leadfree glaze crazing

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What is crazing?

leadfree glaze crazing

If crazing occurs and the witness cone indicates the glaze and bisque firings are properly fired, make some tests by firing the bisque progressively hotter (eg. if you fire to bisque 05, test to 04, then 03).
When you fire hotter, the expansion of the bisque is changed and glaze on the bisque may fit better.

   

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