Janis Young on fri 6 sep 02
Hi Ron--
I read in your book that glazes containing zinc oxide
shouldn't be used in reduction. I have a few glazes
I've mixes up dry in small batches but haven't tested
yet. I plan on firing ^10 reduction.
One of them is Ice Blue Celadon I got out of the last
issue of CM (June/July/Aug) in an ad on page 8. It's
listed as ^10 reduction and has 3.01% zinc oxide. Now
I'm wondering if I should test it or not.
Janis
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iandol on sat 7 sep 02
Dear Janis Young=20
This glaze also contains Frit 3134. This may fuse and seal the glaze =
surface before reduction commences. If this is so, then Zinc oxide may =
start to dissolve and act to modify the ensuing melt, changing viscosity =
and other characteristics. Once in solution Zinc oxide will not be so =
susceptible to the effects of the reducing gases.
Must say, when I looked at this the first time I questioned the idea of =
it being a Celadon, though it is an attractive glaze.
Best regards,
Ivor Lewis=20
Ron Roy on sat 7 sep 02
Hi Janis,
Yes you should and also mix them up with no zinc - tell us what happens -
we want to know.
RR
>I read in your book that glazes containing zinc oxide
>shouldn't be used in reduction. I have a few glazes
>I've mixes up dry in small batches but haven't tested
>yet. I plan on firing ^10 reduction.
>
>One of them is Ice Blue Celadon I got out of the last
>issue of CM (June/July/Aug) in an ad on page 8. It's
>listed as ^10 reduction and has 3.01% zinc oxide. Now
>I'm wondering if I should test it or not.
>
>Janis
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Phone: 613-475-9544
Fax: 613-475-3513
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