Anji Henderson on tue 7 nov 00
TaPow!!! i found it in the Clayart archives... It was
under
"From: Tamara Reid-McConkey
Subject: Rod's Bod Glaze Request Repost (5/6)"
*Clip*
VC Pam Frederick's
Nepheline Syenite 44
Gerstley Borate 12
Whiting 12
Lithium Carb 6
EPK 13
Flint 13
Add:
Titanium Dioxide 11=25
Copper Carb 6=25
This glaze is great. It=92s listed in VC=92s book as
=5E6-9. I fired it to=
=5E6
oxidation. It is a semi-mat, dark emerald green, that
in sunlight, slightly
shimmers. I, by mistake, once took it to =5E7, and it
lost the shimmer, but
because it boiled and I soaked for a long time trying
to get rid of the
blisters, it got a really nice =93ostrich skin=94 look
to it. That was a
mistake, however, and I doubt I could repeat it.
*End Clip*
Anji
=====
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John Hesselberth on wed 8 nov 00
Anji Henderson wrote:
>TaPow!!! i found it in the Clayart archives... It was
>under
>
>"From: Tamara Reid-McConkey
>Subject: Rod's Bod Glaze Request Repost (5/6)"
>
>*Clip*
>VC Pam Frederick's
>
>Nepheline Syenite 44
>Gerstley Borate 12
>Whiting 12
>Lithium Carb 6
>EPK 13
>Flint 13
>Add:
>Titanium Dioxide 11
>Copper Carb 6
>
Hi Anji,
Just a caution. This glaze will be very unstable. It is very low in
silica and very high in copper. Please don't use it on functional work
without thorough testing. I predict it will leach at least 50 mg/l of
copper. I will bet it will badly fail the vinegar test.
Regards, John
John Hesselberth
Frog Pond Pottery
P.O. Box 88
Pocopson, PA 19366 USA
EMail: john@frogpondpottery.com web site: http://www.frogpondpottery.com
"It is, perhaps, still necessary to say that the very best glazes cannot
conceal badly shaped pots..." David Green, Pottery Glazes
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