How to Sharpen a Lawn Mower Blade With a Dremel Tool


A Dremel tool is a very handy tool to have around the home. With its many attachments, you can perform a multitude of tasks, such as sharpening your lawn mower blade. After repeatedly mowing your lawn, the blade will slowly dull. A dull blade will rip your grass instead of cutting it cleanly, which can allow fungus and disease to penetrate the lawn. Sharpen your lawn more blade at least once a year to keep your lawn healthy and to reduce wear and tear on your lawn mower.

Step 1

Remove the lawn mower blade according to the removal instructions in the operation manual. A typical lawn mower has a single bolt that holds the blade onto the engine shaft.

Step 2

Clean the lawn mower blade with a steel brush. Scrub it thoroughly to remove old grass debris and rust.

Step 3

Clamp the lawn mower blade down in a table vise. Install the sharpening attachment into your Dremel tool.

Step 4

Turn the Dremel on and sharpen the lawn mower blade following the blade's original bevel as close as you can. Sharpen until the edge is smooth, clean and free of nicks.

Step 5

Remove the blade from the table vise and balance it in the exact middle. Look to see if it tips in a certain direction. If it does, clamp it back down into the table vise and remove a little more material from the heavy side. Check for balance again and repeat as necessary.

Step 6

Reinstall the lawn mower blade on to the lawn mower. Start the lawn mower and ensure there is no rattling or vibrations--signs of an unbalanced blade.

Tips and Warnings

  • Wear gloves when handling the lawn mower blade. The blade's edge is very sharp and will cause severe cuts.

Things You'll Need

  • Steel brush
  • Table vise
  • Dremel tool
  • Sharpening attachment
  • Protective gloves


  • Mower FAQ: How to Sharpen Lawn Mower Blade and Maintain a Clean Cut Lawn
Keywords: lawn mower blade, Dremel tool, sharpen mower blade

About this Author

Robin Gonyo has been writing for several years now. She has a deep love for gardening and has spent a vast amount of time researching that subject. Previously she has written for private clients before joining Demand Studios. She hopes to share her knowledge with others through her writing.