The next project was to polish all the metal parts...tuning pins, hitch pins, screws, and bridge wire. I do this with a wire wheel in my ancient tower-type bench grinder. Shown are some crude-but-effective tools that have saved my fingers several pounds of flesh. They're just holders for pins of various sizes. The long one is for tuning pins; it's helped me polish a couple thousand of them. The shorter ones are for bridge and hitch pins.