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#11
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| On Thu, 26 Aug 2004 23:49:05 GMT, "Jason" wrote:
Well I tried baking three pieces 1/4" think for reference. All the pieces came out semi-hard after 20min and hardened a bit more after cooling but are not brittle. It is hard enough for the purpose I need but the biggest disappointment is that the color changed a lot. It started as white but is now beige with dark splotches here and there. One was baked at 265F, one at 275F, and the third at 300F all for 20 min and all look the same. I have a very old oven though and I suspect that is the culprit, is what I described a product of over-baking or charring? Also I was under the impression that it would be brittle like glass, instead it is like very hard rubber. Like I said that will work but is that how it is supposed to be? I may take a trip to a local thrift store this weekend in search of a toaster oven to test it in. Thanks See my other post about oven thermometers and foil tenting. Sometimes discoloration just happens and can't be avoided with plain Sculpey. Then it makes sense to just paint it. A coat of white acrylic gesso applied without thinning makes a good base and being white may be all you need. Helen "Halla" Fleischer, Fantasy & Fiber Artist http://home.covad.net/~drgandalf/halla/ Balticon Art Program Coordinator http://www.balticon.org |
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#12
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See my other post about oven thermometers and foil tenting. Sometimes discoloration just happens and can't be avoided with plain Sculpey. Then it makes sense to just paint it. A coat of white acrylic gesso applied without thinning makes a good base and being white may be all you need. Helen "Halla" Fleischer, Fantasy & Fiber Artist http://home.covad.net/~drgandalf/halla/ Balticon Art Program Coordinator http://www.balticon.org Thank you for all your insight, it's appreciated. |
#13
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An oven thermometer is a very worthwhile investment. It also helps to line the tray with cardboard and tent foil over the work. Rubbery is better than brittle, but brown splotches mean too much heat. Helen "Halla" Fleischer, Fantasy & Fiber Artist http://home.covad.net/~drgandalf/halla/ Balticon Art Program Coordinator http://www.balticon.org Thanks. I just tried a fourth piece using cardboard on the tray and foil over top. I also turned the stove down 25 degrees and the result was the same very hard rubber firmness and almost exactly the same color as when I put it in. |
#14
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| On Fri, 27 Aug 2004 03:05:38 GMT, "Jason" wrote:
An oven thermometer is a very worthwhile investment. It also helps to line the tray with cardboard and tent foil over the work. Rubbery is better than brittle, but brown splotches mean too much heat. Thanks. I just tried a fourth piece using cardboard on the tray and foil over top. I also turned the stove down 25 degrees and the result was the same very hard rubber firmness and almost exactly the same color as when I put it in. That sounds a good result then. This is vinyl we're working with, so it's always going to be a bit rubbery. Brittle is a relative term with this stuff. Helen "Halla" Fleischer, Fantasy & Fiber Artist http://home.covad.net/~drgandalf/halla/ Balticon Art Program Coordinator http://www.balticon.org |
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