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We use wax to keep lids from becoming glazed to jars. Stoneware can distort in firing, so we usually fire lidded containers with their lids on. Otherwise, the jar opening might go out of round, and the lid may not fit well. Wax all the points where the lid and jar come into contact. It's a good idea to run the wax about 1/8" back from the line where they meet both inside and outside the pot in case the glaze runs.
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William Pirraglia |