Pinholes in glaze

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How do I refire a glazed piece ?

Pinholes in glaze

Pinholes in glaze can be caused by under-fired bisque, applying glaze on greenware or firing too rapidly. Sometimes these holes are in the greenware and should be rubbed out before firing. If pinholes appear in the glaze, fill the holes with glaze and refire.

   

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Jerry Mayo