Underglazes melting very differently at cone 8

Thursday 6th November 2014

Commercial insight-live.com/glossary/92">underglaze colors fired in a flow tester. Underglazes need to melt enough to bond with the underlying body, but not so much that edges of designs bleed excessively into the overlying glaze. A regular glaze would melt enough to run well down the runway on this tester, but an underglaze should not flow at all. The green one here is clearly not sufficiently developed, its base needs more frit. The black is much too melted, its base needs less frit. The pink and blue are also melting too much. Clearly, underglazes recipes need individual attention so they melt to the same degree.

Pages that reference this post in the Digitalfire Reference Library:

Underglaze, Silk screen printing, Reverse Engineering an Underglaze, Bleeding colors

This post is one of thousands found in the Digitalfire Reference Database. Most are part of a timeline maintained by Tony Hansen. You can search that timeline on the home page of digitalfire.com.