rballou@mnsinc.com on mon 23 sep 96
I am working on a ^10 stoneware throwing body. Can anyone educate me as to
the relative merits of kyanite and pyrophyllite in preventing thermal shock
problems? Is one better than the other, limit formulas, etc.
Ruth Ballou
rballou@mnsinc.com
Cathy Nelson Hartman on mon 23 sep 96
On Mon, 23 Sep 1996 rballou@mnsinc.com wrote:
> ----------------------------Original message----------------------------
> I am working on a ^10 stoneware throwing body. Can anyone educate me as to
> the relative merits of kyanite and pyrophyllite in preventing thermal shock
> problems? Is one better than the other, limit formulas, etc.
>
> Ruth Ballou
> rballou@mnsinc.com
>
I would like to tag a question on to this . What about the health safety
of using pyrophyllite? It would seem that most of the thermal shock
protecting chemicals such as talc and the two above get that benefit from
their chemical structure-needlelike. Therefore might have breathing
consequences. That is stated as a question, not as a fact. Monona?
Walter Hartman full time studio potter since 1973
cone 10 porcelain
90% functional work
Hartman Pottery oxidation in gas kiln
1600 Willowwood sell all work at art fairs
Denton, TX 76205 work by myself
(817) 382-1083
e-mail: cnh0002@jove.acs.unt.edu
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