We may earn revenue from the products available on this page and participate in affiliate programs. Learn More › Lawn Mower Blade Sharpeners Comparison Best Overall Best Bang for the Buck Best Drill Attachment Best File Best Angle Grinder Disc Best Bench Grinder Best Belt Grinder Best System How We Tested the Best Lawn Mower Blade Sharpeners What to Consider When Choosing a Lawn Mower Blade Sharpener Tips for Using Lawn Mower Blade Sharpeners FAQs Meet the Tester A dull mower blade cuts poorly and makes it harder to mow, but a lawn mower blade sharpener can fix that problem. For best results, users will want to sharpen mower blades every 20 to 25 hours of mowing. The good news is that sharpening mower blades is an easy DIY maintenance project if you have the right equipment—and there are a wide variety of tools from which to choose, including manual files, power grinders, various jigs, and more.…