Alisa Clausen on wed 2 may 07
Glaze test for
Source Pat Horsley
Credited to
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.
Recipe Name: 1879 Rust Red Cone 6, Redux
Cone: 6 Color:
Firing: Reduction Surface:
Amount Ingredient
28.6 Whiting
17.8 Feldspar--Custer
53.6 Kaolin--EPK
100 Total
Additives
10 Frit--Ferro 3134
4 Iron Oxide--Red
Unity Oxide
.028 Na2O
.067 K2O
.011 MgO
.894 CaO
1.000 Total
.716 Al2O3
.008 Fe2O3
1.946 SiO2
.006 TiO2
.001 P2O5
2.7 Ratio
7.6 Exp
Results:
Dry, underfired, ochre yellow and rust brown surface.
As it was fired in oxidation and not reduction, it could be the cause of
underfired
iron?
Best regards from Alisa in Demark
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