Ingredients

Ingredient Amount
Barium Carbonate 4.60
Gerstley Borate 12.10
Whiting 7.90
Ferro Frit 3110 1.90
Kona F-4 Feldspar (substitute Minspar 200) 37.20
Grolleg Kaolin 9.30
Silica 27.00
Add Amount
Tin Oxide 1.00

Instructions

Published in "Clear Liner Glaze" by Sam Chung, in the Nov 2014 issue of Ceramics Monthly.
Author note: After bisque firing the work to cone 06, I line the inside of the pot with this clear glaze. After firing to cone 10, I spray a cone 6 commercial clear glaze on the outside when the pot is still warm, which helps evaporate some of the water from the glaze. I reload it into an electric kiln and fire to cone 6. This may sound backward but it resolved a crazing issue I was having with my glaze.