Craze city: Feldspar and Nepheline Syenite on cone 10R porcelain bodies

Monday 17th October 2016

These were applied to the insight-live.com/glossary/8">bisque as a slurry (suspended by gelling with powdered or dissolved Epsom salts). On the left is Custer feldspar, the right is Covia Nepheline Syenite. Notice the crazing (feldspars, and nepheline syenite, always craze because they are high in K2O and Na2O, these oxides have by far the highest thermal expansions).

Pages that reference this post in the Digitalfire Reference Library:

Feldspar, Nepheline Syenite, Pure feldspar applied as a glaze: How is that possible?, Glaze Crazing

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.