All tests fired to cone 10 with medium reduction at ^012 and a slow cooling. Natural gas downdraft kiln with 20cu ft stacking space. Sprague emerald green is on porcelain and the rest are on stoneware.
EPK 20
Whiting 30
-add-
Copper carb 4
Nepheline Syenite 40.91 %
Soda Ash 17.27
Soda Spar (kona,f4) 9.82
EPK 18.18
Om Ball Clay 13.82
Custer 41
EPK 8
Whiting 21
Silica 30
-add-
RIO 15
Whiting - 15.39
custer 32.69
ball clay 19.23
silica 32.69
-add-
cobalt 2.8 (original is 4.81)
RIO 9.62
Feldspar 36.14
Whiting 15
Gerstly 10.55
Silica 19.65
EPK 7.20
Bentonite 3
-add-
Cobalt carb 4
EPK 9.75
custer 69.00
Gerstly 24.75
silica 30.00
Whiting 19.50
Tin ox 4.50
-add-
iron ox .75
cobalt carb .35
Custer 26.50
EPK 19.50
Whiting 19.50
Silica 34.00
No comments:
Post a Comment