scruffyryan Posted March 1, 2016 Report Share Posted March 1, 2016 Hi, new to both ceramics and the forum. I'm pretty interested in the chemistry side of glazing and clay creation and I was wondering if someone here had a good (math/scientific) way of testing and measuring glaze shrinkage other than trial and error on full pieces? Link to comment Share on other sites More sharing options...
Marcia Selsor Posted March 1, 2016 Report Share Posted March 1, 2016 what is it you are trying to do? The coefficient of expansion (COE) and contraction is the only thing I can think of that relates to your question. You want the glaze to fit your clay. Marcia Link to comment Share on other sites More sharing options...
Joseph Fireborn Posted March 1, 2016 Report Share Posted March 1, 2016 Marcia beat me to it. Here is a link about the subject: https://digitalfire.com/4sight/glossary/glossary_calculated_thermal_expansion.html Link to comment Share on other sites More sharing options...
Callie Beller Diesel Posted March 1, 2016 Report Share Posted March 1, 2016 I can recommend trial and error on partial pieces or test tiles instead To actually measure coe, you need a dialatometer, which for studio pottery practices is wildly impractical. The next best thing you can do is use glaze calc software to narrow the field significantly, but you still need to refine the search for a glaze that fits your clay body by making tests. Link to comment Share on other sites More sharing options...
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