Karen and Cliff Sandlin on sat 13 oct 01
Gosh - never occurred to me that it could be the clay. Thanks for
pointing this out. That may be the reason for the exploding craters
also.
Karen
-----Original Message-----
From: Ceramic Arts Discussion List [mailto:CLAYART@LSV.CERAMICS.ORG] On
Behalf Of Wade Blocker
Sent: Friday, October 12, 2001 12:08 PM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Re: glaze problems
Karen,
If you are using the cone 6 to 9 clay from Laguna, you will have
glaze
problems. I used that clay and the glazes would not only crackle, but
actually crack. The firing range for that clay is just too wide.The cone
4
to 6 clays are what one should use if you fire to cone 5 or a bit
higher.
Thinning a glaze too much might end up with a rough surface, unless it
is a
transparent gloss glaze. Matt glazes have to be applied with a thicker
coat. If the pot ends up with a few bare spots or pinholing, reglaze
that
area with either the same glaze or a different glaze, and refire. This
will
generally result in a perfectly glazed pot. Mia in ABQ
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