Native Soil on fri 6 aug 99
Hi, I'm looking for a reliable cone 6 clear glaze to be used in a classroom
setting. Will be firing in an electric kiln. Any input will be
appreciated.
Thanks, Katie
irishjim@aol.com on sat 7 aug 99
<990806.112301.edt.lstown-@ukcc.uky.edu> wrote:
original article:http://www.egroups.com/group/clayart/?start=49503
> ----------------------------Original message-------------------------
---
> Hi, I'm looking for a reliable cone 6 clear glaze to be used in a
classroom
> setting. Will be firing in an electric kiln. Any input will be
> appreciated.
> Thanks, Katie
>
> Here is one of two clear glazes I use at cone 6 in an electric kiln
only for oxidation. Both uses basic readily available materials.
#1
Clear Only - Best when used as just a clear glaze. Will ture slightly
grey in gas reduction firing.
Silica 31%
Nepheline Syenite 30%
Gerstley Borate 21%
Kaolin (EPK) 10%
Wollastonite 8%
----
100%
#2 Clear
This can also be used to development transparent blue to celedon to
green glaze. This glaze is higher gloss that Clear #1. Also uses very
basic materials. Oxidation only. I originally obtained the base formula
from internet. Color experiments are mine.
Base clear glaze
Gerstley Borate 50%
Kaolin (EPK) 17.5%
Silica 32.5%
Shades of blue - .5% to 2% Cobalt Carbonite (less is lighter more is
darker).
5% Manganese Carbonate
Celadon blue-grey - .5% Cobalt Carbonate
4% Chrome Oxide
5% Tin Oxide
(I forgot the Cobalt once and still looked good just
less blue)
Celedon green-grey - .5 to 1% Copper Carbonate
4% Chrome Oxide
5% Tin Oxide
Good Luck
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