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Scarva Raw Materials Silica Sand 40s-90s (Medium) RM1507 From £2.30
Silica Sand 40s-90s (Medium)
Silica Sand Grogs
Added to a body, they help glaze fit and make the body more refractory.
Grog (ground, fired body) is added to some clays to provide a proportion of fired and often refractory material to the body. This adds texture, along with bite, for better control during forming. The grog also acts as an opener and helps the clay to dry uniformly. As the grog is already fired it also cuts down on the overall shrinkage thus reducing problems of cracking and warping. Most are fired to high temperatures of at least 1300ºC.
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