How is it supposed to feel....

United States
February 20, 2007 3:41pm CST
When you bake pmc, is it supposed to feel hardened when you remove it from the oven? I ask because I am at least a mile over sea level here and the directions on time and temp don't address that. Food recipes need to be adjusted for fluid content and bake time so I am trying to use the directions and evaluate any need for adjustment. Thanks!
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4 responses
@ElicBxn (61149)
• United States
22 Feb 07
You are talking about precious metal clay not polymer clay right? You can't bake precious metal clay in a regular oven, you have to have much higher temps to release the impurities out of it and set it. You can also use a blow torch. If you are talking polymer, I would consider using somewhat longer time in the oven, the higher heat could "burn" the plastics in it.
1 person likes this
• United States
22 Feb 07
I am asking about sculpey, sorry that I wasn't paying attention to the pmc I was typing....lol sculpey II
@ElicBxn (61149)
• United States
22 Feb 07
I've also learned (and I'm at a low altitude) that when it comes out of the oven its still a little soft, it takes cooling to fully harden it. I've seen on the craft shows that thicker objects take longer times, so leaving it in a longer time isn't going to burn it like a higher heat will.
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• United States
2 Mar 07
I do know there is a change in the baking time/temp but off the top of my head I don't remember what it is. I will tell you this much - I am not at high altitude when you first pull a piece out of the oven it is soft. It hardens as it cools. I went and checked on the temp difference for you.... 300F for 30 minutes per 1/4 inch of thickness.
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• United States
22 Feb 07
When I bake polymer clay at 700 feet above sea level (midwest), it is still soft when I remove it from the oven but it hardens as it cools. I've had trouble with overbaking sculpey, though. It gets brown and brittle when you overbake it. I don't think that you need to adjust the time or temp for elevation. Adjust the time for thickness, however, according to the directions.
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@addysmum (1225)
• Canada
15 Mar 07
Polymer clay is soft when it comes out but hardens as it cools. If you put it in ice water it hardens fast and clarifies translucent clay better. I use mostly translucent clay and mix my inclusions in for color so i ice water almost everything. If you make something that needs cutting right out of oven like tube beads then don't ice until after it is cut.