic aluminosilicate and is typically not found in glazes. It can be added to clay bodies to stabilize shrinkage (due to its tendency to expand in firing) and improve strength. Its principal use is in the manufacturing of high temperature refractories for kiln bricks and furniture (see also Mullite).","brand":"Sheffield Pottery","offers":[{"title":"5 Pounds","offer_id":67288221286771,"sku":"RMKYA20050-5","price":7.25,"currency_code":"USD","in_stock":true},{"title":"10 Pounds","offer_id":67288221319539,"sku":"RMKYA20050-10","price":13.5,"currency_code":"USD","in_stock":true},{"title":"25 Pounds","offer_id":67288221352307,"sku":"RMKYA20050-25","price":31.25,"currency_code":"USD","in_stock":true},{"title":"50 Pounds","offer_id":45113731121474,"sku":"RMKYA20050","price":30.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/kaynite2M.jpg?v=1696879129"},{"product_id":"kyanite-35-mesh","title":"Kyanite 35 Mesh","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. Color, strength, particle size and chemistry 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 use this material in a glaze, slip or clay body of any size, mix a small test batch, fire it on your own clay in your own kiln, and check the results.\u003c\/p\u003e\u003c\/div\u003e\n\u003cspan\u003e\u003c\/span\u003eKYANITE 35M 50#","brand":"Sheffield Pottery","offers":[{"title":"5 Pounds","offer_id":67294149312883,"sku":"RMKYA3550-5","price":8.25,"currency_code":"USD","in_stock":true},{"title":"10 Pounds","offer_id":67294149345651,"sku":"RMKYA35100","price":15.5,"currency_code":"USD","in_stock":true},{"title":"25 Pounds","offer_id":67294149378419,"sku":"RMKYA3550-25","price":36.25,"currency_code":"USD","in_stock":true},{"title":"50 Pounds","offer_id":45113731318082,"sku":"RMKYA3550","price":36.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/kaynite2M_6d567d91-d06a-4674-a4d4-536439d521c2.jpg?v=1696879201"},{"product_id":"48-0-high-temp-silica-grog-rmmar48hts","title":"48\/0 High Temp Silica Grog","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. Color, strength, particle size and chemistry 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 use this material in a glaze, slip or clay body of any size, mix a small test batch, fire it on your own clay in your own kiln, and check the results.\u003c\/p\u003e\u003c\/div\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003ch2 class=\"abz-seo-product\"\u003e48\/0 High Temp Silica Grog : 10 pounds\u003c\/h2\u003e\n\u003cp\u003eSilica Grog is produced exclusively from virgin silica brick rejects. Advantages of this grog are price, \u003cbr\u003etightly controlled screen size, high purity and very consistent supply. \u003cbr\u003eThis grog is extremely refractory and will withstand temperatures above 3200 degrees F. \u003cbr\u003eThe mineralogy is low in quartz.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eTypical specifications \u003c\/b\u003e\u003cbr\u003ePCE 32 to 34\u003cbr\u003eColor Gray\u003cbr\u003eMoisture 0.5 % max, 0.1 % typical\u003cbr\u003eBulk Density 1.05 g\/cc\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eChemical Analysis: \u003c\/b\u003e\u003cbr\u003e Range Typical \u003cbr\u003eSi02 92.00 - 97.00 95.00 \u003cbr\u003eA102 0.50 - 1.50 0.80 \u003cbr\u003eFe203 0.50 - 1.50 0.70 \u003cbr\u003eCaO 2.30 - 3.50 2.80 \u003cbr\u003eMgO 0.09 - 0.50 0.10 \u003cbr\u003eTi02 0.01 - 0.50 0.20 \u003cbr\u003eAlkalies 0.03 - 0.10 0.07 \u003cbr\u003eLOI 0.30 - 0.50 0.40\u003cbr\u003e\u003c\/p\u003e","brand":"Sheffield Pottery","offers":[{"title":"5 Pounds","offer_id":67288215814515,"sku":"RMMAR48HTS-5","price":6.5,"currency_code":"USD","in_stock":true},{"title":"10 Pounds","offer_id":45113732825410,"sku":"RMMAR48HTS","price":12.0,"currency_code":"USD","in_stock":true},{"title":"25 Pounds","offer_id":67288215847283,"sku":"RMMAR48HTS-25","price":27.5,"currency_code":"USD","in_stock":true},{"title":"50 Pounds","offer_id":67288215880051,"sku":"RMMAR48HTS50","price":27.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/high-temp-silica-grog.jpg?v=1733323321"},{"product_id":"maryland-grog-20-48-medium-10-pounds-dry-rmmargro2048","title":"Maryland Grog 20\/48 Medium","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. Color, strength, particle size and chemistry 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 use this material in a glaze, slip or clay body of any size, mix a small test batch, fire it on your own clay in your own kiln, and check the results.\u003c\/p\u003e\u003c\/div\u003e\n\u003cspan\u003e\u003c\/span\u003eMARYLAND GROG 20\/48 MEDIUM","brand":"Sheffield Pottery","offers":[{"title":"5 Pounds","offer_id":67286306750835,"sku":"RMMARGRO2048-5","price":6.75,"currency_code":"USD","in_stock":true},{"title":"10 Pounds","offer_id":45113734824258,"sku":"RMMARGRO2048","price":12.5,"currency_code":"USD","in_stock":true},{"title":"25 Pounds","offer_id":67286306783603,"sku":"RMMARGRO2048-25","price":28.75,"currency_code":"USD","in_stock":true},{"title":"50 Pounds","offer_id":67286306816371,"sku":"RMMARGRO204850","price":28.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/large-grog_48mesh.jpg?v=1696882684"},{"product_id":"maryland-grog-48-fine-50-pound-bag-rmmargro4850","title":"Maryland Grog 48 Fine","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. Color, strength, particle size and chemistry 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 use this material in a glaze, slip or clay body of any size, mix a small test batch, fire it on your own clay in your own kiln, and check the results.\u003c\/p\u003e\u003c\/div\u003e\n\u003cspan\u003e\u003c\/span\u003eMARYLAND GROG 48 FINE : 50 Pound Bag.","brand":"Sheffield Pottery","offers":[{"title":"5 Pounds","offer_id":67286306586995,"sku":"RMMARGRO48-5","price":6.5,"currency_code":"USD","in_stock":true},{"title":"10 Pounds","offer_id":67286306619763,"sku":"RMMARGRO48-10","price":12.0,"currency_code":"USD","in_stock":true},{"title":"25 Pounds","offer_id":67286306652531,"sku":"RMMARGRO48-25","price":27.5,"currency_code":"USD","in_stock":true},{"title":"50 Pounds","offer_id":45113735741762,"sku":"RMMARGRO4850","price":27.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/large-grog_48mesh_630770e3-cce8-4980-a5bb-b196883788e0.jpg?v=1696882729"},{"product_id":"molochite-120m-white-grog-10-pounds-rmmol120","title":"Molochite 120 Mesh (White Grog)","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. Color, strength, particle size and chemistry 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 use this material in a glaze, slip or clay body of any size, mix a small test batch, fire it on your own clay in your own kiln, and check the results.\u003c\/p\u003e\u003c\/div\u003e\n\u003ch2 class=\"abz-seo-product\"\u003e\u003cstrong\u003eMolochite – Calcined Kaolin\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eAn alumino silicate refractory which is the standard for investment casting shell moulds. With a calcined Mullite conversion of about 90%, Molochite is unrivaled by other calcined kaolins. You will not find a grog with similar Mullite conversion or purity.\u003c\/p\u003e","brand":"Sheffield Pottery","offers":[{"title":"1 Pound","offer_id":67288217846131,"sku":"RMMOL120-1","price":4.35,"currency_code":"USD","in_stock":true},{"title":"5 Pounds","offer_id":67288217878899,"sku":"RMMOL120-5","price":21.0,"currency_code":"USD","in_stock":true},{"title":"10 Pounds","offer_id":45113735807298,"sku":"RMMOL120","price":41.0,"currency_code":"USD","in_stock":true},{"title":"25 Pounds","offer_id":67288217911667,"sku":"RMMOL120-25","price":100.0,"currency_code":"USD","in_stock":true},{"title":"55 Pounds","offer_id":67288217944435,"sku":"RMMOL12050","price":145.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/Untitleddesign_6_43940f0c-41da-452a-8456-aa3c087616aa.jpg?v=1696882923"},{"product_id":"molochite-200m-55-pound-bag-rmmol200","title":"Molochite 200 Mesh","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. Color, strength, particle size and chemistry 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 use this material in a glaze, slip or clay body of any size, mix a small test batch, fire it on your own clay in your own kiln, and check the results.\u003c\/p\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003e\u003c\/span\u003eMolochite 200M\u003c\/p\u003e","brand":"Sheffield Pottery","offers":[{"title":"1 Pound","offer_id":67294140236147,"sku":"RMMOL200-1","price":4.35,"currency_code":"USD","in_stock":true},{"title":"5 Pounds","offer_id":67294140268915,"sku":"RMMOL200-5","price":21.0,"currency_code":"USD","in_stock":true},{"title":"10 Pounds","offer_id":67294140301683,"sku":"RMMOL200-10","price":41.0,"currency_code":"USD","in_stock":true},{"title":"25 Pounds","offer_id":67294140334451,"sku":"RMMOL200-25","price":100.0,"currency_code":"USD","in_stock":true},{"title":"55 Pounds","offer_id":45113736102210,"sku":"RMMOL200","price":145.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/Untitleddesign_6_39c72578-11d3-416f-97fb-044a02b455eb.jpg?v=1696882963"},{"product_id":"pyrotrol-rmpyrotr50","title":"Pyrotrol 2253","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. Color, strength, particle size and chemistry 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 use this material in a glaze, slip or clay body of any size, mix a small test batch, fire it on your own clay in your own kiln, and check the results.\u003c\/p\u003e\u003c\/div\u003e\n\u003cspan\u003e\u003c\/span\u003ePYROTROL 2253: Please call for Bulk Pricing.CRYSTALLINE SILICA ALTERNATIVE\u003cbr\u003eDO YOU HAVE CONCERNS ABOUT THE HEALTH \u0026amp; SAFETY OF\u003cbr\u003eCRYSTALLINE SILICA IN YOUR WORKPLACE?\u003cbr\u003eIf you do have these concerns, RESCO Products’ ALKATROL and PYROTROL are proven\u003cbr\u003ealternatives to the use of silica flour in many ceramic applications. Whiteware, Dinnerware,\u003cbr\u003eSanitary Ware, Ceramic Tile, Brick, and other Ceramic industries have successfully used\u003cbr\u003eour PYROTROL and\/or ALKATROL in place of silica flour, and have reduced their\u003cbr\u003ecrystalline silica exposure.\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003eFires Very White in Color\u003c\/li\u003e\n\u003cli\u003eHigher Fired Strength\u003c\/li\u003e\n\u003cli\u003eLowers Thermal Expansion\u003c\/li\u003e\n\u003cli\u003eWidens Firing Range\u003c\/li\u003e\n\u003cli\u003eReduces Warping\u003c\/li\u003e\n\u003cli\u003eImproves Thermal Shock Resistance\u003c\/li\u003e\n\u003cli\u003eAlkali content of Alkatrol helps Lower\u003c\/li\u003e\n\u003cli\u003eFiring Temperature\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Resco","offers":[{"title":"5 Pounds","offer_id":67289115066739,"sku":"RMPYROTR-5","price":6.5,"currency_code":"USD","in_stock":true},{"title":"10 Pounds","offer_id":67289115099507,"sku":"RMPYROTR","price":12.0,"currency_code":"USD","in_stock":true},{"title":"25 Pounds","offer_id":67289115132275,"sku":"RMPYROTR-25","price":27.5,"currency_code":"USD","in_stock":true},{"title":"50 Pounds","offer_id":45113742033218,"sku":"RMPYROTR50","price":27.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/Pyrotrol_2253_270c18f4-a826-40b4-9025-33ae51337fab.jpg?v=1724426948"},{"product_id":"silicon-carbide-500m-black-50-pounds-rmsilcar500","title":"Silicon Carbide 500 Micron","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. Color, strength, particle size and chemistry 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 use this material in a glaze, slip or clay body of any size, mix a small test batch, fire it on your own clay in your own kiln, and check the results.\u003c\/p\u003e\u003c\/div\u003e\n\u003cspan\u003e\u003c\/span\u003e\u003ch2 class=\"abz-seo-product\"\u003eSilicon Carbide 500M Powder (Black)\u003c\/h2\u003e\u003ch2 class=\"abz-seo-product\"\u003e\u003c\/h2\u003eUsed to create glaze reduction effects in oxidation","brand":"Sheffield Pottery","offers":[{"title":"1 Pound","offer_id":45113746522434,"sku":"RMSILCAR500","price":9.85,"currency_code":"USD","in_stock":true},{"title":"5 Pounds","offer_id":67289115197811,"sku":"RMSILCAR500-5","price":46.75,"currency_code":"USD","in_stock":true},{"title":"10 Pounds","offer_id":67289115230579,"sku":"RMSILCAR500-10","price":89.0,"currency_code":"USD","in_stock":true},{"title":"25 Pounds","offer_id":67289115263347,"sku":"RMSILCAR500-25","price":211.25,"currency_code":"USD","in_stock":true},{"title":"50 Pounds","offer_id":67289115296115,"sku":"RMSILCAR50050","price":350.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/51pqJE1yLQL._AC_UF1000_1000_QL80_f04ffa79-36df-4505-9679-7308e125ac73.jpg?v=1791876723"},{"product_id":"silica-sand-rmsilsanf65","title":"Silica Sand F-65","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. Color, strength, particle size and chemistry 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 use this material in a glaze, slip or clay body of any size, mix a small test batch, fire it on your own clay in your own kiln, and check the results.\u003c\/p\u003e\u003c\/div\u003e\n\u003cp\u003eSILICA SAND F-65\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/silica-sand-specification-specs.jpg?v=1684313352\" border=\"0px\" alt=\"Silica Sand Specs specifications Product data\" align=\"right\"\u003e\u003c\/p\u003e\nAbout our 60 Silica Sand Offerings:\n\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eCoarse Grades\u003c\/span\u003e\u003cbr\u003eThese two and three screen round\u003cbr\u003egrain sands yield the highest\u003cbr\u003epermeabilities and contain the lowest\u003cbr\u003efines in the industry. They are ideal\u003cbr\u003efor lost foam process and any other\u003cbr\u003eapplication requiring the combination\u003cbr\u003eof high permeability and low fines.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eMedium Grades\u003c\/span\u003e\u003cbr\u003eOffering high permeabilities and\u003cbr\u003edensities due to excellent fines control,\u003cbr\u003ethese three and four screen round\u003cbr\u003egrain sands are ideal for most core\u003cbr\u003eand molding applications in iron, steel\u003cbr\u003eand non-ferrous foundries. They also\u003cbr\u003edemonstrate high strength in all binder\u003cbr\u003esystems.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eFine Grades\u003c\/span\u003e\u003cbr\u003eThese grades consist of rounded to\u003cbr\u003esub-angular grains which provide\u003cbr\u003ehigh strength and excellent\u003cbr\u003epermeabilities. They achieve\u003cbr\u003esuperior casting finishes in all binder\u003cbr\u003esystems and metals.\u003c\/p\u003e\n\u003cp\u003eDISCLAIMER: The information set forth in this sheet represents typical properties of the product described; the information and the typical values are not specifications. We make no representation or warranty concerning the Products, expressed or implied, by this Product Data Sheet.\u003c\/p\u003e\n\u003cp\u003eWARNING: The product contains crystalline silica - quartz, which can cause silicosis (an occupational lung disease) and lung cancer. For detailed information on the potential health effect of crystalline silica - quartz, see the Material Safety Data Sheet.\u003c\/p\u003e","brand":"Sheffield Pottery","offers":[{"title":"5 Pounds","offer_id":67286306357619,"sku":"RMSILSAN65-5","price":4.25,"currency_code":"USD","in_stock":true},{"title":"10 Pounds","offer_id":45113747734850,"sku":"RMSILSANF65","price":7.5,"currency_code":"USD","in_stock":true},{"title":"25 Pounds","offer_id":67286306390387,"sku":"RMSILSAN65-25","price":16.25,"currency_code":"USD","in_stock":true},{"title":"50 Pounds","offer_id":67286306423155,"sku":"RMSILSANF6550","price":32.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/SS-65.jpg?v=1739195536"},{"product_id":"thermal-ceramics-k-bond-wet-kiln-cement-55-pounds-tckbond55","title":"Thermal Ceramics K-Bond Wet Kiln Cement: 55 Pounds","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. Consistency, bond strength and firing behavior can change from one batch to the next and from one supplier to another, even when the name on the bag stays the same. Before you use it on your kiln, try a small test joint, dry and fire it, and check the results.\u003c\/p\u003e\u003c\/div\u003e\n\u003ch2 class=\"abz-seo-product\"\u003eTHERMAL CERAMICS K-BOND WET KILN CEMENT:: 55 Pounds\u003c\/h2\u003e\n\u003cp\u003eTHERMAL CERAMICS K-BOND WET KILN CEMENT: 55 POUNDS from Sheffield Pottery Ceramic Supply is used for kiln building and repair. Bulk discounts available. Please contact us to arrange for economical delivery of large quantities.\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\n\u003cp\u003e\u003cb\u003eThermal Ceramics mortars will provide the convenience you want with the performance you need for practically every high temperature refractory application. K-Bond Mortar has an extra smooth, creamy consistency plus excellent tackiness to brick surfaces.\u003c\/b\u003e\u003cbr\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/tc-k-bond.jpg?v=1684319706\" border=\"0\" alt=\"Thermal Ceramics KBond High Temp Cement\" align=\"\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Thermal Ceramics","offers":[{"title":"Default Title","offer_id":45114758332738,"sku":"TCKBOND55","price":119.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/products\/TCKBOND55-2.jpg?v=1683892581"},{"product_id":"silica-sand-f-12-50-pounds","title":"Silica Sand F-12 :  50 Pounds","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. Color, strength, particle size and chemistry 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 use this material in a glaze, slip or clay body of any size, mix a small test batch, fire it on your own clay in your own kiln, and check the results.\u003c\/p\u003e\u003c\/div\u003e\n\u003cp\u003eSILICA SAND F-12 \u003cimg align=\"right\" alt=\"Silica Sand Specs specifications Product data\" border=\"0px\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/silica-sand-specification-specs.jpg?v=1684313352\"\u003eAbout our Silica Sand Offerings:\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eCoarse Grades\u003c\/span\u003e\u003cbr\u003eThese two and three screen round\u003cbr\u003egrain sands yield the highest\u003cbr\u003epermeabilities and contain the lowest\u003cbr\u003efines in the industry. They are ideal\u003cbr\u003efor lost foam process and any other\u003cbr\u003eapplication requiring the combination\u003cbr\u003eof high permeability and low fines.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eMedium Grades\u003c\/span\u003e\u003cbr\u003eOffering high permeabilities and\u003cbr\u003edensities due to excellent fines control,\u003cbr\u003ethese three and four screen round\u003cbr\u003egrain sands are ideal for most core\u003cbr\u003eand molding applications in iron, steel\u003cbr\u003eand non-ferrous foundries. They also\u003cbr\u003edemonstrate high strength in all binder\u003cbr\u003esystems.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eFine Grades\u003c\/span\u003e\u003cbr\u003eThese grades consist of rounded to\u003cbr\u003esub-angular grains which provide\u003cbr\u003ehigh strength and excellent\u003cbr\u003epermeabilities. They achieve\u003cbr\u003esuperior casting finishes in all binder\u003cbr\u003esystems and metals.\u003c\/p\u003e\n\u003cp\u003eDISCLAIMER: The information set forth in this sheet represents typical properties of the product described; the information and the typical values are not\u003cbr\u003especifications. We make no representation or warranty concerning the Products, expressed or implied, by this Product Data Sheet.\u003c\/p\u003e\n\u003cp\u003eWARNING: The product contains crystalline silica - quartz, which can cause silicosis (an occupational lung disease) and lung cancer. For detailed\u003cbr\u003einformation on the potential health effect of crystalline silica - quartz, see the Material Safety Data Sheet.\u003c\/p\u003e","brand":"Sheffield Pottery","offers":[{"title":"Default Title","offer_id":52490866688371,"sku":"RMSILSANF-12","price":26.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/SS-65.jpg?v=1739195536"},{"product_id":"kyanite-325-mesh","title":"Kyanite 325 Mesh","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. Color, strength, particle size and chemistry 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 use this material in a glaze, slip or clay body of any size, mix a small test batch, fire it on your own clay in your own kiln, and check the results.\u003c\/p\u003e\u003c\/div\u003e\n\u003cp\u003eKyanite ground to 325 mesh, a fine powder. We also carry Kyanite 35 Mesh and Kyanite 200 Mesh.\u003c\/p\u003e\u003cblockquote\u003e\u003cp\u003e\u003cstrong\u003eTest before you use it, at any scale.\u003c\/strong\u003e Raw materials are mined, and they are not consistent. Color, strength, particle size and chemistry 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 use this material in a glaze, slip or clay body of any size, mix a small test batch, fire it on your own clay in your own kiln, and check the results.\u003c\/p\u003e\u003c\/blockquote\u003e","brand":"Sheffield Pottery","offers":[{"title":"5 Pounds","offer_id":67294153343347,"sku":"RMKYA32550-5","price":7.25,"currency_code":"USD","in_stock":true},{"title":"10 Pounds","offer_id":67294153376115,"sku":"RMKYA32550-10","price":13.5,"currency_code":"USD","in_stock":true},{"title":"25 Pounds","offer_id":67294153408883,"sku":"RMKYA32550-25","price":31.25,"currency_code":"USD","in_stock":true},{"title":"50 Pounds","offer_id":67294153441651,"sku":"RMKYA32550","price":31.0,"currency_code":"USD","in_stock":true}]}],"url":"https:\/\/www.sheffield-pottery.com\/collections\/raw-materials-silica-grogs-and-refractories.oembed","provider":"Sheffield Pottery Inc.","version":"1.0","type":"link"}