[Clayart] one more thing

mel jacobson melpots at visi.com
Thu Apr 26 07:58:52 EDT 2018

most of you have to understand that i have never used an electric
kiln in my professional life.
this is all new to me.
for example, getting all the little crap out of my glazes
has been daunting.  i got a new sieve the other day, and
re/did all my glazes.  had to use a 3m green pad to
push it all through. there was a lot of tiny junk.

when one fires to cone 11 all of that stuff melts
and becomes a part of the glaze...that does not work
at cone 7 oxy.

i have to be much more careful with my greenware.
in fact, i have found myself washing and polishing rims.
those little nubbins show up later.
and, without doubt, getting the right amount of oxide
in a glaze is tricky.  a teaspoon of cobalt will make a cone
10 reduction glaze gaudy.  in an oxy kiln, it does not show at all.
my lake superior sand does not show up, and ground up
taconite has almost no affect.  (high temp reduction makes
all the stuff happen.)

remember, all those years with kids and electric kilns did
not affect me...i never fired my pots at school...ever.
i made hundreds of demo pots at school, with my own clay
and took them home and fired them in the gas kiln.
anyway, having a great time learning...mel

Mel's Website:  www.melpots.com

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