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Showing results for tags 'defect'.
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Ceramic Human posted a topic in Clay and Glaze ChemistryWanted to ask you guys about your experience with this defect we've been having. It's not glaze specific and I highly doubt these growths are just bubbling up from the clay during a glaze firing (but maybe). This defect does not occur only on mugs that are close to the thermocouple, but I don't want to rule out the possibility that it is thermocouple related. Ring any bells?