Quote:
Originally Posted by wmcgowan
I use a cheap harbor freight grinder ($14 with coupon) tilt my mower up and then grind/sharpen the blades at a 45 degree angle - seems to do the trick
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IMO (from pass experience) using grinder will eventually take off more metal on one side of blades and cause balance problem. I brought the cheap cone balancer to balance blades back out. After that most time I just used big file. Even then I had to balance them out occasionally.