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Old December 25th 07, 10:21 PM posted to rec.crafts.glass
Moonraker[_2_]
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Posts: 186
Default Another wannabe Basement Bandit....


wrote in message news:839d1ced-7327-46bb-aaab-
Moonraker....

Seeing as how the "experts" on the WG board weren't able to adequately
answer your questions, I'll give you a little Christmas present. From
our extensive experiments with short span slumps on weaving molds, we
learned that the usually suggested slump times and temperatures didn't
work on short spans. Here's a schedule that has always worked for us
on single layer Spectrum (fusible or not):

1. 500 dph to 1000 hold 20 min
2. 900 dph to 1265 hold 60 min (it takes that to complete the slump)
3. 1200 dph to 1300 hold 6 min (to fire polish the edge - the glass
can ramp faster but the mold can't)
4. FAP to 960 hold 60 (anneal)
5. 500 dph to 100 OFF

If you want to try it on architectural glass, increase all top
temperatures by 50 degrees and fire polish hold time to 7 min.
If your kiln provides relatively even heat and you want to push
firing times for multiple firings each day, you can increase the ramp
speed as high as 750 dph. Take care to be sure your mold isn't
sitting on the kiln shelf but is propped up to allow air flow beneath
it.

Merry Christmas


Thank you.


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