how do i cook sculpey clay in the toaster?
The facing is merely a 'vapor barrier'You can remove the facing by peeling it off, then unrolling the new insulation directly over top of itThe facing will trap moisture and cause mold to grow if covered.
TJ makes a good point about the location of the facing in regards to the location of insulationMy guess is that the faced fiberglass batts aren't taped which means that the vapour barrier isn't continuousI recommend peeling as much of the facing back as you can or at least cutting slits in the facing all over so it isn't a true vapour barrierThis would still allow any moisture to flow across the facing and still maintain the insulating value of the current faced battsIf you want to do things right, remove it all and start over.
According to Sculpey packaging, 30 minutes per 1/4 inch at 275F, though personally I tent my pieces with aluminum foil and bake twice as longMake sure that your oven temp is proper, using an oven thermometer - you wouldnt believe how off they often are! A toaster oven does the same job as a regular oven, just make sure the temp is correct with an oven thermometerMost artists working with polymer clay, including myself, have a dedicated toaster oven for our clay in studio.
