Harriet Posted March 2, 2019 Report Share Posted March 2, 2019 Hello, I'm firing a cone 4 vitrified slip cast body which looks lovely but seems to slump particularly with the larger pieces. I'm going to try firing at a lower temperature but thought I would ask on the forum to see if anyone had any other suggestions. I'm using a fairly large electric kiln which I recently purchased. I also will try taking out the lower plug on the kiln as I heard that helps keep the temperature more even. Any advice would be greatly appreciated! Thanks! Harriet Link to comment Share on other sites More sharing options...
Mark C. Posted March 3, 2019 Report Share Posted March 3, 2019 The easy fix is add about 10% EPK to slip-try a sample of this first .The alumina in it will help stabilize the body to slump less so its a cheaper way to get that alumina. Link to comment Share on other sites More sharing options...
Harriet Posted March 3, 2019 Author Report Share Posted March 3, 2019 Excellent, that sounds simple. Thanks so much Mark! Link to comment Share on other sites More sharing options...
Mark C. Posted March 3, 2019 Report Share Posted March 3, 2019 TEST some slip first to see if this fixes it before doing a lot of slip. Link to comment Share on other sites More sharing options...
Harriet Posted March 3, 2019 Author Report Share Posted March 3, 2019 Yes definitely. I have already mixed a lot and will mix a separate batch and test before changing. Fingers crossed! Thanks for the help Mark! Link to comment Share on other sites More sharing options...
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