Depends how bad the blades are. I generally try to do the restoration by hand. However if the blade is real bad I use 80, 120, 240 and 400 flapwheels and/or Coarse, Medium and Fine abrasive buffs. At the end of the day you will still have to finish by hand. To finish I use 3M abrasive pads. Medium, Fine, Siperfine, Ultrafine and Microfine. Then go to MAAS and finish with FLITZ.