Plainsman Coffee Dark Stoneware - Bray Clay

Dark-burning, plastic cone 6 clay.   The body is made from 60% of Plainsman’s native A3 stoneware clay; to that they add kaolin, silica, bentonite, raw umber and talc. Raw umber is a natural soil/clay, so it has the same handling precautions as other clays.   Coffee contains approximately 0.5% of MnO. Maximum firing is cone 6, 2200F, beyond that manganese fumes will be released […]

Absolutely jet-black cone 6 engobe on M340

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Find many great new & used options and get the best deals for Vintage Frankoma Pottery Plainsman Brown 5C Flat Cup 7 Oz Coffee Mug at the best online

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