On precious resin both red and blue Wenol work, with blue Wenol having finer abrasive bodies and therefore being somewhat gentler; perceptible differences in the end result are small. Since Wenol has not been available in drugstores for years (range cleanup), collectors source it online, even at increased prices. As an alternative, Displex has proven itself; originally developed for mobile-phone and watch acrylic glass, it delivers good results on the precious resin of Meisterstücks; on metal parts such as rings and clip Displex is, however, unsuitable, where Cape Cod or polishing cloths from Greg Stevens are recommended. Since every polish removes material, gold plating should be covered with adhesive tape before application and polishing limited to what is necessary.