Paul Herman on sat 18 sep 04
Greetings Ivor,
The soda ash is dissolved in the glaze slop.
One glaze I use is 18% soda ash, initially dissolved in warm water.
Several others use less.
As the glazeware dries, efflorescense developes on the surface, which
will cause fluxing, and trap carbon.
Sometimes people spray or brush on more soda ash solution, but I don't.
It's fun to play with the evaporation, by waxing or various air
treatments. A desert climate makes it work quickly, before your very
eyes.
Best,
Paul Herman
Great Basin Pottery
Doyle, California US
http://www.greatbasinpottery.com/
----------
>From: Ivor and Olive Lewis
>To: CLAYART@LSV.CERAMICS.ORG
>Subject: Sodiun Carbonate and Shino
>Date: Fri, Sep 17, 2004, 11:41 PM
>
> Could someone please go over the technology again for me. Am I right in
> thinking that the solution is sprayed or brushed on the surface of the raw
> or bisque pot and drying causes the salt to migrate to the outer surface?
> And what degree of concentration is being used; Hot? Cold? Saturated?
> Unsaturated?
> Thanks for any help.
> Best regards,
> Ivor Lewis.
> Redhill,
> S. Australia.
Ivor and Olive Lewis on sat 18 sep 04
Dear Friends,
I must admit I have not paid much attention to the recent debate about =
Shino, but delayed vision did not prevent me from hitting the delete key =
until the thought had sunk in about Wicking bringing the salt to the =
surface of the pot. Suddenly this became very interesting. Don't ask why =
because I can't say.
Could someone please go over the technology again for me. Am I right in =
thinking that the solution is sprayed or brushed on the surface of the =
raw or bisque pot and drying causes the salt to migrate to the outer =
surface? And what degree of concentration is being used; Hot? Cold? =
Saturated? Unsaturated?
Thanks for any help.
Best regards,
Ivor Lewis.
Redhill,
S. Australia.
=20
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