jzclay2@AOL.COM on wed 24 oct 01
After reading a recent responce from Ron Roy I was wondering if this glaze
we are using could also have a problem of severe crawling. Over the past
year this glaze has been spitting the glaze off large areas of pots during
firing. Shape does not seem to matter. We are firing to a hard cone 6 ox.in
most cases. This glaze has also been over fired and under fired with the
same results. The spitting does not always occur and does not seem to be
associated with any one clay body or firing. Since the same batch of glaze
in the same firing may on one pot spit it off and another pot of the same
clay body may have no ill effects. This has happened on B-mix, Buff
Stoneware, Cone 6 porcelain and some iron bearing cone 6 stoneware bodies
and anywhere between Cone 5-7 firings.
Any help or suggestions are appreciated. Here is the recipe we are using.
Titanium White
Cone 6
Ingredients batch batch batch
Cust. feldspar 41.3 413 826
whiting 14.9 149 298
Zinc ox. 12 120 240
Kaolin 4 40 80
Flint 26.9 269 238
Titanium dioxide 5 50 100
thanks
Jay Walsh
Fine Line Creative Arts Center
Crane Dr.
St. Charles, IL
jzclay2@aol.com
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