Craig Martell on thu 21 dec 00
At 09:04 AM 12/21/2000 -0500, you wrote:
>Craig: What is the firing range & type for this (under)glaze????
>
>Crowell's Black
>
>Albany or Alberta slip 170
>om 4 ball clay 69
>cobalt oxide 50
>chrome oxide 25
>
>Brush, spray, or pour this on as an underglaze. It's a very deep, dark blue
>to black.
Hi:
This recipe was developed and used for salt glazing by Victoria Crowell. I
think she's in New York State.
I use it at cone 10 in salt and as an underglaze in the reduction kiln. It
will probably function well as an underglaze only, down to cone 6. Be sure
to put a good stable glaze over this stuff to prevent leaching. In the
salt kiln, I only use it on the outsides of pots. In the other kiln, I put
highly fused, silica rich glazes over.
hope this explains, Craig Martell in Oregon
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