Grog - Course (12/20 Mesh) - PLEASE CALL FOR QUANTITY DISCOUNTS
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Grog is used mainly as a clay body addition to control drying and fired shrinkage and to open the body. More details... |
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Product Details
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Grog is a granular material made by grinding brick or other fired ceramic although it can also be made by crushing certain natural minerals. It is marketed in designations that refer to the size range of the particles. 20-40 mesh grog means that all material under 40 and over 20 has been graded out to provide a material whose particle size range is tightly controlled. Grog is used mainly as a clay body addition to control drying and fired shrinkage and to open the body to allow quicker venting of water vapour during drying and gases of decomposition during firing. It does on a large scale what 200 mesh silica does on a microscopic scale. A sculpture body typically has 20-30% grog.
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