Chuck, no need to, just make sure they're strong enough to bring a tear or two to your peepers. I know it sounds goofy but on my hardened 58C Rockwell 01 steel blades they dull the mirror finish immediately. Chops --- and by the way, if you want to coin finish a colorless frame, rub a little jeweler's rouge onto a craft stick with a felt pad. Won't take out scratches but sure cleans up a colorless gun. Of course, my guns are mostly just American hardware store pieces. Chopper