If you’re struggling to balance the blade out, grind the blade a little more on the heavier side – please don’t grind off the surface area of the cutting edge!
Sit back. Revel in you accomplishment and then reattach the blade to the mower.
I am sure that you will find these steps easy for learning how to sharpen mower blades.
A few lesser-known tips for lawnmower blade sharpening:
This sounds kind of obvious, but if you make it a priority to regularly sharpen the blade of your mower, you won’t have to work as hard to get a good edge on the blade.
Keep in mind that power grinders can weaken blades due to the heat they transmit. Make sure you’re quenching the blade (cooling it down in water) throughout the process to prevent overheating.
As for the sharpness you’re trying to achieve, always aim for “butter knife” sharp and not “razor blade” sharp. Grind the edge too sharp and the blade will get dinged by pebbles.
If you don’t have a file or grinder on hand, you CAN use coarse grit sandpaper to just touch up the sharpness of the blade. This will NOT work for big issues like dings, but it cleans up the edge pretty good.
And those are the essential tips you need. Remember – as long as you have a vice, a grinder and a metal file, you’re good to go.
The Best Tools for Sharpening Lawnmower Blades
Okay so while the standard vice, file and grinder will always be a go-to option for me, some of you might want to invest in a specific tool that’s going to take the hassle out of the process.
For that reason alone, I went out and tested some of the tools out there so that I can show you what they do and don’t do.
Here are my thoughts:
Dremel 100-LG Lawn and Garden Rotary Tool Kit
I scored it: 4 out of 5 stars
I actually enjoyed this nifty little tool for its versatility. It will slice anything from metal to light wood and plastic. It also grinds and sharpens furniture and appliances AND comes with a sanding fitment for smoothing edges. Essentially, this is MUCH more than just a mower blade sharpener.
It’s an all-in-one tool
It comes with a garden tool sharpening attachment, a lawn mower sharpening attachment and a chain saw sharpening attachment.
Its lightweight and easy to use
You’re not going to be able to use it for extended periods of time without letting it overheat
It’s not cordless, so you’ll have to be near a power supply when using it
For just a pinch less than the price of the Dremel, you get the Smith’s Mower Blade Sharpener. It’s a great tool for keeping your blades in top condition. I really liked the fact that it was easy to use and the fact that it takes literally minutes to get the job done.
The weighted metal head lends a feel of durability and also makes the process quicker and easier
The rubber hand and finger grips means you get the most comfortable grip while you’re sharpening the blade
The oversize handle is ideal for when you’re wearing gloves
The sharpener isn’t going to work for heavy blades
I’m not fond of the design – plastic covering and no way to prevent the tool from touching the blade equals a recipe for disaster
It’s not going to keep a steady and consistent sharpening angle
The manufacturers say that this funky looking sharpener will tackle anything from mower blades to pruning shears, shovels and scythes and put the edge back on things. I’m not too sure. It’s not suitable for the sharpening of mower blades in my opinion, but I suppose it’s going to do a fine job for shears?
Comes with a full length finger guard
Comes with a reversible diamond honed tungsten carbide blade for sharpening your blades
The materials used for construction are rust and corrosion resistant
This tool didn’t actually work for sharpening lawnmower blades.
Getting the angle right for sharpening blades is almost impossible, and the instructions that come with the tool make things much worse since it’s not very well written