{"title":"Gypsum - Plaster","description":"","products":[{"product_id":"hydrostone","title":"Hydro-Stone®","description":"\u003cp\u003eAVAILABLE IN 5, 25, AND 50LB OPTIONS IN THE DROP-DOWN\u003c\/p\u003e\n\u003cp\u003eUSG Hydro-Stone® Brand Gypsum Cement is an excellent product for manufacturing solid cast architectural, art novelty and statuary products. USG Hydro-Stone Gypsum Cement is extremely hard, has high compressive strength, and has high water absorption resistance while giving extremely fine detail duplication.\u003c\/p\u003e\n\u003cp\u003eMIXING INSTRUCTIONS\u003c\/p\u003e\n\u003cp\u003eUse potable water at temperatures between 70 °F (21 °C) and 100 °F (38 °C). Because variations in slurry (USG Hydro-Stone Gypsum Cement and water mixture) temperature produce variations in set time, it is important to keep both the USG Hydro-Stone Gypsum Cement and water in a stable temperature environment prior to use. \u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFeatures a heavy, syrupy consistency, ideal for pouring into solid models or patterns (and making it ideal for filling multiple molds simultaneously)\u003c\/li\u003e\n\u003cli\u003eAdapts to most flexible moulding compounds, due to its high absorption resistance\u003c\/li\u003e\n\u003cli\u003eSets in 17-20 minutes, after machine mixing\u003c\/li\u003e\n\u003cli\u003eRequires 32 parts water by weight per 100 parts plaster.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWeigh both the USG Hydro-Stone Gypsum Cement and the water prior to use for each mix. The water to Hydro-Stone Gypsum Cement ratio is critical because it governs the strength and the density of the final cast.\u003c\/p\u003e\n\u003cp\u003eSift or strew USG Hydro-Stone Gypsum Cement into the water slowly and evenly. Do not drop large amounts of USG Hydro-Stone Gypsum Cement directly into the water as proper soaking of the USG Hydro-Stone Gypsum Cement may not occur. USG Hydro-Stone Gypsum Cement should be fully dispersed in the water prior to mixing. Small batches require less soaking time than large batches. See USG IG503 Plaster Mixing Procedures for specific soaking instructions.\u003c\/p\u003e\n\u003cp\u003eMixing USG Hydro-Stone Gypsum Cement slurry is one of the most important steps in producing USG Hydro-Stone Gypsum Cement casts with maximum strength, absorption, hardness and other important properties.\u003c\/p\u003e\n\u003cp\u003eMechanically mixed slurries develop uniform casts with optimal strengths. USG Hydro-Stone\u003cbr\u003eGypsum Cement can be mechanically mixed through both batch and continuous processes. Proper blade and bucket dimensions are important for obtaining the best batch mix (see USG IG503 Plaster Mixing Procedures for details).\u003c\/p\u003e\n\u003cp\u003eLonger mixing times result in higher mold strength and shorter set times.\u003c\/p\u003e\n\u003cp\u003ePOURING\u003c\/p\u003e\n\u003cp\u003eTo prevent air entrainment and provide a uniform, smooth surface, careful pouring of USG Hydro-Stone Gypsum Cement slurry is necessary. Agitation\/vibration of the filled mold is a further step used to prevent air at or near the mold surface. Whenever possible, USG Hydro-Stone Gypsum Cement slurry should be poured carefully in the deepest area so that the slurry flows evenly across the surface of the case mold.\u003c\/p\u003e\n\u003cp\u003ePouring a large amount of slurry directly on the face of the case mold may result in slight\u003cbr\u003edensification of the USG Hydro-Stone Gypsum Cement mold at the point where it strikes the surface of the case. This produces a hard spot, giving uneven absorption.\u003c\/p\u003e\n\u003cp\u003eDRYING\u003c\/p\u003e\n\u003cp\u003eAll casts should be dried as quickly as is safely possible after manufacture so that maximum\u003cbr\u003ephysical properties can develop. Dry to a constant weight.\u003c\/p\u003e\n\u003cp\u003eThe best drying rooms or ovens provide 1) uniform and rapid circulation (minimum of 15-30 fps (4.6-9.1 mps)) of air with no “dead spots” having little or no air movement, 2) equal temperatures throughout the entire area, and 3) provisions for exhausting a portion of the air while replacing it with fresh air. High humidity surrounding the drying room or oven inhibits drying efficiency because the air pulled into the room is incapable of picking up much moisture from the molds.\u003c\/p\u003e\n\u003cp\u003eThe maximum temperature at which USG Hydro-Stone Gypsum Cement molds are safe from calcination is 120 °F (49 °C). With substantial free water in the mold, a higher drying temperature can be used without difficulty. As drying progresses, the temperature must be reduced to prevent calcination. Before removing molds from the dryer, the temperature should approach that of the area around the dryer to prevent thermal shock. See IG502 Drying Plaster Casts for additional information.\u003c\/p\u003e\n\u003cp\u003eSTORAGE AND USE\u003c\/p\u003e\n\u003cp\u003eWhen properly used, USG Hydro-Stone Gypsum Cement is easy to work with and complies with the federal Labeling of Hazardous Art Materials Act, 12 U.S.C. Section 1277 and ASTM D4236. Keep indoors at temperatures between 65 °F - 75 °F (18 °C - 24 °C) and 45% - 55% RH. Do not stack more than two pallets high. Keep from drafts. Rotate stock. USG Hydro-Stone Gypsum Cement should be used within 6 months of the manufacturing date located on the package. Always follow handling and use directions and safety warnings on the package.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.usg.com\/content\/dam\/USG_Marketing_Communications\/united_states\/sds\/usg-hydro-stone-gypsum-cement-sds-en-52000000012.pdf\" rel=\"noopener\" target=\"_blank\"\u003eSDS\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"USG","offers":[{"title":"5lb","offer_id":48015589507387,"sku":"47400","price":20.0,"currency_code":"USD","in_stock":true},{"title":"25lb","offer_id":48015589441851,"sku":"47400A","price":39.0,"currency_code":"USD","in_stock":false},{"title":"50lb","offer_id":48015589474619,"sku":"47400B","price":57.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/7539\/6411\/files\/hydrostone.jpg?v=1710986946"},{"product_id":"ultracal-30","title":"Ultracal® 30","description":"\u003cp\u003eAVAILABLE IN 5, 25, AND 50LB OPTIONS IN THE DROPDOWN\u003c\/p\u003e\n\u003cp\u003eUSG Ultracal® Brand 30 Gypsum Cement is designed for the patternmaking industry as the\u003cbr\u003eultimate gypsum cement tooling medium. When extreme accuracy and greater surface hardness\u003cbr\u003eare required (as in duplicator models), use USG Ultracal 30 Gypsum Cement. It provides extremely\u003cbr\u003elow expansion properties, gradual set and a long period of plasticity.\u003cbr\u003eIdeal for splash-casting molds and models for phenolic, polyester and epoxy resins, USG Ultracal 30\u003cbr\u003eGypsum Cement is water soluble – there is no need for organic solvents for cleanup. USG Ultracal\u003cbr\u003e30 Gypsum Cement is noncombustible. When properly used, USG Ultracal 30 Gypsum Cement is\u003cbr\u003eeasy to work with. Always follow handling and use directions and safety warnings on the package.\u003c\/p\u003e\n\u003cp\u003eMIXING INSTRUCTIONS\u003c\/p\u003e\n\u003cp\u003eUse potable water at temperatures between 70 °F (21 °C) and 100 °F (38 °C). Because variations\u003cbr\u003ein slurry (USG Ultracal 30 Gypsum Cement and water mixture) temperature produce variations in\u003cbr\u003eset time, it is important to keep both the USG Ultracal 30 Gypsum Cement and water in a stable\u003cbr\u003etemperature environment prior to use. The higher the temperature of the slurry, the shorter the set\u003cbr\u003etime. Conversely, the lower the temperature of the slurry, the longer the set time.\u003c\/p\u003e\n\u003cp\u003eWeigh both the USG Ultracal 30 Gypsum Cement and the water prior to use for each mix. The\u003cbr\u003ewater-to-USG Ultracal 30 Gypsum Cement ratio is critical because it governs the strength and the\u003cbr\u003edensity of the final cast.\u003c\/p\u003e\n\u003cp\u003eSift or strew USG Ultracal 30 Gypsum Cement into the water slowly and evenly. Do not drop large\u003cbr\u003eamounts of USG Ultracal 30 Gypsum Cement directly into the water as proper soaking of the\u003cbr\u003eUSG Ultracal 30 Gypsum Cement may not occur. USG Ultracal 30 Gypsum Cement should be fully\u003cbr\u003edispersed in the water prior to mixing. Small batches require less soaking time than large batches.\u003cbr\u003eSee USG IG503 Plaster Mixing Procedures for specific soaking instructions.\u003c\/p\u003e\n\u003cp\u003eMixing USG Ultracal 30 Gypsum Cement slurry is one of the most important steps in producing\u003cbr\u003eUSG Ultracal 30 Gypsum Cement casts with optimal strength, absorption, hardness and other\u003cbr\u003eimportant properties.\u003c\/p\u003e\n\u003cp\u003eMechanically mixed slurries develop uniform casts with optimal strengths. USG Ultracal 30 Gypsum\u003cbr\u003eCement can be mechanically mixed through both batch and continuous processes. Proper blade\u003cbr\u003eand bucket dimensions are important for obtaining the best batch mix (see USG IG503 Plaster\u003cbr\u003eMixing Procedures for details).\u003c\/p\u003e\n\u003cp\u003eLonger mixing times result in higher mold strength and shorter set times.\u003c\/p\u003e\n\u003cp\u003ePOURING\u003c\/p\u003e\n\u003cp\u003eTo prevent air entrainment and provide a uniform, smooth surface, careful pouring of USG\u003cbr\u003eUltracal 30 Gypsum Cement slurry is necessary. Agitation of the filled mold is a further step used\u003cbr\u003eto prevent air at or near the mold surface. Whenever possible, USG Ultracal 30 Gypsum Cement\u003cbr\u003eslurry should be poured carefully in the deepest area so that the slurry flows evenly across the\u003cbr\u003esurface of the case mold.\u003c\/p\u003e\n\u003cp\u003ePouring a large amount of slurry directly on the face of the case mold may result in slight\u003cbr\u003edensification of the USG Ultracal 30 Gypsum Cement mold at the point where it strikes the surface\u003cbr\u003eof the case. This produces a hard spot, giving uneven absorption.\u003c\/p\u003e\n\u003cp\u003eDRYING\u003c\/p\u003e\n\u003cp\u003eAll casts should be dried as quickly as is safely possible after manufacture so that maximum\u003cbr\u003ephysical properties can develop. Dry to a constant weight.\u003c\/p\u003e\n\u003cp\u003eThe best drying rooms or ovens provide 1) uniform and rapid circulation (minimum of 15-30 fps\u003cbr\u003e(4.6-9.1 mps)) of air with no “dead spots” having little or no air movement, 2) equal temperatures\u003cbr\u003ethroughout the entire area, and 3) provisions for exhausting a portion of the air while replacing\u003cbr\u003eit with fresh air. High humidity surrounding the drying room or oven inhibits drying efficiency\u003cbr\u003ebecause the air pulled into the room is incapable of picking up much moisture from the molds.\u003c\/p\u003e\n\u003cp\u003eThe maximum temperature at which USG Ultracal 30 Gypsum Cement molds are safe from\u003cbr\u003ecalcination is 120 °F (49 °C). With substantial free water in the mold, a higher drying temperature\u003cbr\u003ecan be used initially without difficulty. As drying progresses, the temperature must be reduced to\u003cbr\u003eprevent calcination. Before removing molds from the dryer, the temperature should approach that\u003cbr\u003eof the area around the dryer to prevent thermal shock.\u003c\/p\u003e\n\u003cp\u003eSTORAGE AND USE\u003c\/p\u003e\n\u003cp\u003eWhen properly used, USG Ultracal 30 Gypsum Cement is easy to work with. Keep indoors at\u003cbr\u003etemperatures between 65 °F - 75 °F (18 °C - 24 °C) and 45% - 55% RH. Do not stack more than\u003cbr\u003etwo pallets high. Keep from drafts. Rotate stock. USG Ultracal 30 Gypsum Cement should be used\u003cbr\u003ewithin 6 months of the manufacturing date located on the package. Always follow handling and\u003cbr\u003euse directions and safety warnings on the package.\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.usg.com\/content\/dam\/USG_Marketing_Communications\/united_states\/sds\/usg-ultracal-30-gypsum-cement-sds-en-52000000118.pdf\" target=\"_blank\"\u003eSDS\u003c\/a\u003e\u003c\/p\u003e","brand":"USG","offers":[{"title":"5lb","offer_id":48015589867835,"sku":"47900","price":20.0,"currency_code":"USD","in_stock":false},{"title":"25lb","offer_id":48015589802299,"sku":"47900A","price":38.0,"currency_code":"USD","in_stock":false},{"title":"50lb","offer_id":48015589835067,"sku":"47900B","price":52.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/7539\/6411\/files\/ultracal-30.jpg?v=1710986950"},{"product_id":"moulding-plaster","title":"No. 1 Moulding Plaster","description":"\u003cp\u003eAVAILABLE IN 5, 25, AND 50LB OPTIONS IN THE DROPDOWN\u003c\/p\u003e\n\u003cp\u003eUSG No. 1 Moulding Plaster is a high purity general purpose plaster that can be used in a wide variety\u003cbr\u003eof applications including architectural ornamentation and dental use. The physical properties can\u003cbr\u003ebe varied depending upon the desired end use, while the use consistency can vary from a practical\u003cbr\u003erange of 63 lbs. water\/100 lbs. of plaster (29 kg water\/45 kg plaster) to as high as 70 lbs. water\/\u003cbr\u003e100 lbs. of plaster (32 kg water\/45 kg plaster).\u003c\/p\u003e\n\u003cp\u003eUSG No. 1 Moulding Plaster is noncombustible. With a coefficient of thermal conductivity (k) of\u003cbr\u003e0.25 to 4.0 depending on density and additives, USG No. 1 Moulding Plaster can help to provide a\u003cbr\u003ehigh degree of fire resistance. When dry, USG No. 1 Moulding Plaster is electrically nonconductive\u003cbr\u003eand makes a good insulating medium.\u003c\/p\u003e\n\u003cp\u003eMIXING INSTRUCTIONS\u003c\/p\u003e\n\u003cp\u003eUse potable water at temperatures between 70 °F (21 °C) and 100 °F (38 °C). Because variations\u003cbr\u003ein slurry (USG No. 1 Moulding Plaster and water mixture) temperature produce variations in set\u003cbr\u003etime, it is important to keep both the USG No. 1 Moulding Plaster and water in a stable temperature\u003cbr\u003eenvironment prior to use. The higher the temperature of the slurry, the shorter the set time.\u003cbr\u003eConversely, the lower the temperature of the slurry, the longer the set time.\u003c\/p\u003e\n\u003cp\u003eWeigh both the USG No. 1 Moulding Plaster and the water prior to use for each mix. The water-to-\u003cbr\u003eUSG No. 1 Moulding Plaster ratio is critical because it governs the strength and the density of the\u003cbr\u003efinal cast.\u003c\/p\u003e\n\u003cp\u003eSift or strew USG No. 1 Moulding Plaster into the water slowly and evenly. Do not drop large\u003cbr\u003eamounts of USG No. 1 Moulding Plaster directly into the water as proper soaking of the USG No. 1\u003cbr\u003eMoulding Plaster may not occur. USG No. 1 Moulding Plaster should be fully dispersed in the water\u003cbr\u003eprior to mixing. Small batches require less soaking time than large batches. See USG IG503 Plaster\u003cbr\u003eMixing Procedures for specific soaking instructions.\u003c\/p\u003e\n\u003cp\u003eMixing USG No. 1 Moulding Plaster slurry is one of the most important steps in producing USG\u003cbr\u003eNo. 1 Moulding Plaster casts with maximum strength, absorption, hardness and other important\u003cbr\u003eproperties.\u003c\/p\u003e\n\u003cp\u003eMechanically mixed slurries develop uniform casts with optimal strengths. USG No. 1 Moulding\u003cbr\u003ePlaster can be mechanically mixed through both batch and continuous processes. Proper blade\u003cbr\u003eand bucket dimensions are important for obtaining the best batch mix (see USG IG503 Plaster\u003cbr\u003eMixing Procedures for details).\u003c\/p\u003e\n\u003cp\u003eLonger mixing times result in higher mold strength and shorter set times.\u003c\/p\u003e\n\u003cp\u003ePOURING\u003c\/p\u003e\n\u003cp\u003eTo prevent air entrainment and provide a uniform, smooth surface, careful pouring of USG No. 1\u003cbr\u003eMoulding Plaster slurry is necessary. Agitation\/vibration of the filled mold is a further step used\u003cbr\u003eto prevent air at or near the mold surface. Whenever possible, USG No. 1 Moulding Plaster slurry\u003cbr\u003eshould be poured carefully in the deepest area so that the slurry flows evenly across the surface of\u003cbr\u003ethe case mold.\u003c\/p\u003e\n\u003cp\u003ePouring a large amount of slurry directly on the face of the case mold may result in slight\u003cbr\u003edensification of the USG No. 1 Moulding Plaster mold at the point where it strikes the surface of the\u003cbr\u003ecase. This produces a hard spot, giving uneven absorption.\u003c\/p\u003e\n\u003cp\u003eDRYING\u003c\/p\u003e\n\u003cp\u003eAll casts should be dried as quickly as is safely possible after manufacture so that maximum\u003cbr\u003ephysical properties can develop. Dry to a constant weight.\u003c\/p\u003e\n\u003cp\u003eThe best drying rooms or ovens provide 1) uniform and rapid circulation (minimum of 15-30 fps\u003cbr\u003e(4.6-9.1 mps)) of air with no “dead spots” having little or no air movement, 2) equal temperatures\u003cbr\u003ethroughout the entire area, and 3) provisions for exhausting a portion of the air while replacing\u003cbr\u003eit with fresh air. High humidity surrounding the drying room or oven inhibits drying efficiency\u003cbr\u003ebecause the air pulled into the room is incapable of picking up much moisture from the molds.\u003c\/p\u003e\n\u003cp\u003eThe maximum temperature at which USG No. 1 Moulding Plaster molds are safe from calcination is\u003cbr\u003e120 °F (49 °C). With substantial free water in the mold, a higher drying temperature can be used\u003cbr\u003ewithout difficulty. As drying progresses, the temperature must be reduced to prevent calcination.\u003cbr\u003eBefore removing molds from the dryer, the temperature should approach that of the area around\u003cbr\u003ethe dryer to prevent thermal shock. See IG502 Drying Plaster Casts for additional information.\u003c\/p\u003e\n\u003cp\u003eSTORAGE AND USE\u003c\/p\u003e\n\u003cp\u003eWhen properly used, USG No. 1 Moulding Plaster is easy to work with and complies with the federal\u003cbr\u003eLabeling of Hazardous Art Materials Act, 12 U.S.C. Section 1277 and ASTM D4236. Keep indoors\u003cbr\u003eat temperatures between 65 °F - 75 °F (18 °C - 24 °C) and 45% - 55% RH. Do not stack more than\u003cbr\u003etwo pallets high. Keep from drafts. Rotate stock. USG No. 1 Moulding Plaster should be used within\u003cbr\u003e6 months of the manufacturing date located on the package. Always follow handling and use\u003cbr\u003edirections and safety warnings on the package.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.usg.com\/content\/dam\/USG_Marketing_Communications\/united_states\/sds\/usg-no-1-moulding-plaster-sds-en-52000000006.pdf\" rel=\"noopener\" target=\"_blank\"\u003eSDS\u003c\/a\u003e\u003c\/p\u003e","brand":"USG","offers":[{"title":"5lb","offer_id":48015590850875,"sku":"47000","price":15.0,"currency_code":"USD","in_stock":false},{"title":"25lb","offer_id":48015590818107,"sku":"47000A","price":29.0,"currency_code":"USD","in_stock":true},{"title":"50lb","offer_id":48015590785339,"sku":"47000B","price":37.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/7539\/6411\/files\/moulding.jpg?v=1710986955"},{"product_id":"pottery-plaster","title":"No. 1 Pottery Plaster","description":"\u003cp\u003eAVAILABLE IN 5, 25, AND 50LB OPTIONS IN THE DROPDOWN\u003c\/p\u003e\n\u003cp\u003eUSG No. 1 Pottery Plaster is the best material available for sanitaryware and dinnerware casting.\u003cbr\u003eUSG No. 1 Pottery Plaster is formulated for long life and reduced breakage which leads to stronger\u003cbr\u003emolds. USG No. 1 Pottery Plaster is available with or without thermal shock additive\u003c\/p\u003e\n\u003cp\u003eMIXING INSTRUCTIONS\u003c\/p\u003e\n\u003cp\u003eUse potable water at temperatures between 70 °F (21 °C) and 100 °F (38 °C). Because variations\u003cbr\u003ein slurry (USG No. 1 Pottery Plaster and water mixture) temperature produce variations in set\u003cbr\u003etime, it is important to keep both the USG No. 1 Pottery Plaster and water in a stable temperature\u003cbr\u003eenvironment prior to use. The higher the temperature of the slurry, the shorter the set time.\u003cbr\u003eConversely, the lower the temperature of the slurry, the longer the set time.\u003c\/p\u003e\n\u003cp\u003eWeigh both the USG No. 1 Pottery Plaster and the water prior to use for each mix. The water-to-\u003cbr\u003eUSG No. 1 Pottery Plaster ratio is critical because it governs the strength and absorptivity of\u003cbr\u003ethe mold.\u003c\/p\u003e\n\u003cp\u003eSift or strew USG No. 1 Pottery Plaster into the water slowly and evenly. Do not drop large amounts\u003cbr\u003eof USG No. 1 Pottery Plaster directly into the water as proper soaking of the USG No. 1 Pottery\u003cbr\u003ePlaster may not occur. USG No. 1 Pottery Plaster should be fully dispersed in the water prior to\u003cbr\u003emixing. Small batches require less soaking time than large batches. See USG IG503 Plaster Mixing\u003cbr\u003eProcedures for specific soaking instructions.\u003c\/p\u003e\n\u003cp\u003eMixing USG No. 1 Pottery Plaster slurry is one of the most important steps in producing USG\u003cbr\u003eNo. 1 Pottery Plaster molds with maximum strength, absorption, hardness and other important\u003cbr\u003eproperties.\u003c\/p\u003e\n\u003cp\u003eMechanically mixed slurries develop uniform molds with optimal strengths. USG No. 1 Pottery\u003cbr\u003ePlaster can be mechanically mixed through both batch and continuous processes. Proper blade\u003cbr\u003eand bucket dimensions are important for obtaining the best batch mix (see USG IG503 Plaster\u003cbr\u003eMixing Procedures for details).\u003c\/p\u003e\n\u003cp\u003eLonger mixing times result in higher mold strength and shorter set times.\u003c\/p\u003e\n\u003cp\u003ePOURING\u003c\/p\u003e\n\u003cp\u003eTo prevent air entrainment and provide a uniform, smooth surface, careful pouring of USG No. 1\u003cbr\u003ePottery Plaster slurry is necessary. Agitation\/vibration of the filled mold is a further step used to\u003cbr\u003eprevent air at or near the mold surface. Whenever possible, USG No. 1 Pottery Plaster slurry should\u003cbr\u003ebe poured carefully in the deepest area so that the slurry flows evenly across the surface of the\u003cbr\u003ecase mold.\u003c\/p\u003e\n\u003cp\u003ePouring a large amount of slurry directly on the face of the case mold may result in slight\u003cbr\u003edensification of the USG No. 1 Pottery Plaster mold at the point where it strikes the surface of the\u003cbr\u003ecase. This produces a hard spot, giving uneven absorption.\u003c\/p\u003e\n\u003cp\u003eDRYING\u003c\/p\u003e\n\u003cp\u003eAll pottery molds should be dried as quickly as is safely possible after manufacture so that\u003cbr\u003emaximum physical properties can develop. Dry to a constant weight.\u003c\/p\u003e\n\u003cp\u003eThe best drying rooms or ovens provide 1) uniform and rapid circulation (minimum of 15-30 fps\u003cbr\u003e(4.6-9.1 mps)) of air with no “dead spots” having little or no air movement, 2) equal temperatures\u003cbr\u003ethroughout the entire area, and 3) provisions for exhausting a portion of the air while replacing\u003cbr\u003eit with fresh air. High humidity surrounding the drying room or oven inhibits drying efficiency\u003cbr\u003ebecause the air pulled into the room is incapable of picking up much moisture from the molds.\u003c\/p\u003e\n\u003cp\u003eThe maximum temperature at which USG No. 1 Pottery Plaster molds are safe from calcination is\u003cbr\u003e120 °F (49 °C). With substantial free water in the mold, a higher drying temperature can be used\u003cbr\u003ewithout difficulty. As drying progresses, the temperature must be reduced to prevent calcination.\u003cbr\u003eBefore removing molds from the dryer, the temperature should approach that of the area around\u003cbr\u003ethe dryer to prevent thermal shock. See IG502 Drying Plaster Casts for additional information.\u003c\/p\u003e\n\u003cp\u003eSTORAGE AND USE\u003c\/p\u003e\n\u003cp\u003eWhen properly used, USG No. 1 Pottery Plaster is easy to work with and complies with the federal\u003cbr\u003eLabeling of Hazardous Art Materials Act, 12 U.S.C. Section 1277 and ASTM D4236. Keep indoors\u003cbr\u003eat temperatures between 65 °F - 75 °F (18 °C - 24 °C) and 45% - 55% RH. Do not stack more than\u003cbr\u003etwo pallets high. Keep from drafts. Rotate stock. USG No. 1 Pottery Plaster should be used within\u003cbr\u003e6 months of the manufacturing date located on the package. Always follow handling and use\u003cbr\u003edirections and safety warnings on the package.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.usg.com\/content\/dam\/USG_Marketing_Communications\/united_states\/sds\/usg-no-1-pottery-plaster-sds-en-52000000003.pdf\" rel=\"noopener\" target=\"_blank\"\u003eSDS\u003c\/a\u003e\u003c\/p\u003e","brand":"USG","offers":[{"title":"5lb","offer_id":48015591866683,"sku":"47250","price":15.0,"currency_code":"USD","in_stock":false},{"title":"25lb","offer_id":48015591833915,"sku":"47250A","price":29.0,"currency_code":"USD","in_stock":false},{"title":"50lb","offer_id":48015591801147,"sku":"47250B","price":37.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/7539\/6411\/files\/pottery.jpg?v=1713651685"},{"product_id":"hydrocal-white","title":"Hydrocal® White","description":"\u003cp\u003eAVAILABLE IN 5, 25, AND 50LB OPTIONS IN THE DROPDOWN\u003c\/p\u003e\n\u003cp\u003eUSG Hydrocal® Brand White Gypsum Cement is a good multi-purpose product for people looking\u003cbr\u003eto upgrade from a standard plaster product to one that has a higher degree of hardness and\u003cbr\u003eimpact resistance. USG Hydrocal White Gypsum Cement is designed for solid and hollow casting\u003cbr\u003eand is ideal for giftware and lamp base applications. USG Hydrocal White Gypsum Cement is\u003cbr\u003ecompatible with numerous color pigments. \u003c\/p\u003e\n\u003cp\u003eMIXING INSTRUCTIONS\u003c\/p\u003e\n\u003cp\u003eUse potable water at temperatures between 70 °F (21 °C) and 100 °F (38 °C). Because variations in slurry (USG Hydrocal White Gypsum Cement and water mixture) temperature produce variations in set time, it is important to keep both the USG Hydrocal White Gypsum Cement and water in a stable temperature environment prior to use. The higher the temperature of the slurry, the shorter the set time. Conversely, the lower the temperature of the slurry, the longer the set time.\u003c\/p\u003e\n\u003cp\u003eWeigh both the USG Hydrocal White Gypsum Cement and the water prior to use for each mix. The water-to-USG Hydrocal White Gypsum Cement ratio is critical because it governs the strength and the density of the final cast. \u003cspan\u003e\u003cem\u003eRequires 45 parts water by weight per 100 parts plaster\u003c\/em\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eSift or strew USG Hydrocal White Gypsum Cement into the water slowly and evenly. Do not drop\u003cbr\u003elarge amounts of USG Hydrocal White Gypsum Cement directly into the water as proper soaking\u003cbr\u003eof the USG Hydrocal White Gypsum Cement may not occur. USG Hydrocal White Gypsum Cement\u003cbr\u003eshould be fully dispersed in the water prior to mixing. Small batches require less soaking time than\u003cbr\u003elarge batches. See USG IG503 Plaster Mixing Procedures for specific soaking instructions.\u003cbr\u003eMixing USG Hydrocal White Gypsum Cement slurry is one of the most important steps in\u003cbr\u003eproducing USG Hydrocal White Gypsum Cement casts with maximum strength, absorption,\u003cbr\u003ehardness and other important properties.\u003c\/p\u003e\n\u003cp\u003eMechanically mixed slurries develop uniform casts with optimal strengths. USG Hydrocal White\u003cbr\u003eGypsum Cement can be mechanically mixed through both batch and continuous processes. Proper\u003cbr\u003eblade and bucket dimensions are important for obtaining the best batch mix (see USG IG503\u003cbr\u003ePlaster Mixing Procedures for details).\u003c\/p\u003e\n\u003cp\u003eLonger mixing times result in higher mold strength and shorter set times.\u003c\/p\u003e\n\u003cp\u003ePOURING\u003c\/p\u003e\n\u003cp\u003eTo prevent air entrainment and provide a uniform, smooth surface, careful pouring of USG\u003cbr\u003eHydrocal White Gypsum Cement slurry is necessary. Agitation of the filled mold is a further step\u003cbr\u003eused to prevent air at or near the mold surface. Whenever possible, USG Hydrocal White Gypsum\u003cbr\u003eCement slurry should be poured carefully in the deepest area so that the slurry flows evenly across\u003cbr\u003ethe surface of the case mold.\u003c\/p\u003e\n\u003cp\u003ePouring a large amount of slurry directly on the face of the case mold may result in slight\u003cbr\u003edensification of the USG Hydrocal White Gypsum Cement mold at the point where it strikes the\u003cbr\u003esurface of the case. This produces a hard spot, giving uneven absorption.\u003c\/p\u003e\n\u003cp\u003eDRYING\u003c\/p\u003e\n\u003cp\u003eAll casts should be dried as quickly as is safely possible after manufacture so that maximum\u003cbr\u003ephysical properties can develop. Dry to a constant weight.\u003c\/p\u003e\n\u003cp\u003eThe best drying rooms or ovens provide 1) uniform and rapid circulation (minimum of 15-30 fps\u003cbr\u003e(4.6-9.1 mps)) of air with no “dead spots” having little or no air movement, 2) equal temperatures\u003cbr\u003ethroughout the entire area, and 3) provisions for exhausting a portion of the air while replacing\u003cbr\u003eit with fresh air. High humidity surrounding the drying room or oven inhibits drying efficiency\u003cbr\u003ebecause the air pulled into the room is incapable of picking up much moisture from the molds.\u003c\/p\u003e\n\u003cp\u003eThe maximum temperature at which USG Hydrocal White Gypsum Cement molds are safe from\u003cbr\u003ecalcination is 120 °F (49 °C). With substantial free water in the mold, a higher drying temperature\u003cbr\u003ecan be used without difficulty. As drying progresses, the temperature must be reduced to prevent\u003cbr\u003ecalcination. Before removing molds from the dryer, the temperature should approach that of the area\u003cbr\u003earound the dryer to prevent thermal shock. See IG502 Drying Plaster Casts for additional information.\u003c\/p\u003e\n\u003cp\u003eSTORAGE AND USE\u003c\/p\u003e\n\u003cp\u003eWhen properly used, USG Hydrocal White Gypsum Cement is easy to work with and complies with\u003cbr\u003ethe federal Labeling of Hazardous Art Materials Act, 12 U.S.C. Section 1277 and ASTM D4236. Keep\u003cbr\u003eindoors at temperatures between 65 °F - 75 °F (18 °C - 24 °C) and 45% - 55% RH. Do not stack\u003cbr\u003emore than two pallets high. Keep from drafts. Rotate stock. USG Hydrocal White Gypsum Cement\u003cbr\u003eshould be used within 6 months of the manufacturing date located on the package. Always follow\u003cbr\u003ehandling and use directions and safety warnings on the package.\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.usg.com\/content\/dam\/USG_Marketing_Communications\/united_states\/sds\/usg-hydrocal-white-gypsum-cement-sds-en-52000000092.pdf\" target=\"_blank\"\u003eSDS\u003c\/a\u003e\u003c\/p\u003e","brand":"USG","offers":[{"title":"5lb","offer_id":48015592849723,"sku":"47350","price":20.0,"currency_code":"USD","in_stock":false},{"title":"25lb","offer_id":48015592784187,"sku":"47350A","price":35.0,"currency_code":"USD","in_stock":false},{"title":"50lb","offer_id":48015592816955,"sku":"47350B","price":49.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/7539\/6411\/files\/gallery-large876657.jpg?v=1710986968"},{"product_id":"dental-impression-plaster","title":"Dental Impression Plaster","description":"\u003cp\u003eAVAILABLE IN 5, 25, AND 50LB OPTIONS IN THE DROPDOWN\u003c\/p\u003e\r\n\u003cp\u003eUSG Dental Plaster - Impression is designed for use in oral impression work where very fast set times\u003cbr\u003eare needed. Fast-setting USG Dental Plaster – Impression is easy to use and offers many applications\u003cbr\u003efor dental stones. Its set time can be altered by the use of accelerators or retarders. Water soluble,\u003cbr\u003eUSG Dental Plaster – Impression requires no organic solvents for cleanup.\u003c\/p\u003e\r\n\u003cp\u003eMIXING INSTRUCTIONS\u003c\/p\u003e\r\n\u003cp\u003eUse potable water at temperatures between 70 °F (21 °C) and 100 °F (38 °C). Because variations\u003cbr\u003ein slurry (USG Dental Plaster - Impression and water mixture) temperature produce variations in\u003cbr\u003eset time, it is important to keep both the USG Dental Plaster - Impression and water in a stable\u003cbr\u003etemperature environment prior to use. The higher the temperature of the slurry, the shorter the set\u003cbr\u003etime. Conversely, the lower the temperature of the slurry, the longer the set time.\u003c\/p\u003e\r\n\u003cp\u003eWeigh both the USG Dental Plaster - Impression and the water prior to use for each mix. The water-\u003cbr\u003eto-USG Dental Plaster - Impression ratio is critical because it governs the strength and the density\u003cbr\u003eof the final cast.\u003c\/p\u003e\r\n\u003cp\u003eSift or strew USG Dental Plaster - Impression into the water slowly and evenly. Do not drop large\u003cbr\u003eamounts of USG Dental Plaster - Impression directly into the water as proper soaking of the\u003cbr\u003eUSG Dental Plaster - Impression may not occur. USG Dental Plaster - Impression should be fully\u003cbr\u003edispersed in the water prior to mixing. Small batches require less soaking time than large batches.\u003cbr\u003eSee USG IG503 Plaster Mixing Procedures for specific soaking instructions.\u003c\/p\u003e\r\n\u003cp\u003eMixing USG Dental Plaster - Impression slurry is one of the most important steps in producing\u003cbr\u003eUSG Dental Plaster - Impression casts with maximum strength, absorption, hardness and other\u003cbr\u003eimportant properties.\u003c\/p\u003e\r\n\u003cp\u003eMechanically mixed slurries develop uniform casts with optimal strengths. USG Dental Plaster -\u003cbr\u003eImpression can be mechanically mixed through both batch and continuous processes. Proper blade\u003cbr\u003eand bucket dimensions are important for obtaining the best batch mix (see USG IG503 Plaster\u003cbr\u003eMixing Procedures for details).\u003c\/p\u003e\r\n\u003cp\u003eLonger mixing times result in higher mold strength and shorter set times.\u003c\/p\u003e\r\n\u003cp\u003ePOURING\u003c\/p\u003e\r\n\u003cp\u003eTo prevent air entrainment and provide a uniform, smooth surface, careful pouring of USG Dental\u003cbr\u003ePlaster - Impression slurry is necessary. Agitation\/vibration of the filled mold is a further step used\u003cbr\u003eto prevent air at or near the mold surface. Whenever possible, USG Dental Plaster - Impression\u003cbr\u003eslurry should be poured carefully in the deepest area so that the slurry flows evenly across the\u003cbr\u003esurface of the case mold.\u003c\/p\u003e\r\n\u003cp\u003ePouring a large amount of slurry directly on the face of the case mold may result in slight\u003cbr\u003edensification of the USG Dental Plaster - Impression mold at the point where it strikes the surface of\u003cbr\u003ethe case. This produces a hard spot, giving uneven absorption.\u003c\/p\u003e\r\n\u003cp\u003eDRYING\u003c\/p\u003e\r\n\u003cp\u003eAll casts should be dried as quickly as is safely possible after manufacture so that maximum\u003cbr\u003ephysical properties can develop. Dry to a constant weight.\u003c\/p\u003e\r\n\u003cp\u003eThe best drying rooms or ovens provide 1) uniform and rapid circulation (minimum of 15-30 fps\u003cbr\u003e(4.6-9.1 mps)) of air with no “dead spots” having little or no air movement, 2) equal temperatures\u003cbr\u003ethroughout the entire area, and 3) provisions for exhausting a portion of the air while replacing\u003cbr\u003eit with fresh air. High humidity surrounding the drying room or oven inhibits drying efficiency\u003cbr\u003ebecause the air pulled into the room is incapable of picking up much moisture from the molds.\u003c\/p\u003e\r\n\u003cp\u003eThe maximum temperature at which USG Dental Plaster - Impression molds are safe from calcination\u003cbr\u003eis 120 °F (49 °C). With substantial free water in the mold, a higher drying temperature can be used\u003cbr\u003ewithout difficulty. As drying progresses, the temperature must be reduced to prevent calcination.\u003cbr\u003eBefore removing molds from the dryer, the temperature should approach that of the area around\u003cbr\u003ethe dryer to prevent thermal shock. See IG502 Drying Plaster Casts for additional information.\u003c\/p\u003e\r\n\u003cp\u003eSTORAGE AND USE\u003c\/p\u003e\r\n\u003cp\u003eWhen properly used, USG Dental Plaster - Impression is safe to handle and easy to work with.\u003cbr\u003eKeep indoors at temperatures between 65 °F – 75 °F (18 °C – 24 °C) and 45% – 55% RH. Do not\u003cbr\u003estack more than two pallets high. Keep from drafts. Rotate stock. USG Dental Plaster - Impression\u003cbr\u003eshould be used within six months of the manufacturing date located on the package. Always follow\u003cbr\u003ehandling and use directions and safety warnings on the package.\u003c\/p\u003e\r\n\u003cp\u003e\u003ca href=\"https:\/\/www.usg.com\/content\/dam\/USG_Marketing_Communications\/united_states\/sds\/usg-dental-plasters-sds-en-52000000137.pdf\" target=\"_blank\" rel=\"noopener\"\u003eSDS\u003c\/a\u003e\u003c\/p\u003e","brand":"USG","offers":[{"title":"25lb","offer_id":48015593701691,"sku":null,"price":27.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/7539\/6411\/files\/gallery-large876657_971379c9-b17e-4e37-87e9-69529196fd95.jpg?v=1713651668"},{"product_id":"hydrocal-fgr-95","title":"Hydrocal® FGR 95","description":"\u003cp\u003eAVAILABLE IN 5, 25, AND 50LB OPTIONS IN THE DROPDOWN\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMix Ratio Parts Water by Weight per 100 Parts Plaster: 30 by weight\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUSG Hydrocal® Brand FGR 95 Gypsum Cement is a high-strength gypsum cement specially\u003cbr\u003eformulated for use with glass fiber for fabricating glass-reinforced architectural details. The alpha\u003cbr\u003ehemihydrate gypsum-based material has low water requirements that results in high-strength,\u003cbr\u003ehigh-density glass fiber-reinforced gypsum pieces. It is ideal for producing lightweight, thin-cast,\u003cbr\u003efire-resistant architectural casts.\u003c\/p\u003e\n\u003cp\u003eWith its superior fabrication flexibility – from simple cornices to ornate capitals and medallions\u003cbr\u003e– USG Hydrocal FGR 95 Gypsum Cement effectively duplicates pieces formerly made of plaster,\u003cbr\u003ewood, concrete and stone. USG Hydrocal FGR 95 Gypsum Cement overcomes building fire code\u003cbr\u003eincompatibilities faced by many plastics – at roughly one-third the cost of filled polyesters.\u003cbr\u003eExceptionally quick setting (45 – 75 minutes), USG Hydrocal FGR 95 Gypsum Cement accepts\u003cbr\u003emost coatings and finishes.\u003c\/p\u003e\n\u003cp\u003eMIXING INSTRUCTIONS\u003c\/p\u003e\n\u003cp\u003eUse potable water at temperatures between 70 °F (21 °C) and 100 °F (38 °C). Because variations in\u003cbr\u003eslurry (USG Hydrocal FGR 95 Gypsum Cement and water mixture) temperature produce variations\u003cbr\u003ein set time, it is important to keep both the USG Hydrocal FGR 95 Gypsum Cement and water in a\u003cbr\u003estable temperature environment prior to use. The higher the temperature of the slurry, the shorter\u003cbr\u003ethe set time. Conversely, the lower the temperature of the slurry, the longer the set time.\u003c\/p\u003e\n\u003cp\u003eWeigh both the USG Hydrocal FGR 95 Gypsum Cement and the water prior to use for each mix.\u003cbr\u003eThe water-to-USG Hydrocal FGR 95 Gypsum Cement ratio is critical because it governs the\u003cbr\u003estrength and the density of the final cast.\u003c\/p\u003e\n\u003cp\u003eSift or strew USG Hydrocal FGR 95 Gypsum Cement into the water slowly and evenly. Do not drop\u003cbr\u003elarge amounts of USG Hydrocal FGR 95 Gypsum Cement directly into the water as proper soaking\u003cbr\u003eof the USG Hydrocal FGR 95 Gypsum Cement may not occur. USG Hydrocal FGR 95 Gypsum\u003cbr\u003eCement should be fully dispersed in the water prior to mixing. Small batches require less soaking\u003cbr\u003etime than large batches. See USG IG503 Plaster Mixing Procedures for specific soaking instructions.\u003c\/p\u003e\n\u003cp\u003eMixing USG Hydrocal FGR 95 Gypsum Cement slurry is one of the most important steps in\u003cbr\u003eproducing USG Hydrocal FGR 95 Gypsum Cement casts with maximum strength, absorption,\u003cbr\u003ehardness and other important properties.\u003c\/p\u003e\n\u003cp\u003eMechanically mixed slurries develop uniform casts with optimal strengths. USG Hydrocal FGR 95\u003cbr\u003eGypsum Cement can be mechanically mixed through both batch and continuous processes.\u003cbr\u003eProper blade and bucket dimensions are important for obtaining the best\u003cbr\u003ebatch mix (see USG IG503 Plaster Mixing Procedures for details).\u003c\/p\u003e\n\u003cp\u003eLonger mixing times result in higher mold strength\u003cbr\u003eand shorter set times.\u003c\/p\u003e\n\u003cp\u003eAPPLICATION\u003c\/p\u003e\n\u003cp\u003eUSG Hydrocal FGR 95 Gypsum Cement slurry can be applied via hand lay-up, spray-up or solid casting\u003cbr\u003edepending on the mold complexity, size and depth, desired surface finish and quantity needed.\u003c\/p\u003e\n\u003cp\u003eThe most common method to fabricate large and\/or complicated open-mold architectural pieces\u003cbr\u003eis to use the hand lay-up method. Using a brush, apply a thin face coat of USG Hydrocal FGR\u003cbr\u003e95 Gypsum Cement slurry (without glass fibers) to the properly prepared mold to a maximum\u003cbr\u003ethickness of 1\/16 in. (1.6 mm). Take care to cover all surfaces with the face coat and as quickly as\u003cbr\u003epossible. As the face coat starts to lose its gloss yet is still tacky (do not allow the face coat to be\u003cbr\u003ehard and set), hand or brush apply a reinforcing coat of slurry with chopped glass fibers added,\u003cbr\u003eor by alternating layers of slurry and glass fiber veil. The reinforcing coat slurry should be mixed\u003cbr\u003eseparately approximately 10 to 15 minutes after the face coat slurry. Use a brush to compact the\u003cbr\u003eglass fibers into corners of the mold so no bridging occurs. Be careful not to push the glass fibers\u003cbr\u003ethrough the face coat. The total thickness of reinforcing layers depends upon the targeted flexural\u003cbr\u003estrength and weight of the finished cast part.\u003c\/p\u003e\n\u003cp\u003eThe spray-up method is best used for molds that are uncomplicated, or simplistic designs that\u003cbr\u003ehave high demand and need to be fabricated with higher daily volume output. Using a peristaltic\u003cbr\u003epump with a liquid accelerator pump and a spray gun mounted with a glass fiber roving chopper,\u003cbr\u003espray a thin face coat of USG Hydrocal FGR 95 Gypsum Cement slurry to a maximum thickness of\u003cbr\u003e1\/32 in. (0.8 mm), covering all faces of the mold. As the face coat starts to lose its gloss yet is still\u003cbr\u003etacky (do not allow the face coat to be hard and set), simultaneously apply a reinforcing coat of\u003cbr\u003eslurry and chopped glass fibers. A roller or brush should be used to compact the USG Hydrocal\u003cbr\u003eFGR 95 Gypsum Cement slurry and chopped glass fibers into corners and around any complicated\u003cbr\u003eareas. The total thickness of the reinforcement coat depends upon the targeted flexural\u003cbr\u003estrength and weight of the finished cast part. Follow all pump, hose and sprayer manufacturers’\u003cbr\u003erecommendations for usage with water-based slurry and chopped glass fibers.\u003c\/p\u003e\n\u003cp\u003eFor molds of greater depths and simple design features without using glass fibers, the solid casting\u003cbr\u003etechnique can be used. Depending upon final weight, strength and installation considerations, it\u003cbr\u003eis possible to mix USG Hydrocal FGR 95 Gypsum Cement slurry and pour directly into the mold\u003cbr\u003euntil the mold is completely full. Slight vibration just after pouring will help encourage air bubble\u003cbr\u003erelease. A brush can also be used to ‘puddle’ the slurry in the deeper parts of the mold to remove\u003cbr\u003eair. This method rarely is used with chopped glass fibers already mixed in with the slurry as it is\u003cbr\u003edifficult to achieve a fiber and air bubble-free face coat.\u003c\/p\u003e\n\u003cp\u003eA second method of solid casting employs a displacement plug approach where a backside mold is\u003cbr\u003eused to displace slurry in deeper parts of the mold. The result is similar to hand lay-up and spray-up\u003cbr\u003emethods and tends to be a faster fabrication process than the previous methods with deep relief molds.\u003c\/p\u003e\n\u003cp\u003eDRYING\u003cbr\u003eAll casts should be dried as quickly as is safely possible after manufacture so that maximum\u003cbr\u003ephysical properties can develop. Dry to a constant weight.\u003c\/p\u003e\n\u003cp\u003eThe best drying rooms or ovens provide 1) uniform and rapid circulation (minimum of 15-30 fps\u003cbr\u003e(4.6-9.1 mps)) of air with no “dead spots” having little or no air movement, 2) equal temperatures\u003cbr\u003ethroughout the entire area, and 3) provisions for exhausting a portion of the air while replacing\u003cbr\u003eit with fresh air. High humidity surrounding the drying room or oven inhibits drying efficiency\u003cbr\u003ebecause the air pulled into the room is incapable of picking up much moisture from the molds.\u003c\/p\u003e\n\u003cp\u003eThe maximum temperature at which USG Hydrocal FGR 95 Gypsum Cement molds are safe from\u003cbr\u003ecalcination is 120 °F (49 °C). Before removing molds from the dryer, the temperature should\u003cbr\u003eapproach that of the area around the dryer to prevent thermal shock. See IG502 Drying Plaster\u003cbr\u003eCasts for additional information.\u003c\/p\u003e\n\u003cp\u003eSTORAGE AND USE\u003cbr\u003eWhen properly used, USG Hydrocal FGR 95 Gypsum Cement is easy to work with and complies\u003cbr\u003ewith the federal Labeling of Hazardous Art Materials Act, 12 U.S.C. Section 1277 and ASTM D4236.\u003cbr\u003eKeep indoors at temperatures between 65 °F – 75 °F (18 °C – 24 °C) and 45% – 55% RH. Do not\u003cbr\u003estack more than two pallets high. Keep from drafts. Rotate stock. USG Hydrocal FGR 95 Gypsum\u003cbr\u003eCement should be used within six months of the manufacturing date located on the package.\u003cbr\u003eAlways follow handling and use directions and safety warnings on the package.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.usg.com\/content\/dam\/USG_Marketing_Communications\/united_states\/sds\/usg-hydrocal-fgr-gypsum-cements-sds-en-52000000017.pdf\" rel=\"noopener\" target=\"_blank\"\u003eSDS\u003c\/a\u003e\u003c\/p\u003e","brand":"USG","offers":[{"title":"5lb","offer_id":48015594357051,"sku":"47999","price":20.0,"currency_code":"USD","in_stock":false},{"title":"25lb","offer_id":48015594291515,"sku":"47999A","price":39.0,"currency_code":"USD","in_stock":false},{"title":"50lb","offer_id":48015594324283,"sku":"47999B","price":52.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/7539\/6411\/files\/fgr.jpg?v=1710986975"},{"product_id":"plaster-of-paris","title":"Plaster of Paris","description":"\u003cp\u003e\u003cstrong\u003eMIX BY VOLUME- DO NOT MIX BY WEIGHT\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ePlaster of Paris is for general wall and ceiling repairs. Sets fast in 20-30 minutes without shrinking. Smooth formula provides great results every time. Can also be used to mix your own DIY version of chalk finish paint. Interior use.\u003c\/p\u003e\n\u003cp\u003e• Sets hard in 20 to 30 minutes for quick repairs\u003cbr\u003e• Professional quality, for repairs in plaster walls and ceilings\u003cbr\u003e• Easy to sand and paint\u003cbr\u003e• Non-shrinking\u003cbr\u003e• Smooth, bubble-free formula\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFOR BEST RESULTS\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e• Use cold water (40°F to 50°F) when mixing.\u003cbr\u003e• Sand as needed before decorating. Wet sanding is recommended to avoid creating dust.\u003cbr\u003e• Always use a good quality oil or latex-based paint for a professional finish.\u003cbr\u003e• For repairs requiring a longer work time (over 6-10 minutes), use DAP Plaster Wall Patch.\u003cbr\u003eDO NOT attempt to make a cast enclosing any part of the body using this material. Failure to follow these\u003cbr\u003einstructions may cause severe burns that may require surgical removal of affected tissues\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAPPLICATION\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ePatching:\u003cbr\u003e1. Surface must be clean and free of wallpaper, loose paint, loose plaster and all foreign material.\u003cbr\u003e2. Undercut edges of existing plaster so patch anchors around opening.\u003cbr\u003e3. Lightly dampen with water the area to be patched.\u003cbr\u003e4. Add DAP Plaster of Paris to clean water in a clean container mixing (by volume) 2 parts powder to 1-part cold\u003cbr\u003ewater (40°F to 50°F). Stir to a smooth consistency. Do not mix more material than can be used in 6-\u003cbr\u003e10 minutes. Discard any material that has begun to harden.\u003cbr\u003e5. Apply the DAP Plaster of Paris with a clean putty knife or trowel filling around edges. Remove excess\u003cbr\u003ematerial so that plaster is level and flush with the surface being patched.\u003cbr\u003e6. For large, deep openings apply a base layer and allow it to dry. When the base layer is dry, wet the\u003cbr\u003esurface and apply the finish layer to patch. When thoroughly dry, sand smooth. Make sure the plaster\u003cbr\u003eis completely dry and hard before painting.\u003c\/p\u003e\n\u003cp\u003eMolding:\u003cbr\u003e1. The mold should be clean and free of loose material. For most uses, wetting the inside of the mold\u003cbr\u003eprior to pouring is sufficient. However, when a super-smooth surface is desired on your finished\u003cbr\u003epiece, a coat of mold release is recommended instead of water. A suggested mold release is a\u003cbr\u003emixture of mineral spirits and petroleum jelly mixed to a watery consistency and applied with a brush\u003cbr\u003eto the inside of the mold.\u003cbr\u003e2. Wet inside of mold for easy removal after drying.\u003cbr\u003e3. Fill mold one quarter at a time, tapping on tabletop to release air after each fill.\u003cbr\u003e4. After 1 hour remove the dried Plaster of Paris from the mold. Allow the cast to dry 1 to 3 hours\u003cbr\u003edepending on size.\u003cbr\u003e5. Allow 24 hours to dry.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCLEAN UP \u0026amp; STORAGE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWash tools immediately after use with water. Cured product must be cut or scraped away. Be sure\u003cbr\u003econtainer is closed and tightly sealed. Store container in a cool, dry place away from extreme heat or\u003cbr\u003ecold.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.dap.com\/media\/3795\/1173001english.pdf\" rel=\"noopener\" target=\"_blank\"\u003eSDS\u003c\/a\u003e\u003c\/p\u003e","brand":"DAP","offers":[{"title":"4lb","offer_id":48015617491259,"sku":"27810308","price":11.0,"currency_code":"USD","in_stock":false},{"title":"8lb","offer_id":48015617524027,"sku":"27810310","price":18.0,"currency_code":"USD","in_stock":true},{"title":"25lb","offer_id":48015617458491,"sku":"27810312","price":22.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/7539\/6411\/files\/plasterofparis-8lb-10310-6x6.jpg?v=1710987151"},{"product_id":"gypsum-additives","title":"Gypsum Additives","description":"\u003cp\u003eGypsum Plaster Accelerators are additives that shorten the setting times for gypsum plaster and setting-type joint compounds by causing gypsum crystals to form at a much faster rate. Safe and easy-to-use, USG Gypsum Plaster Accelerators are available in the following formulations:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUSG Standard Strength Gypsum Plaster Accelerator\u003c\/strong\u003e reduces set times for veneer and conventional plasters by 10 to 30 minutes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUSG Accelerator — \u003c\/strong\u003e helps correct plaster dry-out conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.usg.com\/content\/dam\/USG_Marketing_Communications\/united_states\/product_promotional_materials\/finished_assets\/usg-accelerators-application-tips-en-P850.pdf\" target=\"_blank\" rel=\"noopener\"\u003eTech Sheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.usg.com\/content\/dam\/USG_Marketing_Communications\/united_states\/sds\/usg-standard-strength-accelerator-sds-en-53000010021.pdf\" target=\"_blank\" rel=\"noopener\"\u003eSDS\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e-----------------------------------------------------------------------------------------------------------\u003c\/p\u003e\n\u003cp\u003eGypsum Plaster Retarders extend the set time of conventional plasters, veneer plasters, lime finish plasters and setting-type joint compounds. By slowing the chemical crystal formation that causes gypsum plaster to set or harden, Gypsum Plaster Retarders allow more time to complete each job. Gypsum Plaster Retarders easily disperse into water prior to adding plaster and are available in the following formulations:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Strength Retarder \u003c\/strong\u003eis recommended for slight to moderate (30 to 45 minutes) lengthening of set times for veneer and conventional plasters and setting-type joint compounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRetarder for Lime-Containing Plaster Products \u003c\/strong\u003eis designed for use with Diamond® Veneer Finish, Red Top® Brand Finish Plaster andRed Top® Gauging Plaster and Lime Finishes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.usg.com\/content\/dam\/USG_Marketing_Communications\/united_states\/product_promotional_materials\/finished_assets\/plastering-technical-guide-job-use-of-retarder-in-plaster-en-PM7.pdf\" target=\"_blank\" rel=\"noopener\"\u003eTech Sheet\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.usg.com\/content\/dam\/USG_Marketing_Communications\/united_states\/sds\/usg-standard-strength-retarder-sds-en-53000010022.pdf\" target=\"_blank\" rel=\"noopener\"\u003eSDS\u003c\/a\u003e\u003c\/p\u003e","brand":"USG","offers":[{"title":"Accelerator 3lb","offer_id":48015651930427,"sku":"47992","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Retarder 2.5lb","offer_id":48015651963195,"sku":"47991","price":25.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/7539\/6411\/files\/accelerator_6d827cdb-87a5-4166-b3b5-5c561ae3cf54.jpg?v=1714149788"},{"product_id":"steel-curry-comb","title":"Steel Foam Comb Rasp","description":"\u003cul\u003e\n\u003cli\u003eSOFT ERGONOMICALLY DESIGNED HANDLE-Which comfortably forms to your hand no matter which way you hold it.\u003c\/li\u003e\n\u003cli\u003eREVERSIBLE-Spring steel has two sides that you can flip over.\u003c\/li\u003e\n\u003cli\u003eREMOVE foam and clay  easily\u003c\/li\u003e\n\u003cli\u003eMULTI-FUNCTION RASPING TOOL- Great for HDU and other foams.\u003c\/li\u003e\n\u003cli\u003eSTRONG TEETH-Teeth will not bend or break\u003c\/li\u003e\n\u003cli\u003eCurry Comb\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"The Compleat Sculptor, Inc","offers":[{"title":"Default","offer_id":48015808790843,"sku":null,"price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/7539\/6411\/files\/curry-comb2.jpg?v=1710989853"},{"product_id":"terra-alba-50lb-bag","title":"Terra Alba No. 1 50lb Bag","description":"\u003cp\u003eUSG Terra Alba No. 1 is a dihydrate form of calcium sulfate produced by fine grinding and air-separating high-purity, white gypsum containing 20% water of crystallization.  It releases combined water as it is heated above 50°C, releasing 75% of water as temperatures reach 180°C (only when temperatures exceed 400°C is water totally removed). USG Terra Alba No. 1: Can be used as a flame-retarding filler when processed at room temperature Contributes to desired expansion, green strength and controlled set in specialty cement applications Is a relatively soft material (2-3 Mohs scale hardness) contributing to minimal wear on equipment.\u003c\/p\u003e\n\u003cp\u003eUSG TERRA ALBA No.1 CALCIUM SULFATE FILLER\u003c\/p\u003e\n\u003cp\u003e• Flame-retarding filler when processed at room temperature\u003c\/p\u003e\n\u003cp\u003e• High purity\u003c\/p\u003e\n\u003cp\u003e• White in color\u003c\/p\u003e\n\u003cp\u003e• Low abrasion to processing equipment\u003c\/p\u003e\n\u003c!----\u003e","brand":"USG","offers":[{"title":"Default Title","offer_id":49053642129723,"sku":"00-123874","price":36.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/7539\/6411\/files\/terralba.jpg?v=1719252036"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/7539\/6411\/collections\/gypsumplastercollection.jpg?v=1699739518","url":"https:\/\/maacaffestore.com\/collections\/gypsum-plaster.oembed","provider":"The Compleat Sculptor, Inc","version":"1.0","type":"link"}