SUBSCRIBE clayart Anonymous on thu 14 may 09
Cheryl Craigie wrote:
>Calli,
>
>Try this baby in the electric!
>
>Steve Irvine Iron Red Cone 10
>
Thanks, I'll try it!
Calli
Michael McDowell on thu 14 may 09
Calli,
The red iron oxide you are using may be the source of your trouble. If that
formula that John sent you is also problematic, you might try doing a line
blend varying the iron content from about half to about 1.25 times the
recommended iron content. It's also possible that your talc is one that is
relatively high in calcia at the expense of magnesia. For that problem, a
line blend subbing increased amounts of talc with decreased whiting (and
silica)could be fruitful.
Michael McDowell
Whatcom County, WA, USA
michael@mcdowellpottery.com
http://www.McDowellPottery.com
Cheryl Craigie on thu 14 may 09
Calli,
Try this baby in the electric!
Steve Irvine Iron Red Cone 10
41.72 - Kona Soda Feldspar
22.24 - Silica
7.34 - Talc
6.45 - EPK Kaolin
10.23 - Bone Ash
6.45 - Whiting
5.56 - Magnesium Carbonate
11.12 - Red Iron Oxide
John Britt
www.johnbrittpottery.com/wks.htm
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