I must correct my last post. I said that the 0.3 KNaO- 0.7CaO- 0.4Al2O3- 4.0 SiO2 Glaze was based on = Seger Cone 02a. This is incorrect. Please delete the 0. The Seger Cone is 2a. It contains 0.1 eq Fe2O3 Sorry Folks. Best regards, Ivor.
