Flow tester tells me if I have overfluxed the glaze

Thursday 20th June 2019

This is important because I am searching for a balance between the degree of melt fluidity of my original crazing glaze but having a thermal expansion to fit my porcelain (this is G3806E and F). With each adjustment to the chemistry to drop the thermal expansion I do a firing to compare the melt fluidity with the previous iteration. On the right I have too much boron, it’s melting more than I want. And bubbling.

Pages that reference this post in the Digitalfire Reference Library:

A Low Cost Tester of Glaze Melt Fluidity, Melting Temperature

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