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Alberta Slip Cone 5 Reduction Base Glaze

Code: GA6-AR
Modification Date: 2018-05-24 12:41:12
Member of Group: ASR6

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

MaterialAmount
Alberta Slip 1000F Roasted40.0
Alberta Slip40.0
Ferro Frit 313420.0
 100.00  

Notes

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

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

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

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

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

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

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

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

Roasting Alberta Slip at 1000F

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 Insight

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<recipe name="Alberta Slip Cone 5 Reduction Base Glaze" keywords="The same 80:20 Alberta Slip:Frit base recipe that works at cone 6 oxidation also works in reduction" id="99" date="2018-05-24" codenum="GA6-AR">
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<recipeline material="Alberta Slip" amount="40.000" unitabbr="kg" conversion="1.0000" added="0"/>
<recipeline material="Ferro Frit 3134" amount="20.000" unitabbr="kg" conversion="1.0000" added="0"/>
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By Tony Hansen




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