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New molds
Posted: Wed Jul 09, 2003 9:44 pm
by cindabr
I bought some a couple molds. 2 plates and a bowl. The bottom is stamped with........... Do not heat over 250 degrees/per hour
This seems to me that it'll take forever to get where I want to slump.
Correct or incorrect??
Thanks
Posted: Wed Jul 09, 2003 11:18 pm
by Marty
Actually, that's pretty conservative for a slump, especially if you've got 2 or more thicknesses (1/4"+). I slump 3/8 to 5/8" and have learned (the hard way) to slow slump @ 100dph.
Slow man Marty
Posted: Thu Jul 10, 2003 12:35 am
by Lynne Chappell
Some molds thermal shock rather easily. That's a pretty slow rise. I usually go 300 to 400 depending on the size. But I've cracked lots of molds too.
Posted: Mon Jul 14, 2003 2:09 pm
by Joanne Owsley
Isn't it possible that you'd only have to go that slow up to a certain temp. Then you could increase the ramp rate.
Just a thought.
~Joanne
Re: New molds
Posted: Mon Jul 14, 2003 11:10 pm
by dee
cindabr wrote:I bought some a couple molds. 2 plates and a bowl. The bottom is stamped with........... Do not heat over 250 degrees/per hour
This seems to me that it'll take forever to get where I want to slump.
Correct or incorrect??
Thanks
the kiln goddess is determined to teach patience i think - when in doubt, go slow, i can get a slump into a ceramic mold at 1150 or 1200 deg depending on which kiln i use. i would rather go slow and get desired results than go fast and give the kiln goddess the opportunity to mess with my work ;P
D