irenepots Posted June 21, 2022 Report Share Posted June 21, 2022 I started a glaze load to cone 5, but mistakenly entered the slow bisque program instead of slow glaze. Seven hours later I noticed the temperature was much lower than it should have been, checked the program and discovered my mistake. I shut down the firing and restarted it the next morning, after adding a new witness cone on the top shelf. Everything looked ok, and this time I entered the right program. The temperature in the kiln was about 200 degrees when this firing started. When I opened the cooled kiln after the firing there were a couple pots on the top shelf that had suffered what seems to be extreme crawling. One seemed to have flung its glaze off and onto a neighboring pot. Some other pots also crawled but to a lesser extent. The top shelf cone read cone 5 and the bottom one a bit hotter than that, tho that cone was the one from the previous firing. Different clay bodies and glazes were involved but nothing new. What could have happened? You can see how the glaze pooled in the mug. Pics below. Thanks! Quote Link to comment Share on other sites More sharing options...
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