How much does a glaze need to melt before it sticks to the body well?

Friday 9th January 2015

The back flat side of balls of 1916J and Q insight-live.com/glossary/34">low fire glaze that melted into a dome shape after being fired to 1550F. They have been turned over to see the back side (the front side is still stained by volatilizing carbon). Clearly they have reached zero porosity and are beginning to melt, yet they have not adhered to the vitreous porcelain tile! This demonstrates the degree to which an engobe must melt to secure itself well to the underlying body.

Pages that reference this post in the Digitalfire Reference Library:

G1916Q - Low Fire Highly-Expansion-Adjustable Transparent, Engobe

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