Pat Chesney on fri 14 mar 97
Hi to all you wood-fire types. I am trying to find some kind of glaze that
will trap carbon and wood ash to give the effects of wood firing without
requiring the cone 11 or 12 heat. We love the look, but we could have been
finished firing 5 hours earlier at cone 6 (:>)
Are there food safe glazes that would help us lower our temperature target
some. We custom mix clay bodies so that isn't an issue to us. The big deal
is lowering the temperature if possible and keeping the look of the blush
and lovely brown flashing. We would like a target below cone 10 if it is
possible.
We are celebrating! After 4 months of trials and adjustments-Tuesday, we
reached cone 11 flat in 11.5 hours in our new 125 cu ft. kiln firing with
just wood. (Double Boury box, downdraft, flat top, car kiln).
Pat Chesney
Pat-Chesney@easy.com
Waco, Texas
Dannon Rhudy on sun 16 mar 97
Pat,
Below, a couple of carbon-trap glazes. They are ^9, however.
Don't have any for specifically ^6. But ^9 is a bit better
than ^12; a few hours, perhaps. And you could try altering
for lower temp.
Carbon Trap: Cone 9-10, Reduction
75 neph sy
8 soda ash
7 lithium Ox.
5 EPK
5 Flint
Works well in soda and salt kilns, too. You might try sifting
some ash directly onto the work after glazing, to implement the
fly ash in the kiln. I've done that with good results, in heavy
reduction.
Gustin Shino (rev.), ^9-10 reduction, this is from Val Cushing
handbook:
45 neph sy
ll Kona spar
15 Spodumene
15 Ball Clay
10 Calcined Kaolin (I just use non-calcined EPK)
4 Soda Ash
This is a beautiful, rich glaze in moderately heavy reduction.
I've used it on both porcelain and stoneware; very reliable.
On porcelain without good reduction, looks a bit like pumpkin
pie mixture before it is baked......not ugly, but bland.
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message----------------------------
Hi to all you wood-fire types. I am trying to find some kind of
glaze that
will trap carbon and wood ash to give the effects of wood firing
without
requiring the cone 11 or 12 heat. We love the look, but we could
have been
finished firing 5 hours earlier at cone 6 (:>)
Are there food safe glazes that would help us lower our
temperature target
some. We custom mix clay bodies so that isn't an issue to us. The
big deal
is lowering the temperature if possible and keeping the look of
the blush
and lovely brown flashing. We would like a target below cone 10 if
it is
possible.
We are celebrating! After 4 months of trials and
adjustments-Tuesday, we
reached cone 11 flat in 11.5 hours in our new 125 cu ft. kiln
firing with
just wood. (Double Boury box, downdraft, flat top, car kiln).
Pat Chesney
Pat-Chesney@easy.com
Waco, Texas
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