Lime Popping
Details
A body firing problem where particles of calcium sulphate in the fired or bisque fired body slowly absorb water from the air, expand, and pop out a section of the body. These particles can be contamination or naturally occurring contaminants in the clay.
Related Information
A lime particle embedded in the clay has expanded an popped
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This is a common problem for people who mix their own clay bodies, using raw, unground clay materials.