Thanks, i definately wouldn't use a grinder. i would dress it by hand with a file or various grits of paper then polish...the surface i use is and inch or so thick piece of granite, with a sort of hard piece of rubber on it. might be the rubber is the problem. i'll try a piece of wood instead. one would think that with what these tools cost they would be set up right. the arch punches are not new, but the bag punch is..... also a few of the arch punches have a slight flat spot as if had been if dropped. i was trying to think of something tapered i could drive in there it round them out.... any suggestions?