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Fire Clay's
Fire clay's vary widely in their characteristics. The hallmark is their high firing range. They mature at about 2696°F (1500°C). Although relatively free from mineral impurities, they tend to have spots of iron which lend a speckled appearance once fired.
Fire clay's are often used in stoneware clay bodies to increase their maturation temperature and to give the fired clay a bit extra roughness, or "tooth". They are also used fuel-fired kilns to create cone packs (which monitor temperature), as supports for ware or shelving, and to seal doors.
Fire Clay's
Fire clay's vary widely in their characteristics. The hallmark is their high firing range. They mature at about 2696°F (1500°C). Although relatively free from mineral impurities, they tend to have spots of iron which lend a speckled appearance once fired.
Fire clay's are often used in stoneware clay bodies to increase their maturation temperature and to give the fired clay a bit extra roughness, or "tooth". They are also used fuel-fired kilns to create cone packs (which monitor temperature), as supports for ware or shelving, and to seal doors.