So, this is the machine I use. I bought this when I decided that I was really going to get into doing this. I use 10 inch wheels and use Tripoli on the initial breakdown and cutting of the layer on these parts. Before that, however, I have to sand out any imperfections or gouges using different levels of wet/dry sandpaper. For the shaving of these forks, I cut them off with a cut off wheel attached to my grinder and then ground them down using a flap wheel. Once they are level, I used 220, 500, 800, 1200, and 2000 grit wet sandpaper and then I used the Tripoli. After I get them shined up, I put the final touch on by using white rouge.