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slumping with stains?

updated sat 8 apr 06

 

Dot Burnworth on wed 5 apr 06


So, I've been experimenting...I've been wedging mason stains into
Miller 66 clay and creating neriage pieces. They're beautiful, but
seem to slump like crazy in the kiln. Do the stains act as a flux?
These are about 1/4 inch thick, 8 inch diameter plates with 3 feet on
them. And the middle slumped and stuck to the kiln shelf. I wouldn't
expect that normally with the same clay. Any thoughts?
Dot

Dot Burnworth
www.sawmillpottery.com

Lynn Goodman Porcelain Pottery on thu 6 apr 06


Yes, some stains can flux out your clay, depending on how much you use.
Have you tried to cut back the percentage? You can also fire a bit
cooler--if the clay is slumping you won't underfire it by cutting back
1/2 to one full cone. Are you applying a glaze over the clay? You may
want to try a different glaze as well.

Lynn



On Apr 5, 2006, at 11:23 PM, Dot Burnworth wrote:

> So, I've been experimenting...I've been wedging mason stains into
> Miller 66 clay and creating neriage pieces. They're beautiful, but
> seem to slump like crazy in the kiln. Do the stains act as a flux?
> These are about 1/4 inch thick, 8 inch diameter plates with 3 feet on
> them. And the middle slumped and stuck to the kiln shelf. I wouldn't
> expect that normally with the same clay. Any thoughts?
> Dot
>
> Dot Burnworth
> www.sawmillpottery.com
>
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Lynn Goodman
Fine Porcelain Pottery
548 Court St.
Brooklyn, NY 11231
718-858-6920
Cell 347-526-9805
www.lynngoodmanporcelain.com

David Hendley on thu 6 apr 06


In a word, yes, some stains can act as a flux in a claybody.
I don't know how to tell in advance which ones are more
prone to fluxing the claybody, maybe someone else has
some guidelines.
David Hendley
Old Farmhouse Pottery
david@farmpots.com
http://www.farmpots.com


----- Original Message -----
> So, I've been experimenting...I've been wedging mason stains into
> Miller 66 clay and creating neriage pieces. They're beautiful, but
> seem to slump like crazy in the kiln. Do the stains act as a flux?
> These are about 1/4 inch thick, 8 inch diameter plates with 3 feet on
> them. And the middle slumped and stuck to the kiln shelf. I wouldn't
> expect that normally with the same clay. Any thoughts?
> Dot

Elizabeth Priddy on fri 7 apr 06


Whole snip or this won't make sense.

Didn't Chris Campbell have a thread on needing to make
bowls to fire her porcelain dishware in? And she also recently
remarked on mason stains as the right tool for coloring a body.

Any relation? Chris?

E

David Hendley wrote:
In a word, yes, some stains can act as a flux in a claybody.
I don't know how to tell in advance which ones are more
prone to fluxing the claybody, maybe someone else has
some guidelines.
David Hendley


----- Original Message -----
> So, I've been experimenting...I've been wedging mason stains into
> Miller 66 clay and creating neriage pieces. They're beautiful, but
> seem to slump like crazy in the kiln. Do the stains act as a flux?
> These are about 1/4 inch thick, 8 inch diameter plates with 3 feet on
> them. And the middle slumped and stuck to the kiln shelf. I wouldn't
> expect that normally with the same clay. Any thoughts?
> Dot


Elizabeth Priddy

Beaufort, NC - USA
http://www.elizabethpriddy.com

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