Best Reel Mower Blade Sharpeners for Home Use
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A reel mower blade sharpener is a hand tool or small jig that grinds the curved reel blades and the straight bed knife of a push reel mower so the blades cut cleanly instead of tearing grass. The best options for home use are the compact SK-2 style hand sharpeners that attach to the mower and are slid back and forth by hand, plus a few larger bench-style reshapers for more worn blades. The eight sharpeners below are the ones in this product group with a listing that describes the tool itself, with the facts each listing gives.
Quick answer
- For a dull reel mower and an everyday tune-up, choose a compact SK-2 style hand sharpener that lists compatibility with American Lawn Mower, Great States, Earthwise and Scotts reel mowers.
- For badly worn or out-of-shape blades, a larger Multi-Sharp style reshaper is listed to “reshape” blades and to work on most models.
- For a flat bed knife and a curved reel at once, pick a sharpener with two grinding slots, which some listings describe.
- Check the listing for the mower brand and for whether it says it fits rotary mowers. Some SK-2 sharpeners say they do not.
How to choose a reel mower sharpener
Start with the mower. Reel mowers come from several brands, and the sharpener that fits one may not fit another. Most listings in this group say they are built to the SK-2 standard size. Two of them name American Lawn Mower, Great States, Earthwise and Scotts specifically. If your mower is one of those brands, a sharpener that names it is the safer choice. If your mower is an unlisted brand, read the compatibility bullet carefully and check your model’s manual before buying.
Next, decide between a hand sharpener and a larger reshaper. A hand sharpener works while the blades stay on the mower, by sliding the tool along the blade and then along the bed knife. A reshaper is a longer tool that is set to the cutting width of the mower. Its listing says the product size indicates the cutting width, and that you can cut the tool down with a metal saw to fit a smaller mower. That flexibility is useful, but it also means the tool is bulky and needs room to store.
Finally, look at abrasives and replacement parts. One reshaper listing says replacement abrasives are available. A hand sharpener is usually a single unit, so check whether the listing names a replacement or spare part before you buy.
Product by product
Bosmere Multi-Sharp Reel Mower Blade Sharpener, 20-Inch (model R300)
This is the larger of the two Bosmere reshapers. Its listing says it “accurately reshapes reel mower blades” and that the blades come out “shape as new.” It says it works on most models and that replacement abrasives are available. The listing also notes that the product size indicates cutting width, and that the tool can be cut down with a metal saw to the size you need. The 20-inch size suits a wider reel. The listing does not give a weight or a separate compatibility list, so check your cutting width first. Choose this one if your blades have lost their shape and you want a reshaper rather than a light touch-up.
Bosmere Multi-Sharp Reel Mower Blade Sharpener, 16-Inch (model R345)
This is the 16-inch version of the same Bosmere reshaper. The listing repeats the same points: it reshapes reel blades to be “shape as new,” it works on most models, replacement abrasives are available, and the size can be cut down with a metal saw. The 16-inch size fits the many reel mowers with a 16-inch cutting width. If your mower is a 16-inch model, this is the size to check first. The listing does not say which mower brands it was tested with, and this review does not claim it was.
AAAQQ Reel Lawn Mower Blade Sharpener Kit (SK-2 hand sharpener)
This is a compact hand sharpener listed as compatible with many brands of manual push reel mowers. Its bullets describe two ways to use it. On a flat blade, you flip the mower, invert the sharpener and slide it back and forth. On a roller blade, you attach the rotating arm and pull it back and forth along the curve, and the arm follows the blade’s shape. The listing says it is sturdy and durable and gives a light weight of 3.17 ounces. It also says the seller will take a return if the product does not match, and that the seller answers questions within 24 hours. Its listed item dimensions are one by one by one inch, which is unusually small, so check the actual unit before you rely on the size.
Atatod Lawn Mower Blade Sharpener Grinder Tool Kit with Adjustable Bevel
This kit is a sharpening jig rather than a simple hand tool. The listing describes a 30-degree bevel for reel and push mower blades, a durable iron body, and an overhanging base that the listing says helps keep dust off the work and gives four stable corners. It says the body and adjustable ring are detachable for storage. The listing gives a weight of 15.4 pounds and dimensions of 11.8 inches long, 9.6 inches wide and 14 inches high. Its specs show a brand and model but no cutting width, so ask the seller which mower sizes it fits. It suits a home workshop better than a mower shed, because the size and weight make it a bench tool.
Niahm Manual Reel Mower Blade Sharpener, Blue (model SK-2-blue)
This is a plastic hand sharpener described as specially designed for lawn reel mowers. Its listing says it is made of high-quality plastic with hard, sharp blades inside. It says it is easy to use and saves time on reel blade work. The one safety note in the listing is useful: wear gloves when you use it. The listing gives no weight, cutting width or brand compatibility list, so match it to your mower by model before you order. It is a sensible pick for someone who wants a simple, low-cost-of-entry style of tool without a bench jig.
Ulreon Reel Lawn Mower Blade Sharpener Kit (SK-2)
The Ulreon listing says it is compatible with American Lawn Mower, Earthwise, Great States, Scotts and most standard manual push reel mowers. It states that the sharpener is designed to fit the SK-2 standard size and that it does not work with rotary mowers. It describes two grinding slots: one for curved reel blades and one for straight bed knives. The rotating arm follows the blade contour, which the listing says allows sharpening without removing the blades. The listing describes the handle as ergonomic plastic, and it says the tool is light and easy to store. The rotary exclusion is the most important line to read before buying.
Yayapig Reel Mower Sharpening Kit (SK-2)
The Yayapig listing says it is designed to fit American Lawn Mower, Great States, Earthwise and Scotts reel mowers and most standard manual reel mowers. It describes a hand-operated design that needs no power source. The listing says the tool is built to withstand repeated use. It gives no weight, dimensions or abrasive details, so the compatibility line is the main fact to rely on. This is a good match if your mower is one of the four named brands and you want a plain hand tool.
Kwongfoyii SK-1 Reel Mower Sharpening Kit Compound
This product is a different type from the SK-2 hand sharpeners. It is a compound kit, and its listing says the compound method lets homeowners sharpen blades without professional servicing. The listing says it is designed to fit American Lawn Mower, Great States and Earthwise reel mowers. It does not say it is a hand-slide tool, so read the included instructions before you use it. Its listing gives a model number of Sk-1 and does not list a weight or cutting width. Choose it only if you want a compound method and you have confirmed the fit with your mower’s make.
Which one to pick for common situations
If your reel blades are only slightly dull and you want a quick tune-up between seasons, a compact SK-2 hand sharpener is the usual choice. The Ulreon, Yayapig and Niahm listings all name the SK-2 size, and the Ulreon listing adds the most detail on the two grinding slots. If your mower is an American Lawn Mower, Great States, Earthwise or Scotts model, check that the listing names your brand.
If the blades have lost their shape, or you are restoring an old mower, a Multi-Sharp reshaper is the better pick. The two Bosmere listings describe reshaping rather than light touch-up. Choose the 16-inch R345 for a 16-inch mower and the 20-inch R300 for a wider deck.
If you want a jig that sits on a bench, the Atatod kit is the one in this group that describes a fixed bevel angle and a stable base. Its listing gives no cutting width, so match the mower size yourself.
Safety and setup
Reel blades are sharp, and the mower should be safe before you start. Turn the mower over or lock the reel so it cannot turn, wear gloves, and keep fingers clear of the cutting edge. The Niahm listing names gloves as a safety step, and that advice applies to every product here. Clean grass and debris off the reel first so the sharpener grinds the blade, not the dirt.
Work slowly. A hand sharpener removes metal, and too many passes can leave the blades thin or uneven. Stop when the edge looks even and bright along the length of the blade. A reshaper needs more care, because it can change the blade shape if you rush. If a blade looks bent or chipped, the sharpener will not fix it, and you should replace the part instead. For a step-by-step method, see How to Sharpen a Mower Blade Safely.
Mistakes to avoid
- Buying without checking the mower brand. Several listings name American Lawn Mower, Great States, Earthwise and Scotts specifically.
- Using an SK-2 style tool on a rotary mower. The Ulreon listing says it does not work with rotary models.
- Choosing a 16-inch reshaper for a 20-inch deck. Check the cutting width first.
- Skipping gloves. The Niahm listing gives this safety step.
- Assuming a sharpener fixes bent blades. A bent or chipped blade needs replacement.
Comparison at a glance
| Product | Type | Listing facts |
|---|---|---|
| Bosmere R300, 20-inch | Reshaper | Reshapes blades, works on most models, replacement abrasives |
| Bosmere R345, 16-inch | Reshaper | Reshapes blades, works on most models, replacement abrasives |
| AAAQQ SK-2 kit | Hand sharpener | Many brands, 3.17 oz |
| Atatod kit | Bench jig | 30-degree bevel, 15.4 lb, iron body |
| Niahm SK-2 blue | Hand sharpener | Plastic, specific to reel mowers |
| Ulreon SK-2 kit | Hand sharpener | Two grinding slots, not for rotary mowers |
| Yayapig SK-2 kit | Hand sharpener | Fits American Lawn Mower, Great States, Earthwise, Scotts |
| Kwongfoyii SK-1 | Compound kit | Compound method, fits American Lawn Mower, Great States, Earthwise |
View on Amazon (Bosmere 20-inch)
View on Amazon (Bosmere 16-inch)
View on Amazon (AAAQQ SK-2 kit)
View on Amazon (Atatod kit)
View on Amazon (Niahm SK-2 blue)
View on Amazon (Ulreon SK-2 kit)
View on Amazon (Yayapig SK-2 kit)
View on Amazon (Kwongfoyii SK-1 kit)
FAQ
What is the difference between a hand sharpener and a reshaper?
A hand sharpener is a small tool you slide along the blade while the blade stays on the mower. A reshaper is a longer tool set to the cutting width, and its listing says it reshapes blades to “shape as new.” Use a hand sharpener for routine upkeep and a reshaper when the blade shape has changed.
Will an SK-2 sharpener fit my mower?
Several listings say they are designed to the SK-2 standard size and name American Lawn Mower, Great States, Earthwise and Scotts reel mowers. Check your mower brand and model against the listing. The Ulreon listing says it does not work with rotary mowers.
Which reshaper size should I buy?
The Bosmere listings come in 16-inch and 20-inch versions, and the listing says the size indicates cutting width. Match the size to your mower’s cutting width. The listing says you can cut the tool down with a metal saw if you need a smaller size.
Do I need to remove the blades to sharpen them?
The Ulreon listing says the rotating arm follows the blade contour, so you can sharpen the reel and bed knife without removing the blades. Still, check the mower manual before you start, and follow its safety steps.
Is a compound kit better than a hand sharpener?
It is a different method. The Kwongfoyii SK-1 listing describes a compound method that lets homeowners sharpen blades without professional service, and it names American Lawn Mower, Great States and Earthwise. Read the included instructions. A hand sharpener is simpler, but the compound kit may suit a mower you want to keep in good shape for years.
Do I need gloves?
Yes. The Niahm listing says to wear gloves when you use the sharpener, and the blades are sharp enough that gloves are a sensible precaution with any tool in this group.
Bottom line
For a quick upkeep on an SK-2 compatible reel mower, choose a hand sharpener whose listing names your mower brand. For blades that have lost their shape, choose the Bosmere reshaper that matches your cutting width. For a bench jig with a fixed bevel, the Atatod kit is the one in this group that describes a stable base and a 30-degree angle. Confirm the fit before you buy, because the brand and rotary rules matter more than the label on the box.
For related reading, see Best Blade Style for Lawn Mowers: Rotary, Mulching, Reel or Flail and How to Check a Mower Blade for Balance.
