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Ingredients

Ingredient Amount
Nepheline Syenite 25.00
Albany/Alberta Slip 75.00
Add Amount
Cobalt Carbonate 5.00

Instructions

The St. John's Black glaze is intended for cone 9-10 reduction, although I have used it in various atmospheres and temperatures. At cone 10 reduction it has an opaque, almost metallic, semi-gloss quality. Fired in an electric kiln to cone 10, the glaze has a very high gloss, but shows variations in thickness. I currently fire it at cone 6 in an electric kiln and it is a nice opaque satin glaze. - Sarah German

Published in "Serving Up Functional Conversations" by Sarah German, in the Dec 2014 issue of Ceramics Monthly.

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