How to sharpen your lawn mower blades – safest method to achieve perfectly cut grass


Sharpen the blade

There are several ways to sharpen a lawnmower blade, though the goal is always the same.

A lawnmower blade should be sharpened until it resembles a butter-knife, and can be done by hand using a bastard file.

To sharpen using a file, start by clamping it in a vice to hold it securely.

Run the file across the blade edge in one swift motion, in the same direction as the original cutting bale angle.

You should do this with pressure, though take care not to slip off the blade as you move the file.

Repeat the filing motion in one direction until you are satisfied with the sharpness.


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