I just finished reading the thread on duraboard firing.
I applied the rigidized on all six sides; let it dry for two days; fired it to 1450. I opened the kiln this morning and the board is all blotchy. Charlie says if it's not white, flip it over and fire it again.
I flipped it over and the other side is all blotchy also.
Is this thing suppose to end up white or did I not put enough rigidizer on it?
Judy
Duraboard
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Re: Duraboard
White means that the binders are burned out. Blotchy, not quite burned out.Judy Schnabel wrote:I just finished reading the thread on duraboard firing.
I applied the rigidized on all six sides; let it dry for two days; fired it to 1450. I opened the kiln this morning and the board is all blotchy. Charlie says if it's not white, flip it over and fire it again.
I flipped it over and the other side is all blotchy also.
Is this thing suppose to end up white or did I not put enough rigidizer on it?
Judy
The way I have always approached burnout is to fire to whatever temp you plan to use the board at. If you are a comber, go to 1700. If you fire at 1500, go there...
Bert
Bert Weiss Art Glass*
http://www.customartglass.com
Furniture Lighting Sculpture Tableware
Architectural Commissions
Bert Weiss Art Glass*
http://www.customartglass.com
Furniture Lighting Sculpture Tableware
Architectural Commissions
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