How to Sharpen Lawn Mower Blade with Grinder
Disconnect the spark plug, remove and clean the blade, secure it in a vise, then grind along the existing bevel at a 20-30° angle using an angle grinder or bench grinder , moving heel to toe in smooth, even passes. Check blade balance before reinstalling. The full process takes 15-30 minutes and restores a clean cut without shop fees.
