SporGain [Updated] Lawn Mower Blade Sharpener 15°-45° Adjustable Frame with Ball Bearing Manufacture Handle for Right & Left Hand Blades, Use with Angle Grinder, Black

Very happy with this. Well made. Easy to set up and works very well. I always hated sharpening the blades with my grinder. Seemed like it took a long time and the results weren’t that great. Now, it’s easy, quick and puts a good edge on the blades. In the pictures you can see before and after. Took about 45 seconds to do one side. Highly recommend this product.

Came fully assembled (who even does that anymore?) 4 different stems included to fit the Handle threads of most any 4-4.5" angle grinder. I mounted mine on a couple pcs of scrap wood, so I can use this while temporarily attached in a vise. Who wants to tie up bench real estate for a sharpening jig, that only gets used once every 2 or 3 months. Works fine, to keep a consistent angle grind, a little sloppy in the articulated joints, but acceptable. Works freely without any resistance... You can tighten the joint bolts, and lessen the (minor) side to side slop, but then it fights you with a little with resistance during use. I assumed 30 degrees would be the normal angle to set. but my blades were closer to 35. You can't really set it to "just any" degree angle. There are notches within the adjustments. Meaning you can't set it to 32 or 37 degrees (easily). Only just the notched 5 degree increments. just match what you already have on your blades, and keep a wet sponge nearby, to you can keep the blade from getting too HOT. Warm is ok, but getting the blade really hot will take the temper out of the metal, and then the blades wouldn't be as hardened, and lose their edge PDQ. Minimal (less) grinding is way better for you, the blades & your Flap disc too. (I use a 40 Grit) This thing is kind of pricey for what it is, and I wouldn't have bought it if I only had ONE mower, but I have many mowers, and most of them have many blades. A nice jig unit, and I won't miss the dropping off, and remembering to go pay & pick up the blades anymore. I keep my blades sharp, so I can mow faster, with out the re-runs for missed patches, and try not to intentionally run over too many blade edge wrecking objects. Pick up the rocks and sticks, or you will be running the same ones over again next week.

So I've been sharpening my mower blades for years using bench grinders and a nail for balance. I recently heard about these new flapper wheel grinding disc style sharpeners, so I thought maybe I should move into this century, with technology. First I will say it's easy to assembly, functions as it's intended to and with its different anchor shafts, should fit most grinders on the market. I know it fit my new Metabo, that I bought for this task. You don't need a special grinder, just one that hold the flapper / sandpaper grinding discs. I wouldn't use standard grinding discs, as they might shatter and/ or cut too fast. This is about making multiple passes and losing as little metal as possible. In fact it's a lot easier to balance afterwards, versus with the grinder. So why 4 stars? The angle indentation markers it comes with don't seem to make sense. I set them for what the manufacturer of my blades tells me they are and this things angle adjustment seems to be nearly suggestions. I end up setting it and then making a fast pass, to see if it needs to be adjusted. Once set, it fairly straight forward. The arm holds the grinder at that angle and all you do is lift and glide it onto the blade and push straight through and lift at the end- repeat. Like I said, super easy to get balanced. Id say it cut down my sharpening times by half, from using a bench grinder. But here is the second caveat, it doesn't seem to be sharp enough. I recently cut my grass with these newly sharpened high-lift blades and found too many single strands for my liking. Even with my blades nearing the end of last season, previously being sharpened by a bench grinder, they still left my grass flush with maybe one or two stragglers. This years first cut wasn't as good. Maybe I need to practice more and see if it's me, but you can only make so many passes and fear heating the blade and making it brittle. Not good for a yard with a lot of hidden rocks. I'd say if you catch this on sale, already have a grinder and sandpaper flapper disc, then give it a shot. It's a 100% better than those things you attach to your drill and hope it doesn't blow apart with you sitting under a close deck.

I get that this is one of the many American Sharpener knock-offs and after watching numerous youtube videos of people's horror stories I was nervous. I'm happy to report that this one didn't have any of those issues. This thing is awesome! Everything went together easily, it works phenomenally well and it didn't break the bank! Believe me, I really want to support American manufacturing but it's difficult to rationalize spending $220 vs. $50 when both items are equal in quality and functionality. If the American version was $75 I would have bought it. Sorry, but like everyone else, I'm not made of money.

I've always hated my mower because I would have strips of grass that wouldn't cut in the middle of the deck. I had sharpened my blades by hand with an angle grinder and with my bench grinder, and the problem got a little better, but never disappeared. the first time using this, my blades were the sharpest they have ever been and I was able to cut full-width passes with my mower because it cut along the entire 48 inch width. I am thrilled with the purchase. cheaper than always buying new blades. seems very stable and rugged. hooked right up to my cheap harbor freight angle grinder. great product!

Works great holds the blade at correct angle and makes sharpening a quick and easy process .

It works! For years, I have struggled to sharpen lawn mower blades correctly. This fixture works! The clamp holds the blade securely and the fixture rotates to common angles. The fixture is bolted to a 4x4 and then clamped in a large vice. Just a few stokes with a 4 inch grinder and the edges of the blade are restored and just like new!

I purchased this to sharpen the blades on my Honda HRX217HYA lawn mower with the twin blade mulching system. I had always just used a file to sharpen the blades and I am sure that it was not very preceise at all. I have two sets of blades that I alternate. I saw this system and after watching some YouTube videos, I decided to give it a try. I mounted the lower angle piece to a 2x4 and clamped the 2x 4 into my Workmate bench and set the first blade into the unit. I did need to adjust the 4 bolts that clamp the blade onto the sharpener since they were too low for the bigger blade to fit in. After adjusting the 4 bolts so the blade was secure I clamped it in and set the angle adjustment to 35 degrees. I only had to do about 5 passes with my angle grinder and a 60 grit flapper disc before the blade had a nice sharp edge. I put the blade on my balancer and just needed to make one more pass on the heavy side to get it in balance. After I finished the first blade I readjusted the 4 holding bolts for the smaller blade and sharpened it. Like the bigger blade, I needed to adjust the balance. The blades had kind of a slight ragged edge so I just ran a file once over the edge to remove the burrs. Like others have stated, this "Updated" model does not seem to have a ball bearing in the pivoting section where the two beams connect, even though the picture and description shows it has one. This is a disappointment, but I guess "Upated" does not always mean better, just different. This erroneous description is the reason I took off a star. I liked that it came with the 4 lag bolts to secure it to the 2x4. I have a Hercules 4 1/2" angle grinder and one of the provided adapter screws fit the grinder perfectly. For the money it works good, and since I only have one mower and two sets of blades it fills my needs.

Sturdy construction, high quality parts. Delivery was fast.

Très pratique, fais le taf.

I knew there needed to be a better way than freehand with an angle grinder then found the solution on Amazon. Great bit of kit- Well done.

Very good product

This is a lot better than my other one. It is lighter and a better design. And the price is fantastic. Would highly recommend this to family and friends for sure.