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slumping overhang
Posted: Wed Dec 10, 2003 5:48 pm
by tom suter
I am getting ready to slump and oval platter 12" across by 9". Right now it is 3 layers thick about .300 and I have a 1/4" overhang. I have never slump with an overhang do you think this is too much of an overhang and that I should cold work it and get it down closer.
Thanks
Posted: Wed Dec 10, 2003 5:53 pm
by Bob
Hi Tom,
Should be fine. Slump at the lowest temperature possible to minimize the mark that the rim of the mold will leave on the back of the piece.
Cheers,
Bob
Posted: Wed Dec 10, 2003 6:09 pm
by charlie
however, if it does slump a little over the edge, when it cools down, the contracting glass can shatter your mold. damhikt.
for 1/4", i'd probably risk it. however, i have a bowl form that i wheel threw; or actually, i have half of one, on my mold shelf.
Posted: Wed Dec 10, 2003 8:24 pm
by Stephie
Is it better to slump lower for longer to not pick up the texture?
Stephie
Posted: Wed Dec 10, 2003 8:29 pm
by Brock
Stephie wrote:Is it better to slump lower for longer to not pick up the texture?
Stephie
Yes. Try 1150 for 30 minutes. Check it. Brock
Posted: Thu Dec 11, 2003 12:59 am
by Bert Weiss
One rule of thumb is that an overhang that is the same dimension as the thickness of the glass is OK. You can stretch it a bit more with pretty good luck.
I always try to get the job done with lower temp and more time, until impatience sets in and I bump up the temp to get it over with...