Luca Ask Posted February 28, 2021 Report Share Posted February 28, 2021 I tried to use the glaze calculator of glazy.org It is very interesting but I can not understand if it is possible to know the ideal firing cone. For a "normal" not runny glaze. It seem strange for me that I can not see differences according to different cone firing. Underfiring and overfiring indications. Link to comment Share on other sites More sharing options...
Dick White Posted March 1, 2021 Report Share Posted March 1, 2021 The "ideal" firing cone of a glaze cannot be "calculated" from a glaze formula. There are too many variables in the eutectics of glaze materials that result in changes to the melting point of different mixtures. When one is familiar with the UMF calculations, it is possible to roughly predict a likely range of temperatures/cones of a particular recipe, but the exact performance of a recipe at a specific cone firing can only be determined through practical testing. Link to comment Share on other sites More sharing options...
Luca Ask Posted March 1, 2021 Author Report Share Posted March 1, 2021 9 hours ago, Dick White said: The "ideal" firing cone of a glaze cannot be "calculated" from a glaze formula. There are too many variables in the eutectics of glaze materials that result in changes to the melting point of different mixtures. When one is familiar with the UMF calculations, it is possible to roughly predict a likely range of temperatures/cones of a particular recipe, but the exact performance of a recipe at a specific cone firing can only be determined through practical testing. It's a pity!!! Link to comment Share on other sites More sharing options...
Magnolia Mud Research Posted March 1, 2021 Report Share Posted March 1, 2021 On 2/28/2021 at 5:46 AM, Luca Ask said: I tried to use the glaze calculator of glazy.org It is very interesting but I can not understand if it is possible to know the ideal firing cone. For a "normal" not runny glaze. It seem strange for me that I can not see differences according to different cone firing. Underfiring and overfiring indications. try the MELTS software for igneous petrology:http://melts.ofm-research.org/ If you go down that "rabbit hole", be prepared for an totally different vocabulary than the one used by potters. LT Link to comment Share on other sites More sharing options...
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