Alisa og Claus Clausen on sun 10 feb 02
Glaze test for: Xavier Warm Jade Green, revised, cone 6, oxidation.
Source:www.Frogpondpottery.com
Credited to: Revision by Ron Roy
All tests fired on white, iron flecked, mid-range stoneware.
Fired to cone 6 (1220c) in oxidation.
Firing ramp:
100c (212f) per hour to 600c (1112f)
150c (302f) per hour to 1100c (2012f)
100c per hour to 1220c (2228f)
15 - 30 minute soak depending on matts and glosses used.
cool down 100c per hour to 900c.
Natural cool down to 150c (approximately 15 hours)
Recipe:
22 Custer Spar
16 3134
12 Whiting
9 Talc
20 EPK
21 Silica
ADD
Copper Carb.
5 Rutile
Note:
All raw materials measured up or down to nearest whole decimal.
Oxides used on percent basis to a 100 gram batch of glaze.
Substitutions:
Forshammer Spar for Custer Spar.
Resulted in:
A fluid but not dripping, glossy light jade green glaze that is
transparent. Where thickest, the glaze moved and streaked with lighter a
celedon like green. A single whitish streak where very thick.
Regards from Alisa in Denmark
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