I sharpened my first Weed Eater lawn mower the other day. It was a bit different from most that I have done. The blade was stamped "French" on it and one side was typical of a mulching blade, but the other side was more of a flat blade. I sharpened the mulching side first, then scratched my head as to how I was going to do the other side. Luckily, I had read on the forum that the MM8000 can just be turned around and the blade sharpened from the back side. Worked great, customer satisfied and money in the bank. I do wonder why the blade is sharpened on a side that doesn't come in contact with the grass? I'm getting more and more customers and all are saying that they see a difference in the appearance of their lawns after using a freshly sharpened blade.