Ingredients

Ingredient Amount
Gerstley Borate 30.00
Minspar 200 Feldspar 46.00
EPK Kaolin 13.00
Silica 11.00

Instructions

This recipe was shared by London Clay Art Centre in the February 2019 issue of Ceramics Monthly.
This recipe works well with Mason stains and oxides added for color. To test colorants, start with 0.25–2% of metallic oxide colorants, and 1–5% of Mason stains of other commercial stains. Susan Day and Beth Turnbull Morrish used this glaze on the outdoor mosaic at London Clay Art Centre in London, Ontario, Canada.