Most resin still has the mold release coating on it, and the most often used method to remove it is an overnight soak in Wesleys Bleach-Wite, a white wall tire cleaned found in the automotive section of most marts, or your local auto parts store. A light scrubing with an old toothbrush and a good rinse and you should be ready to go. Resin will take any primer and paint but you must use epoxy or super glue because the regular model glues wont work.