Rick Malmgren on mon 1 apr 96
Debi,
Here are a couple of recipes for Emily's Purple.
Emily's Blue Glaze C8
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CUSTER FELDSPAR..... 32.00 31.07%
GERSTLEY BORATE..... 17.00 16.50%
OM#4 BALL CLAY...... 15.00 14.56%
TALC................ 13.00 12.62%
FLINT............... 13.00 12.62%
DOLOMITE............ 6.00 5.83%
*ZIRCOPAX............ 4.00 3.88%
*Cobalt Carbonate.... 3.00 2.91%
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103.00
Emily's Blue Cone 6
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CUSTER FELDSPAR..... 34.00 34.00%
GERSTLEY BORATE..... 18.00 18.00%
OM#4 BALL CLAY...... 11.00 11.00%
TALC................ 14.00 14.00%
FLINT............... 10.00 10.00%
DOLOMITE............ 6.00 6.00%
*ZIRCOPAX............ 4.00 4.00%
*Cobalt Carbonate.... 3.00 3.00%
==========
100.00
We use the second one at cone 6 in reduction, and it gives a beautiful
bright purple. I have also done a series of color variations on the base
glaze replacing the cobalt. The most promising of those was the one using
6% rutile. It gave a warm tan-yellow. The outstanding quality of the glaze
(aside from the purple, of course) is the smooth texture and its reliability.
Rick
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Rick Malmgren email r-malmgren@sjca.edu
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