Hi guys, I've been looking for a good sealer for my polymer clay jewerly. I make necklaces out of white Fimo pro polymer clay and paint them with Amsterdam acrylics. They need to be able to handle being used, so I need a good sealer. I tried a type of epoxy resin and it didn't get hard - i suspect this is because of the plasticizer in the polymer clay? Anyone who can help me out?