Sharon31 on thu 31 aug 00
Hi!
Re: Manganese...(granular)
I tested it this way.
I dried my favorite stonware claybody.
two batches, each one 1000 grams.
one batch I added 2% manganese granular 60 mesh
second batch 2% manganese 24 mesh, added water mix well. When the clay was
ready I made some small pieces and fire them.After the bisque you see
nothing.
Than I glazed with different glazes ^6 ox. The clear glazes turned out good.
the others, bad. I believe because the manganese start melt about 1200C.
My conclusion from this test is: To add 0.5 manganese granular, (0.25% 60#
and 0.25% 24#.)Second test was preparing, like the first, maybe a little
less manganese, than wedging uneven into smooth claybody; Result, not nice.
bye
Ababi Sharon
sharon@shoval.org.il
http://www.israelceramics.org/main.asp?what=gallery
http://www.milkywayceramics.com/cgallery/asharon.htm
----- Original Message -----
From: Mary Van Peursem
To:
Sent: Thursday, August 31, 2000 08:23
Subject: Manganese
> I fire cone 6 oxidation and want to know if I can wedge some Mn into
> the clay to get "spots" showing through the glaze. Given the toxicity
> of Mn, are kitchen gloves and mask enough protection? What % Mn
> would be appropiate?
>
> Thank you,
> Mary Van Peursem
> Duck Lake Pottery
> Springport, Mi 49284
>
>
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