Friday, November 4, 2011


Here are two (okay three) formulas for very nice base glazes (Cone 9/10) that come from Cleveland State University. I am not sure if they originated there, but well before I got there, they were being used as a jumping off point for a variety of glazes by a number of students. I am also including a formula that acts as an approximate substitute for Cornwall Stone. I used the 2001 base more frequently than the 1001 base and was able to come up with a large number of Cone 9 glazes. They are dependable and worth a shot. With the right base glaze, the possibilities are nearly endless.

1001 BASE
Cornwall Stone 75
Whiting 15
Gerstley Borate 10

2001 BASE
Nephaline Syenite 33
Kaolin 15
Whiting 20
Flint 32

Custer Spar 67
Flint 22
Kaolin 11

Illustrated is a large severely paddled, covered mizusashi form glazed in one or another of the base glaze concoctions that I developed at CSU.

“Results! Why, man, I have gotten lots of results. I know several thousand things that won’t work. “ Thomas Alva Edison (1847-1931)