I use this sander after planing chainsaw-cut hardwood to get it smooth and ready for finishing. I went through many, many pieces of this raw wood before running the edger too many times. While sharpening my teeth with the Makita sanding belt that came with my sander, I must have made dozens of mistakes while learning how to most efficiently sand wood. Now that I've lent a hand, I ordered this box of 120 grit sanding belts to finally finish my job.