Similar to the file method, keep the number of strokes even on both ends of the blade to maintain the blade's balance. Using A Dremel Grinder For Sharpening Lawn Mower Blades While a Dremel rotary ...
Note that if you’re an advanced DIYer, you could try sharpening the blade yourself using a metal file or a bench grinder. John Galeotafiore, who manages lawn mower testing at Consumer Reports, says ...