I highly recommend a flapper sanding wheel. Looks like a grinding wheel with a bunch of pieces of sand paper on it. Can be purchased most anywhere that carry grinding disk. Using a regular grinding disk usually the disk wheel on stop up with smeared aluminum. They do make a grinding disc just for aluminum. You will get a much better job using a sanding pad or a flapper sanding disc.2013 PANTERA 2MERCURY 200 PRO XSMINNKOTA 80LB FORTREX25 fury