Electric Mid&Hi Fired Ceramics
Potters & Sculptors - Making Rock from Mud
Artificially reduced SCM #2
Cone 8 - SCM artificially reduced with Silicon Carbide. SCM+1%SiC, Hanna's Fake Ash, Jen's Juicy Fruit without iron.
Albums: Electric Reduction
Comment
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Comment by Anthony Andersen on April 28, 2011 at 4:36pm
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If you add Silicon Carbide to certain glazes in very small amounts (usually 1% or less), you can get reduction (gas kiln) effects in an electric kiln. What happens is the Silicon Carbide molecule breaks down into a Silicon and a Carbon atom around earthenware temperatures. The Carbon atom steals an oxygen atom or two from a nearby compound (usually a metal oxide) forming Carbon Monoxide or Carbon Dioxide. This works in an electric kiln because the Carbon is mostly trapped in the glaze until it finds some oxygen from a metal in the glaze and only then bubbles out leaving reduced metals trapped in the glaze. It seems to work particularly well with copper containing glazes, but I've had good luck with SCM.
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Comment by martha peddicord on April 28, 2011 at 3:25pm
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GREAT pots. Anthony.
What does' artificially reduced with silicon carbide' mean?
Next firing, I'm going more your way than the rate SH gave me. Some people at my school are using the scm under the MC6 glazes and getting tolerable results, they aren't using enough over glaze to cover the strontium. Steven Hill says use the strontium as 80% of the total glaze thickness. Then layer the modifiers.
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