SKU: RM405 Categories: ,

Grog is a hard-fired clay crushed to various mesh sizes. It may be added to clays for tactile and visual texture. It can aid in opening the body for drying purposes, reducing shrinkage, and to add ‘Tooth’ during the forming process.

This material is produced from calcined mullite that is precisely sized through a series of screens and blended to obtain a series of coarse to fine sizes. During screening the grains are de-dusted. The product is used mainly for stucco and investment casting, in ceramics its main application is as a low expansion grog for bodies.


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This is such a great place if you are a starving artist who is a clay addict! The employees are so helpful and Marcie and Quinn are great! I love how they have their own line of glazes and clays to choose from. I favor their Whitestone stoneware. It is a finely compounded stoneware with a porcelain appearance and feel, great for throwing on the potters wheel... Y'all should visit this store if you love exceptional quality materials and customer service. Five stars all day!

Cameron B. Gig Harbor, WA