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stable is not industrial- stains in a stable glaze

updated sun 21 jul 02


Bonnie/Jeremy Hellman on sat 20 jul 02

Speaking of Tony Hansen's stable 5 x 20 glaze, I used it as a base for
trying commercial stains, i.e. Spectrum and Cerdec stains. I dry mixed a
2000 batch, and used 100 gram batches of that 5 Part Glaze with 10% of each
stain with NO opacifyer. The colors are vibrant, the glaze behaved as always
(doesn't move much on the pot) and it seemed to be stable. It passed with
flying colors both the vinegar test (with strong vinegar) and the dishwasher
detergent test.

What I ended up with are low fire glaze colors in a ^6 firing.

I have one digital picture of 8 of my colored bowls (my first attempt to use
these stain colored glazes, when I wasn't sure how they'd turn out), and
another picture of a small platter using a teal colored stain in that glaze,
that I'd be happy to attach to a private email, if anyone is interested.

Yes, the stain colored glazes by themselves don't have a lot of interest on
a flat piece of clay, BUT the combination of all the stains is very
attractive IMHO, and the teal colored 5 part glaze is great to emphasize
texture and carving, in the same way that Chinese celadon glazes pooled on
clay. (My colors are not trying to imitate celadon.)


Back in Pittsburgh for about 5 weeks

----- Original Message -----
From: "Paul Lewing"
Sent: Friday, July 19, 2002 10:01 PM
Subject: Re: Stable is not industrial (obviously)

> on 7/18/02 7:38 PM, Ron Roy at ronroy@TOTAL.NET wrote:
> > Pete and I go way back - we were
> > glaze doctors at the New Orleans NCECA many moons ago. He has always
> > stable glazes are uninteresting - I'm just surprised he is still saying
> Hi, Ron. I've heard Pete make a statement that was almost, but not quite,
> this. I believe what he's always said was that many of the most
> glazes have at least one element that is outside the traditional limit
> formulas. I'd have to agree with him on that, but that also in no way
> that they're not stable. Your Waterfall Brown glaze, for instance, has
> more boron than most limit formulas say is OK, and it's stable. And Tony
> Hansen's 5x20 glaze is way outside the limits for CaO. I didn't see the
> original post that started this discussion, so I don't know exactly what
> Pete was quoted as saying, but I'd like to make this distinction.
> Paul Lewing, Seattle
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