I saw a piece on here about using epoxy resin to coat 2 sets of scales I made from wood. There being some particles in the top layers of the resin after 24 hours, I sanded the scales and tried buffing them to a polish. Instead of polishing them, the scales just seemed to accumulate a sort of sludge that needed to be hand-sanded off. I'm sure that there is something wrong with my technique. Can anyone give me a hand?