Skip to main content
Stesso

Sharpen a Lawnmower Blade (Coarse and Honing Grit)

7:50
10:46
29K views

At 7:50 in

Shave with a lawnmower blade! You’re gonna love this sharpener!

Watch on YouTube

What happens here

Begin by cleaning any loose rust or debris from the lawnmower blade using a sanding sponge. This helps prevent contamination of the abrasive belts. Secure the lawnmower blade firmly in a vise. Next, remove the knife sharpening guide from the Work Sharp tool by simply lifting it off. Install the 80-grit (coarse) abrasive belt, ensuring it's centered. The Work Sharp tool has a button that, when pressed, allows the belt to turn outwards, which is ideal for larger tools like lawnmower blades. Using the high-speed setting, draw the sharpener along the cutting edge of the lawnmower blade, taking care to follow the existing angle. Sparks will fly as material is removed. Repeat this on both sides of the blade until a new edge is formed. Then, switch to the 6000-grit (honing) abrasive belt and make several light passes along both sides of the edge to polish and refine it. Perform a shave test on your arm to confirm the blade is razor-sharp.

Goal: Clean and secure a lawnmower blade, then sharpen it with a coarse-grit belt and hone it with a fine-grit belt to achieve a razor-sharp edge.

Tools and materials

  • 6000-grit Abrasive Belt
  • 80-grit Abrasive Belt
  • Dull Lawnmower Blade
  • Sanding Sponge
  • Vise
  • Work Sharp Knife & Tool Sharpener Mk.2

What they say

Hide

going to take a sanding sponge and just kind of give the blade a good once over get all the rough stuff off of it so in order to sharpen this to make it razor sharp where we can shave with it doesn't have to be quite as sharp as the knives we're going to go ahead again we're going to flip our little tab down here we're going to change out and we're going to go straight to the coarse belt okay the course belt again is 80 grit so 80 grit and you can buy these belts replacement belts and the belts for your old work sharp tools will fit the new one so we'll center the belt just like so and we're going to remove this guard that we used before for sharpening the knives and it's just as simple as lifting that off okay now this has a little button you push it down and you can make an adjustment right here the belt turns this way and we're going to start working on this nice dull lawnmower blade okay so we're going to the honing belt this is what's going to get it razor sharp it's polishing [Music] that is the sharpest lawnmower blade you've ever seen guys be really careful if you're doing this because if you reach to grab this thing you can hurt yourself you can really cut yourself that thing is ultra ultra sharp okay let's give her the test will she shave that is so sad bye bye a lawnmower blade that you can shave with

Auto-generated from the video audio.