Alisa Clausen on tue 29 apr 03
Glaze test for Violet Glaze, cone 6, ox.
Glaze tested on white midrange stoneware fired in electric oxidation to =
1220c.
Source:
Credited to:
Firing ramp:
100c p/h to 600c (212f - 1112f)
150c p/h to 1100c (330f - 2012f)=20
100c p/h to 1220c (212f - 2228f)
5 min. soak
cool down 80c per hour to 800c
shut off kiln
Recipe:
41.40 Neph. Sye.
11.70 Dolomite
5.40 Magnesium Carb.
4.50 Whiting
27 Quartz
10 Gerstely Borate
ADD
2.0 Cobalt Carb.
Note: All raw materials are measured up or down to the nearest whole =
decimal. =20
Colorants or additives to a 100 gram test batch are measured in percent =
to the 100 gram test batch.
Substitutions:
Local Frit for Gerstely Borate
Results:
A semi gloss light blue to violet glaze. Better covering where thicker =
and smooth.
Regards from Alisa in Denmark
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