i have a metal shape i want to use as a mold but am not sure what type of metal it is and it has a painted surface. i don’t care if the paint burns off but don’t want to ruin my kiln or my glass. is there any way to figure out if this is safe for me, my kiln and my glass to use?
burn off the paint and see if the metal will withstand the heat. If you are really concerned about damage to your kiln, don’t do it. I don’t think there is much risk.