Alisa Clausen on wed 2 may 07
Glaze test for Green Dragon Matt Glaze, Cone 6, Ox.
Source: Ceramic Arts Buyers Guide, 2007
Credited to: Harry Spring
Fired on mid fire white stoneware
Firing ramp with an electric controller is:
100c p/h to 600c (212f - 1112f)
150c p/h to 1140c (302f - 2084f)
80c p/h to 1220c (176f - 2228f)
15 min. soak
cool down max. to 900c (1652f)
Hold 30 minutes
Shut off kiln
Colorants or additives to a 100 gram batch are measured in percent to the
100 gram batch.
Substitutions in this test: Frit 3134 subbed with local Boron Frit,
Feldspar used is Forshammer, Boron Frit is subbed for Gerstley Borate. All
substitutions are done not by Mol. Wts., but gram for gram.
Amount Ingredient
18 Whiting
8 Zinc Oxide
44 Cornwall Stone
3 Kaolin--EPK
5 Bentonite
78 Total
Additives
4 Titanium Dioxide
4 Copper Carbonate
Unity Oxide
.083 Na2O
.052 K2O
.013 MgO
.565 CaO
.288 ZnO
1.000 Total
.262 Al2O3
.005 Fe2O3
1.761 SiO2
.001 TiO2
.005 P2O5
6.7 Ratio
8 Exp
Results:
Mat, green where thickest, browner where thinner. Glaze surface is streaked
and mottled with green streaking over brown and orange brown mottling. A
lot of movement and surface variation, without dripping.
Best regards from Alisa in Denmark
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