The Best Lawn Mower Blade Sharpener

While using your loan mower, whether electric or gasoline, it is critical to monitor the state of the cutting headset – blades or a blade (depending on the mower you own). Frequently inspect the headset for integrity: chips, deformations, and damages. A slight violation of the integrity will affect the correct operation of your mower as well as the safety.

Additionally, the blade or blades should always be sharp in order to perform their task with ease. And there is no better way to sharpen the headset that you get the best lawn mower blade sharpener for your machine. But there are hundreds of these tools out there, making it almost impossible to choose the best.

Luckily, I have reviewed the top 11 lawn mower blade sharpeners that will do the trick for you.

At a Glance: Our Recommendations for Best Lawn Mower Blade Sharpener:

• Best overall: Magna-Matic MAG-9000 Blade Sharpener
• Best rated lawn mower blade sharpener: Smith’s 50603 Blade Sharpener
• Best commercial lawn mower blade sharpener: Oregon Blade Grinder
• Best lawn mower blade sharpener for drill: Ewalite Blade Sharpener
• Best lawn mower blade sharpening machine: Yellow Hornet Sharpener
• Best lawn mower blade sharpening tool: Work Sharp Knife Sharpener

Review of Top 11 Lawn Mower Blade Sharpeners

Your lawn mower will be in safe hands if you choose one of the following blade sharpeners.

1. Magna-Matic MAG-9000 Professional Lawn Mower Blade Sharpener

MAG-9000 is 100% made and assembled in the United States by professional. The sharpener comes fully assembled to provide you with an easy time when you get home. Hence, you can sharpen your blade as soon as you receive the sharpener and be ready to continue with other things.

It is a commercial-quality blade sharpener that is often used by professional landscapes to sharpen their mowers. And it is able to sharpen conventional lawn mower blades to a consistent 30-degree angle. So, it is an accurate sharpener that won’t sharpen other surfaces of your blade.

Another thing, the tool can easily sharpen both right and left-handed lawn mower blades. This means that you get a versatile blade sharpener that will keep all your blades ready every time. Another feature that makes this tool the ideal sharpener for your blades is the fact that it comes with safety guards.

As you might know, you need the guards to assure a safe sharpening session. Moreover, all the tools you will require are included in the package. You don’t need to look for additional tools in order for the sharpener to start working.

Also, the MAG-900 is quite quiet when you compare it to other tools in its class. It also provides extremely sharp blades and it holds the edge pretty well when sharpening your mower’s blade. It can easily sharpen 4 sets of blades within 15 minutes.

2. Oregon 88-023 Professional 0.5 HP Lawn Mower Blade Grinder

Oregon 88-023 is a great grinder for sharpening different types of lawn mower blades. It provides all the benefits of sharpening the blade due to its powerful and amazing nature. Actually, the tool is able to prolong the life of your lawn mower or even provide it with a second chance of life.

The unit comes with adjustable handles as well as a light that makes it more user-friendly. The light adds safety since you get to see your sharpener even when it is dark or when the weather is foggy. What’s more, you can easily use the tool to sharpen large blades and it runs with a reverse motor.

You might be wondering the important of the reverse motor, and an excited to inform you that it helps you to sharpen both right and left-handed blades. Due to this, you can rest assured that this is one of the best blade sharpers you will find on the market.

Another feature that you should note about the tool is the easy to turn rotary that adjusts knobs and handle to make height adjustment for simple and fast off/on safety switch.  It is also a lightweight grinder that you will find easy to move from one place to the other.

With its features, you can easily say that it is a bargain to buy this tool since it’s very affordable.

3. Work Sharp WSKTS-W Knife and Tool Sharpener

With WSKTS-W, you get the freedom to sharpen every knife you have like a professional easily, quickly, and with consistent results. It is able to provide the sharpest blades that you will ever have in your home.

The tool comes with easy to replace abrasive grit belts. These belts are of high-quality and easily meet all your sharpening needs: fine, medium, and coarse. Moreover, these belts can’t burn or destroy your blade steel when sharpening your lawn mower blade.

Another feature of the sharpener is the precision sharpening that guides the tool to provide easy, fast, consistent, and repeatable results. In fact, it is able to sharpen all your kitchen knives to an angle of 40-degree while your farm blades are sharpened at an angle of 50-degrees.

You can also use the tool to sharpen a wide collection of bladed shop equipment and garden and lawn tools such as shears, scarpers, shovels, and garden pruners. Also, it makes the perfect hand held details grinder to grinding your mower blades and leave them ready for work.

In addition to having a one year warranty, the tool is able to extend the life of your cutting instruments, meaning that you spend less to replace them. You can easily run the grinder on any power outlet that provides 12V.

4. Smith’s 50603 Mower Blade Sharpener

The Smith’s 50603 is a hand held mower blade sharpener that will leave your mower in top condition to provide effective service. Truly, it is the ideal tool for keeping your blades in prime condition and prolong their useful life.

It is an easy and simple to use a machine that uses a preset carbide blade to easily put a sharp and smooth edge on your blade in just a few minutes. The tool also features a long-lasting plastic head that is comfortable to hold. Furthermore, the head is enhanced with a huge finger guard that provides secure and safe sharpening every time you use your sharpener.

Additionally, the sharpener comes with an effective wire-bristled cleaning brush that rests conveniently in the tool’s handle. With all these features, this can be a great product to offer your father during the Father’s Day as a gift. You can also provide it as a gift during any other moment.

Its color is also attractive to the eye and won’t catch dirt easily even if it comes in contact with dust when sharpening your mower’s blade. You will also love its easy to use and the fact that it will take you just seconds to get it assembled and ready to sharpen your machine.

5. Yellow Hornet Lawn Mower Blade Sharpener

This sharpener can sharpen your blades quite professionally at an angle of 30-degree. It is one of the best tools to use at home for sharpening all your mower blades and other farm tools and knives.

With a high rating, many people love this sharpener and it is affordable. So, you don’t need to break a bank to get it. Moreover, the tools guarantee you value for your money since it will come in handy when sharpening your blades.

Another thing, this tool is made in the United States by a team of professionals who have been producing sharpeners for many years. You can rest assured that it will be of high quality and last for long.

Speaking of durability, the sharpener adds life to your blades, making them provide effective service for decades.  And its base measures 9 feet by 12 feet which makes it a stable tool when sharpening your farm tools.

As a buyer, you will also love it since it comes with a video that shows how you should operate the sharpener. This means that you have a zero chance of messing things when sharpening your knives. It is a great product that is safe to use.

6. All American Sharpener 5000

Looking for a sharpener that will sharpen mulching and standard blades? The All American Sharpener 5000 is the tool for you and is one of the most affordable models on the market today.

The tool is able to hold your mower blade securely in order to provide a perfect sharpening session in a matter of seconds. Therefore, you don’t need to worry about the security of your hands when sharpening your tools.

Also, the sharpener is 100% portable and comes with a cordless grinder. This means that you can easily carry your product from one place to the other with ease since it’s flexible.

It is also a lightweight product. Hence, you will have an easy time carrying it to your lawn mower and back to your store. It also comes with M8 by 1.25 adapter pin that attaches the majority of grinders to its assembly.

Hence, even if the sharpener loses its effectiveness, you can easily replace it with a new one without needing to purchase the entire assembly. This will save you money that you would have used to replace the whole assembly.

Another thing, the tool is able to sharpen multiple blades efficiently and easily.  And it will take you just seconds to do this.

7. All American Sharpener Lawn Mower Blade Model 5002

This Mower Sharpener sharpens standard mowers quickly and easily. This sharpener can be bench mounted or clamped to a vice. The incredible design features a vice head to hold the sharpening blade and an articulated arm to hold the grinder.

The arm supports the sharpener and makes sure it sharpens the angle correctly at all times. The All American Sharpener 5002 is equipped with a remarkable M8x1.25 threaded bolt to fit a standard 4 ½ -inch edge sharpener.

The All American Sharpener 5000 eliminates the need to sharpen the blade and results in a smooth, consistent sharpening every time. Blades can be sharpened in a breeze after setting up the tool. Setup is quick and easy. The sharpener can be mounted (screwed or fixed) to almost every surface.

8. Ewalite 4 PCS Universal Multi-Sharp Lawn Mower Blade Sharpener

The Ewalite Lawn Mower vane sharpening stone is exceptionally effective and works correctly for both power and hand drill. The sharpening stone is sturdy and powerful a lot to the extent of sharpening your mower blade to the state of a new one. 

The package contains four pieces of blade sharpener for drill and one pair of high-quality garden genie glove. This Ewalite mower blade sharpening stone is made of corundum, a reliable and durable material that enables you to grind your lawnmower vane regularly. 

Another notable feature of this sharpener is that it is designed to be universally compatible with any type of drill you are using. They are hassle-free to use and relatively inexpensive to procure. The plastic guide is liable to break, but the breakage can be avoided if taken properly.

9. American Lawn Mower Company SK-1 Reel Mower Sharpening Kit

Reel Mower Sharpening Kit from American Lawn Mower Company keeps all your reel blades in top condition to ensure smooth cutting. It is able to reduce the amount of time you require when mowing your lawn by providing sharp cutting tools.

And it is a DIY kit that enables you to sharpen your own mower when at home. This eliminates the need of looking for a professional to do it for you, removing the hassle and the money involved.

The package comes with an application bush, back-lapping crank, and grinding compound. Thus, you will have everything you require to start sharpening your blades and keep them in top condition.

The sharpener is specifically designed for use with American Lawn Mower, Scott’s Reel Mowers, and Great States. With this sharpener, you are assured of reducing cutting time by half, leaving you more time to do other stuff.

Also, the sharpener comes at an affordable price and is made of durable material that ensures it last for long. Use this blade sharpener to sharpen your cutting tools and you won’t regret owning it.

10. All American Sharpener Model 5005 Adjustable Lawn Mower Blade Sharpener

The one thing I like about this sharpener is that you get everything you would need to start sharpening your blades. What that means is you don’t need to waste time looking for other accessories to keep your tools in top condition.

Another feature of this model is the ability to hold your blades securely to ensure that you sharpen them within seconds. And it can easily sharpen high-lift, mulching, and standard blades, making it a versatile product.

I also like the fact that you can use it with a cordless grinder since it is highly compatible with them. There are also adapter pins that you can use to fix it the grinder to the tool’s assembly. 

Besides, this is the model to get if you want to get value for your money. It also lasts for a very long time.

11. Magna-Matic Lot 4 Lawn Mower Blade Service System

You need to sharpen your lawnmower blade regularly to keep it in top shape and that is what you can do with Magna-Matic Lot 4 Lawn Mower Blade Service System. It is an excellent tool for sharpening services and has been shown to provide value for the money.

One thing I must mention of this system is the ability to provide you with professional cuts when you use it to sharpen your blades. It also makes it easier for you to sharpen your gears and is safe.

You can sharpen your tools within 60 seconds, and it easily handles all types of blades, no matter the size. Besides, you don’t need to maintain it, making it a cost-effective model that will last for years.

The system includes MAG-10400, MAG-8000, and MAG-1000. It is a full lawn service system.

How to Choose the Perfect Lawn Mower Blade Sharpener

What is the best lawn mower blade sharpener? The best sharpener should have the following features:

• Sharpening Speed – The speed should be related to the tool you are sharpening. A moderate speed is recommended.
• Quality Material – It should be made of high-quality material. This means that it might be costlier.
• Safety of Use – The model you buy should also be safe when sharpening your lawn mower blade. Be safe from spark and friction.
• Easy to Use – Ensure that the sharpener you get is the ideal one for you. For example, there are left- and right-handed tools. Choose the one that will match your needs.
• Durability – The sharpeners should be durable and even offer your blades more life. Note that these tools will become brunt sooner rather than later after cutting.

The above qualities will ensure that you get a sharpener that will offer you years of service without needing to look for another in the near future.

Lawn Mower Blade Sharpener FAQs

Q: How do I sharpen my lawn mower blade?

A: When sharpening your lawn mower blade or blades, follow these steps:

• Remove the blade from your mower.
• Remove the rust with a bush.
• Choose a firm sharpening surface.
• Use a grinder if the blade is damaged.
• Run your blade at an angle on the grinder.
• Balance the blade.
• Check if it sharp.

Of important, ensure that you use the right sharpening tool to sharpen your mower blades. Some blades should be sharpened by specific sharpeners while some can easily be sharpened by all sharpeners.

Q: Which is the right sharpener for sharpening my mower blade?
A: The right sharpeners should last long and be affordable. It should also be suited for your specific blade.

Q: How long does a blade sharpener last?
A: This will depend on how you take care of it and the frequency of use. Some sharpeners will last longer than others.

Q: Where can I get the right blade sharpener?
A: You can find blade sharpeners in different places, including online store and your local store.

Q: How Often Should I Sharpen My Lawn Mower Blade?

A: It depends on different factors, but most lawn mower blades need to be sharpened every 20 to 24 hours. That means sharpening it once or twice per year.

However, if you are a commercial mower, then you should sharpen these blades once or twice a week. 

Q: How Tight Should Mower Blades Be?

A: You need a torque wrench to tighten the nut or bolt of a lawnmower blade and you should follow the tightening instructions given. Riding mower blades need to be between 70 to 90-foot pounds of torque while walk-behind ones should be between 38 and 50-foot pounds of torque.

Q: Should I sharpen a new mower blade?

A: No, most new blades don’t require grinding. Although it is rare, some blades may have paint on their edge. In this case, it may seem advantageous to grind off the coated paint. With your lawn blades cut properly, you don’t need to stress yourself sharpening the mower blades again.

Q: How to use an angle grinder to sharpen lawn mower blade

• Disconnect the spark plug cord to prevent the lawnmower from turning on when you access the blade.
• Use a wrench to remove the center thread from the blade.
• Put the vane on a bench screw as hard as you can to hold it in place.
• Brush the grass, dirt, and debris off 
• Install the angle grinder with a grinding wheel if you don’t already have it
• Hold the grindstone perpendicular to the thin edge of the blade.
• Set up the angle grinder with the angle of the blade
• Roll the grindstone from side to side along the beveled blade edge

Final Thoughts

The best lawn mower blade sharpener will come in handy when sharpening your lawn mower blades. Ensure that you get a durable product that is affordable. Also, get your tool from a reputable company in order to ensure that you get a high-quality product.