Vince Pitelka on fri 11 mar 05
I'd like to toss this question out to all soda firers in the Clayart =
membership. Do you add borax to the sodium carbonate solution when you =
charge, and if so, what impact does it have on the kiln over time. Some =
of my students have done this in the past, but we generally build soda =
kilns that use softbrick except in the most high-impact areas, and I am =
concerned that the addition of borax in the solution will cause greater =
breakdown of the softbrick. Borax (sodium borate) is after all a more =
volatile flux than soda ash (sodium carbonate).=20
Thanks -=20
- Vince
Vince Pitelka
Appalachian Center for Craft, Tennessee Technological University
Smithville TN 37166, 615/597-6801 x111
vpitelka@dtccom.net, wpitelka@tntech.edu
http://iweb.tntech.edu/wpitelka/
http://www.tntech.edu/craftcenter/
Louis Katz on sat 12 mar 05
It makes harder slag on my SiC shelves. It seems harder on my floor
near where we introduce it. I suspect it interferes slightly with the
salmon color but am not sure.
Louis
On Mar 11, 2005, at 8:06 PM, Vince Pitelka wrote:
> I'd like to toss this question out to all soda firers in the Clayart
> membership. Do you add borax to the sodium carbonate solution when
> you charge, and if so, what impact does it have on the kiln over time.
> Some of my students have done this in the past, but we generally
> build soda kilns that use softbrick except in the most high-impact
> areas, and I am concerned that the addition of borax in the solution
> will cause greater breakdown of the softbrick. Borax (sodium borate)
> is after all a more volatile flux than soda ash (sodium carbonate).
> Thanks -
> - Vince
>
> Vince Pitelka
> Appalachian Center for Craft, Tennessee Technological University
> Smithville TN 37166, 615/597-6801 x111
> vpitelka@dtccom.net, wpitelka@tntech.edu
> http://iweb.tntech.edu/wpitelka/
> http://www.tntech.edu/craftcenter/
>
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Lee Love on sun 13 mar 05
Louis Katz wrote:
> It makes harder slag on my SiC shelves. It seems harder on my floor
> near where we introduce it. I suspect it interferes slightly with the
> salmon color but am not sure.
I have mixed baking soda with soda ash. Baking soda is
milder.
--
Le in Mashiko, Japan http://mashiko.org
http://potters.blogspot.com/ WEB LOG
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