How to Use a Bench Grinder to Sharpen Tools: Complete …
Take one half and start up your bench grinder. Do not try to sharpen the inside flat edge. This will weaken the blade. Sharpen the outside bevel edge like you would any mower blades Unplug the mower or remove its spark plug first. Then turn the mower over and remove the blades. Make a note of which side is up.
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