Ditto on the HF buffer, i have one and it works but it is kind of underpowered. I also use a regular dual grinder with the buffing wheels mounted. The grinder has a lot more power, but the shafts are shorter so sometimes the body of the grinder gets in the way. look for buffing wheels that are wider 1" or so, they are a lot easier to use than the narrow 1/2" ones that come with most kits.