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Ingredients

Ingredient Amount
Gillespie Borate 30.00
Ferro Frit 3195 30.00
Nepheline Syenite 20.00
EPK Kaolin 10.00
Silica (325 mesh) 10.00
Add Amount
Copper Carbonate 5.00

Instructions


Test with 5–8% copper carbonate.

This recipe was shared by Nathan Bray in Low-Fire Soda by Justin Rothshank, available through the Ceramic Arts Network shop: https://mycan.ceramicartsnetwork.org/s/product-details?id=a1B3u000009udqwEAA.