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ash glazes and element life

updated thu 14 dec 00


Wesley C. Rolley on wed 13 dec 00

I am learning by experience that the use of ash glazes in an electric kiln
can affect element life. I have a Skutt cone 10 rated kiln. I have been
firing with glazes constructed using unwashed fireplace ash (90% local type
of pine called "Digger Pine") I use an unwashed ash that has some
charcoal dust, a source of C0. It is now difficult to reach cone 10 and I
have had to adjust my firing profiles accordingly. I still fire to cone 9
at 6:00, but do so with a 30 minure soak at top temperature. When I do
eventually replace them, it is time to call Florida for some ITC...

One additional question: would vapors from the souluble alkalines in the
glazes also attach the elements? It seems that they would.

Wes Rolley

"Happiness is to be fully engaged in the activity that you believe in and,
if you are very good at it, well that's a bonus." -- Henry Moore