buffing wheel

Also, you'd be far better off at much lower speed than a typical modern direct drive bench grinder. Look around your Craigslist, etc, garage sales, for a half wore out old belt drive, homemade setup with what many call an "arbor" similar to this:

With a junker 1725 motor instead of the 3450 RPM on a direct drive, and playing a little with pulley size you can slow it way down. Sometimes you can put the pulley on the side to get room for a larger one if you only need one wheel





But for that big stuff....................