【NEW】Double Layer Corundum Lawn Mower Blade Sharpener, Universal Wear Lawnmower Blade Sharpener for Any Power Drill/Hand Drill, Double-Layer Grindstones Easy to Use and Not Easy Damage-(Gray)

Sharpened as expected. It takes some angling and patience, but you can get a sharp blade. I have used a file for years and as with everything new it will take a few sharpening sessions to get it down pat.

This corundum blade sharpener does what it claims – it CAN sharpen lawn mower blades, and it’s easy to use with any standard power drill you likely already have at home. As an added bonus, I was even able to use it to touch up some of my kitchen knives, which was a nice surprise.That said, there are a couple of drawbacks worth noting. The sharpening stones tend to wobble when spinning at high speed. I suspect that’s why so many reviewers mention theirs breaking on first use – the instability puts stress on the stone. Because of that wobble, I couldn’t insert the mower blade between the two grinding surfaces as intended. Instead, I had to hold the blade perpendicular to the stone and sharpen one edge at a time. Not ideal, but it still worked.Fortunately, the set comes with three sharpeners, so if one breaks (which is a real possibility), you’ll have backups ready to go.Overall, it's a functional tool for the price – just be careful during use and manage your expectations. For occasional sharpening jobs, this set does the trick.

Worked great on mower blades! I would buy again.

not much differance than using an off the shelf grind pad

Not for first time users.I am not happy with this product.The directions and videos fail at teaching people new to this process.I am not saying the product is bad, I am saying it should say use by more experience users.I recommend removing the blade from the mower, the videos all show the process being completed while on the mower.

I have a greenworks 25 inch mower. It is dual blades. A set of blades is about $30 on Amazon. I got this sharpener and removed the blades and sharpened them. It does a good job. I had an extra set of blades that I had previously used (greenworks was giving out replacement blades with the lawnmower purchase) and I sharpened those and I am all set. To sharpen a total of 4 blades, I only had to use one of the dual wheel sharpening devices. The unit is still in tact and I see no reason why I can not keep using it. Since they give you a total of three sets of wheels, I should be all set for a couple of years. This will literally save me several hundred dollars in replacement blades. I am happy with the way this worked out.

One wheel cracked on the first use on my lawnmower blade.

I was honestly shocked at how easy to use and effective this sharpening pack was. I used it before mowing my lawn tonight. Tilted the 42" zero turn back, using a 4x4 about 3' tall to hold it up at the deck, and sharpened the blades without taking them off. They were as dull as the handle end of a butter knife before and after about 30 seconds on each end of the two blades (4 in total) they were as sharp as a bitcher knife. The dual edge (groove) of this product helped significantly with keeping the grinder on the blade. I used my Ryobi brushless to run the tool and imagine any driver with medium to high power would be effective. I wasn't expecting much based on some of the poor reviews but I was pleasantly surprised. It was a 5 minute job and the blade mulched like it was new again.