Askerbasker Posted August 31, 2022 Report Share Posted August 31, 2022 (edited) Is it possible to make a glaze that can be fired at cone 08? I have been searching for a while but i can’t seem to find a basic glaze recipe for cone 08. Edited August 31, 2022 by Askerbasker Quote Link to comment Share on other sites More sharing options...
Piedmont Pottery Posted August 31, 2022 Report Share Posted August 31, 2022 It somewhat depends on what properties you want the glaze to have. A lot of raku glazes work in the 08 range, but if you're looking for a durable surface for functional ware it may be tough to get down to 08. Quote Link to comment Share on other sites More sharing options...
Askerbasker Posted August 31, 2022 Author Report Share Posted August 31, 2022 Im looking for a durable food safe surface, i found this old recipe, but im pretty new to the chemistry of glazes and don’t now if this glaze is functional. Quote Link to comment Share on other sites More sharing options...
Bill Kielb Posted August 31, 2022 Report Share Posted August 31, 2022 (edited) Well, just my opinion: Barium carbonate is not something I ever include in my glazes for food use. It has more boron than required to melt at cone 04 so appears to be excessive for 04 - maybe ok at cone 08. It.has very low amounts of silica and alumina and falls in an uncommon area of Stull. It’s R2O is 0.27:0.73 so not bad in that respect. Hard to know without firing and testing for sure but the barium carbonate and very low silica and alumina levels for me mean I would not use it for food service. Edited August 31, 2022 by Bill Kielb Quote Link to comment Share on other sites More sharing options...
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