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GA6-AR - Alberta Slip Cone 5 Reduction Base Glaze

Modified: 2018-05-24 12:41:12

The same 80:20 Alberta Slip:Frit base recipe that works at cone 6 oxidation also works in reduction

Material Amount
Alberta Slip 1000F Roasted40.00
Alberta Slip40.00
Ferro Frit 313420.00
100.00

Related Information

GA6A glaze (Alberta Slip 80%, Frit 3134 20%) at cone 5R (left) and pure Alberta Slip at cone 10R (right).

GA6A glaze fired at cone 5R on Plainsman M350 and M340.

Ravenscrag Slip GR6-A (20% frit 3134) and Alberta Slip GA6-A (20% frit 3134) glazes on M340 at cone 5 reduction.

GA6-A at cone 5R on Plainsman M370, M350

GA6-A is Alberta Slip raw:calcine mix with 20% frit 3134.

Roasting Alberta Slip at 1000F

Roasted Alberta Slip (right) and raw powder (left). These are thin-walled 5 inch cast bowls, each holds about one kg. I hold the kiln at 1000F for 30 minutes. Why do this? Because Alberta Slip is a clay, it shrinks on drying. Roasting eliminates that, a 50:50 raw:roast mix works well for most recipes having high percentages of Alberta Slip. And 1000F? Calcining to 1850F sinters some particles together (creating a gritty material) while 1000F produces a smooth, fluffy powder. Technically, Alberta Slip losses 3% of its weight on roasting so I should use 3% less than a recipe calls for. But I often just swap them gram-for-gram.

XML to Paste Into Desktop Insight

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By Tony Hansen


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