Red burning clays bubble glazes more


Tuesday 11th November 2014

A closeup of the rim and a transparent-glazed cup made from a high-iron clay (Plainsman Redstone) and fired at cone 6. Iron-bearing clays tend to gas more on firing and can generate many more bubbles in glazes for this reason (a buff stoneware would be almost free of bubbles with this glaze, Plainsman M340 transparent). Thus, it is best to use opacified glazes with this type of body.

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One example where a highly melt fluid clear glaze is better, Glaze Bubbles


This post is one of thousands found in the Digitalfire Reference Database. Most are part of a timeline maintained by Tony Hansen. You can search that timeline on the home page of digitalfire.com.