How deep is the mold? It

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#13332
CJAlex
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How deep is the mold? It would help if I had a better idea of what the mold looks like.

What COE glass are you using? Opaque? Transparent? It makes a difference.

Bullseye will typically say it’s safer to add time rather than increase the slumping temp. However, it’s also better to not go above 1200 if holding for a long time. When I have a long hold for a stubborn slump, I set my top temp at 1190 (also recommended by Bullseye). I’ve held it there as long as an hour. ┬áIf you keep the temp this low, you shouldn’t have any problems with a long hold.

I have a fiber kiln, and the only variation I need to make in standard firing schedules is the cool down phase after annealing, particularly if I am creating a piece that is thicker than the typical 6mm (1/4 inch). Letting the kiln cool as fast as it can is too fast in a fiber kiln in many cases. Also, if using Bullseye glass, the current recommended annealing temp is 900.

All the temps I mentioned are different if you are using COE 96.

I hope I didn’t add confusion to all this.

Connie

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