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Grog - 10 x 18 Mesh

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Price: $23.00

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by the pound:
Grog is clay which has been fired then ground up. Grog can come in many particle sizes, from fine to coarse. It is used to reduce shrinkage in clay bodies. The best size of grog for larger sculptures, thick handbuilt ware, or extra heavy thrown work is a 10 x 18 mesh. (a blend of grog between the 2 mesh sizes)
This means that the grog is small enough to go through a screen with 10 openings per inch, but is to large to go through a screen with say 20 openings per inch. Commercially available grog almost always has some iron in it and may not be suitable if you want a pure white clay body. For throwing or hand building, grog in a clay body reduces the shrinkage and makes it less likely that a piece will crack during drying and firing.
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