How to Sharpen a Lawn Mower Blade Without Removing It

I sharpened a lawn mower blade without removing it, using a rotary tool with an aluminum-oxide grinding stone attachment. This is a simple DIY touch-up method for cleaning up the cutting edge while following the original bevel of the blade. I also emptied the excess gas before tipping the mower, disconnected the spark plug wire, and used gloves and eye protection. The safest full method is to remove the blade, sharpen it off the mower, balance it, and reinstall it properly. This video shows a quick touch-up method for people who want to sharpen the blade while it is still on the mower. If your blade is bent, cracked, badly chipped, or the mower vibrates after sharpening, remove the blade and replace it or have it sharpened and balanced properly. #surplusdiy #lawnmowerrepair #diyrepair