How To Fix Moonies And Other Imperfections In Cured Polymer Clay? Moonies in polymer clay are white spots on the clay and they're shaped as a half moon, a circle, or even a bump. Moonies are just bubbles of air trapped inside the sculpture. These ugly marks can be fixed even though when the clay has been baked or cured. If you have a moonie or moonies in your polymer clay sculpture, don't throw away your piece. It might be a good one. I used to throw away all my pieces with moonies until I learned how to fix them. It's easy and it doesn't show. When your cured piece is cold, look closely at the piece that has a moonie. Take a needle or a pointy knife and poke on the moonie. Just on the moonie. You'll see how easy is to make a little hole. That's because it has a pocket of air underneath. Once you have made a little hole, clean it and make sure there is no debris in there like cured clay. Brush the hole with liquid polymer clay and add a little piece of clay. Fill the hole and smooth. Make sure the seams are perfect and you don't see a bump or a crease there. Bake your piece again, but make sure to cover it all on paper towels. Bake it at the same temperature you always do for at least 30 minutes. When you're finished baking, let it cool. When it has cooled, sand and polish all your sculpture. You are ready to paint and your moonie has disappeared. If you see that the place where you filled in the moonie has a slighter color that the rest of your clay, just add a dab of a darker flesh color on top of the fixed moonie and put it back in the oven to cure when you have finished painting or if you can, put a little bit of red blush, like a skin mark.