Ron Roy on fri 10 sep 04
Hi Bill,
I would say just spread it out on a table for a few days - certainly do not
go over 800C as the fluxing action of KNaO starts about then.
If you need it faster - maybe just leave it in a kiln or oven at 100C till
it's dry. You can tell - if in a kiln - you open the top and bottom spy and
hold something at the top spy to see if there is any water condencing -
like on a mirror or even a shiney spoon.
The more spread out it is the faster it will dry.
I've had mine for 30 years now - it's dry as a bone - but still lumpy.
RR
>Ron wrote:>I can remember - getting my first bag of Cornish Stone -
>it was wet - and lumpy.<
>
>I have a unopened bag that I can feel is lumpy and I have a plastic
>jar with Cornwall Stone that looks like a greenhouse, water beaded up
>on the inside.
>Can this material be dried out in a ^06 bisque, or is that too high a
>temperature?
>How about just red heat (1200=B0F)?
>
>Bill
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Phone: 613-475-9544
=46ax: 613-475-3513=20
Ivor and Olive Lewis on sat 11 sep 04
Cornish Stone will start to sinter round about 620=BA C given a fusion
temperature of about 1200=BA. So at calcining at 800=BA c could result in
gritty material.
Ivor Lewis.
Redhill,
S. Australia.
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