Crawl glaze - 1100 Celsius

One of my favourite glazes is a white crawl which matures between 1080 and 1100 degrees Celsius.

Frit 4113 75 Ball clay 12.5 Neph syenite 12.5 then add magnesium carbonate light 25% (eg. 250gms to 1kg of mix - let the MgCO3 soak in water first)