WarmGlass.com

Failing memory is a bummer! Some time ago I bought thick fiber board and it has languished on a shelf. Now need a particular size drop out mold and this product would seem ideal. Can't remember about the pre-firing needs, and whether kiln wash is necessary. I await the answers I know are out there Thanks.

Is it the Keiser Lee ?
If so, I don't pre-fire, just cut and smooth with my fingers.
Wear a mask

Me Kim

I don't think it's Kaiser-Lee. The material I have was purchased from Warm Glass but don't see it listed as available now. Am hoping it has the same characteristics as the Kaiser-Lee; may just have to wing it and see what happens. Feel pretty sure this material needed to be prefired. Thanks for replying! Ellen

I started to prefire the boards, the fumes from organic binders most likely will streak the clear glass during the first firing. Make sure the kiln is vented and the area has ventilation, the fumes are nasty. I usually rigidize the board at the same time. I found that it easier to work with the board before you burn the organic binders, the particles in the board stays together better but if you want softer edges on your design than you can fire it first.

Leon

Ellen,

Could it be Cermaguard?

If so, it should be prefired to 1425 or so.

Also, use kiln wash on it.

Judy

I have used an alumina wash on my board before firing. This makes the board more durable and strong. Then fire to 1250 to cure.

Judy Schnabel wrote:Ellen,

Could it be Cermaguard?

If so, it should be prefired to 1425 or so.

Also, use kiln wash on it.

Judy

Thanks, Judy. I searched old papers and confirmed I had bought ceramaguard and that prefiring was necessary but still wasn't sure about the need for using kiln wash.

(Pam - Alumina wash is new to me; will certainly check that out.

I do appreciate all the input and will carry on with more confidence. Ellen