Ingredients

Ingredient Amount
Whiting 20.00
Potash Feldspar 40.00
EPK Kaolin 10.00
Silica 30.00
Add Amount
Yellow Iron Oxide 2.00

Instructions

Published in "Gemstones & Glazes" by Ryan Coppage, in the Sep 2017 issue of Ceramics Monthly.

 
*I suggest G200 or Custer as the most potassium-rich feldspar substitutes. Both are approximately 10:3 K2O:Na2O and are predominantly potassium oxide feldspars.