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Re: Underglazes shivering....GRRRR!!!!!!

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lindwood_at_TeacherArtExchange
Date: Sun Mar 20 2005 - 13:19:35 PST


The clay I am using is a lowfire white clay with no grog. Perhaps it is
too full of talc? Maybe that is the issue? Maybe clay variations
happen in the clay body? I know I used to use this same clay for ten
years when I was making and selling my lowfire, heavily patterned and
multiple fired underglaze work. It would take me 20 hours to glaze some
pieces. I made a lot of $$ off of this work, but the reason I finally
stopped and switched to metals was frustration over this very thing.
It's so disheartening to have this happen. I feel their pain. I would
love to hear from anyone else who uses a lowfire white clay with TOTAL
success with underglazing. Yes, I slow cooled them. No, they were not
too thick. Yes, we applied them to bisque. Yes, we dipped them in
clear in a final firing. If the colors I mentioned were applied over
another color as spots or stripes, or just layering of colors, there was
NO problem. The problem only occurred where they were put directly on
the clay. The clay was not dusty, and it is so consistent that I know
it's not greasy fingerprints or some reason like that. It's just an
incompatibility of the clay and the UG colors mentioned. I only do
underglazing with one class per year, everyone else glazes with no
problems. I do the underglazing to obtain sharp, graphic patterns. I
hate to scrap it, but if I can't come up with a predictable clay body
for this project, we'll just do glazing. It's just not the same when
you want pattern and crisp designs. So...anyone order white clay that
they have shipped to them from out of town? Sax? I could include this
on my big supply order and get free shipping if I do it now. I only
want to hear about white clays that have been tested with Amaco UG
successfully. Thanks y'all! Have a happy spring break!

Linda
 
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