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7 Best Lawn Mower Blade Sharpeners Reviews & Buying Guide in 2024

“Enhance Your Lawn Maintenance with Our Expert-Recommended Mower Blade Sharpeners”

Maintaining a well-groomed lawn involves more than just regular mowing; it requires keeping mower blades sharp for clean cuts and a healthy lawn. Usually, the blade gets blunt and results in uneven grass cutting due to frequent usage of a lawn mower. Investing in a quality lawn mower blade sharpener is crucial to enhance mower longevity for efficient repeated usage, especially if you deal with thick or woody vegetation.

To help you navigate the myriad options available, we’ve outlined key factors to consider:

  • Power Type: Choose between manual and electric options. Manuals are cost-effective but time-consuming, while electric models offer faster results at a higher price point.
  • Speed: Consider the sharpening speed of the grinder. Manuals typically take 30 minutes to a few hours, whereas electric models are quicker due to their RPM and horsepower.
  • Sharpener Material: Two main materials, carbide and corundum, are used. Carbide, found in handheld sharpeners, is carbon-heavy, while corundum, used in drill-type sharpeners, is aluminum oxide.

Our article provides comprehensive reviews of the Top Lawn Mower Blade Sharpeners and an informative “Buying Guide” to help you make an informed decision. With the right sharpener, maintaining sharp and efficient mower blades becomes hassle-free, ensuring pristine lawn care results every time.

Roundup of the Top 10 Picks!

Our Top Recommendations for Quick Selection:

Best Lawn Mower Blade Sharpeners 

Lawn Mower Blade SharpenersPower TypeBuy Now
Work Sharp Knife Tool SharpenerElectric – Drill GrinderCheck On Amazon
Smith's Mower Blade SharpenerManual – HandheldCheck On Amazon
All American Lawn Mower Blade SharpenerElectric – Angle GrinderCheck On Amazon
Ankda Corundum Mower Blade SharpenersElectric – Drill GrinderCheck On Amazon
Sharp Pebble Orange Ninja Sharpener ToolManual – HandheldCheck On Amazon
AccuSharp Lawn Mower Blade SharpenerManual – HandheldCheck On Amazon
LAVIZO Lawn Mower Blade SharpenerElectric – Drill GrinderCheck On Amazon

Top 7 Lawn Mower Blade Sharpeners

Whether you are a weekend warrior, a seasoned gardener, or simply own a pair of pruners, here’s a list of top-selling lawn mower blade sharpeners that sharpen a variety of outdoor tools, making your outdoor/gardening work a breeze.

1. Work Sharp Knife and Tool Sharpener


Work Sharp Knife & Tool Sharpener

Work Sharp, a renowned manufacturer of sharpening tools and equipment, offers the MK2 Electric Knife and Tool Sharpener, ideal for effortlessly achieving razor-sharp edges on lawnmower blades with ease and precision. Featuring a dual-speed motor, it provides low speed for delicate blades and high speed for tougher sharpening tasks, ensuring versatility and control. Engineered for exceptional performance and convenience, this adjustable sharpening system simplifies lawnmower blade maintenance, ensuring consistent and efficient cutting results.

Best Features:

  • User-friendly design with intuitive controls, straightforward setup, and easy maintenance.
  •  Its adjustable sharpening guides ensure a perfect edge, irrespective of the size and shape of lawnmower blades.
  • Offers flexible abrasive grit options for customized sharpening and finish.
  • The powerful motor ensures swift and efficient sharpening.
  • Precision angle adjustment for optimal cutting performance and longevity.
  • Durable construction to withstand regular use and ensure long-lasting reliability.
  • Easy to replace abrasive belts and sharpen any knives, blades, or tools.
  • Backed with a 1-year long warranty

What’s in the Box:

  • Work Sharp MK2 Professional Electric Lawnmower Blade Sharpener
  • Assorted abrasive belts (coarse, medium, fine – 2 pieces each)
  • User manual
  • Warranty card


  • Being an electric sharpener, it requires access to a power outlet for operation.
  • Some users may find the appearance to be less appealing.
  • Requires adjustment to achieve the desired sharpening angle.

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2. Smith’s 50603 Mower Blade SharpenerSmith Mower Blade Sharpener

If you seek a cost-effective handheld blade sharpener, the Smith’s 50603 Blade Sharpener is an ideal pick. It’s a versatile tool manufactured to simplify the lawnmower blade maintenance routine. Prioritizing convenience and durability, this sharpener consists of a wire cleaning brush in its handle and a preset coarse grit carbide blade offering a straightforward solution to maintain sharp blades, enhancing your gardening endeavors.

Best Features:

  • Made from high-quality plastic material that withstands daily usage rigors.
  • Ergonomic design with an oversized handle and large safety guard for comfortable and safe handling.
  • Easy-to-use intuitive design simplifies the sharpening process for users of all skill levels.
  • A preset carbide blade ensures efficient and effective sharpening with minimal effort.
  • Includes a wire cleaning brush to help maintain blade cleanliness and longevity for efficient cutting.
  • It minimizes the hassle and keeps the blades sharp to make the lawn great
  • Being compact with dimensions of 7X2.75 inches, this tool is convenient to use and easy to store.

What’s in the Box:

  • Smith’s 50603 Handheld Lawn Mower Blade Sharpener
  • Wire cleaning brush
  • User manual 


  • May lack additional accessories such as replacement blades or alternative grit options.
  • Some users reported that plastic construction might not last long.
  • Requires manual operation, which may require more effort for larger lawnmower blades or extensive sharpening sessions.

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3. All American Sharpeners Model 5005

All American Lawn Mower Blade Sharpener

All American Sharpener is a relatively small brand, but its products’ performance and quality are right there at the top along with other prominent brands. Their Model 5005 Gen 2 Sharpener offers a versatile solution to maintain the sharpness of the lawnmower blades. This innovative cordless sharpener caters to various blade types (both right and left-hand blades) with adjustable angles from 15 to 45 degrees. It perfectly sharpens standard straight, mulching, and high-lift blades, offering portability and flexibility. 

Best Features:

  • Easily adjustable angles from 15 to 45 degrees (5-degree increments) cater to various blade types.
  • The vice head securely holds the mower blade during sharpening for precise results.
  • The cordless and portable design allows for convenient use anywhere.
  • Ensures quick and easy setup and a consistent grind.
  • Its pivot head design allows for easy sharpening of mulching blades (both sections)
  • Multi-blade compatibility caters to a variety of mower types.
  • Included 4 adapter pins offer versatility, compatibility, and usability with most angle grinders.
  • Backed by a lifetime warranty for long-term assurance and support.

What’s in the Box:

  • All American Sharpener Model 5005 Gen 2
  • 4 Adapter pins for grinder attachment
  • User manual
  • Warranty card


  • It is a bit expensive product compared to others on the market
  • Might require an angle grinder for perfect sharpening.

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4. Ankda Corundum Lawn Mower Blade Sharpener

Ankda Lawn Mower Blade SharpenerAnkda specializes in outdoor garden tools, and their Corundum Lawn Mower Blade Sharpener reflects their dedication to quality. Crafted from double-layer corundum, this sharpener ensures lasting sharpness and efficiency, offering durability for repeated use. Its multi-scenario application allows for sharpening various blade types, catering to a range of gardening needs. Simple to use, just attach the sharpener to any power drill for quick and easy blade sharpening. The double-layer grinding wheel ensures effective sharpening (especially the edges) and prolonged use, making it a reliable choice for multiple materials.

Best Features:

  • A versatile option that works with any power or hand drill for easy sharpening.
  • High-quality construction from durable double-layer corundum and enhances longevity.
  • Simple attachment to power drills ensures easy and safe operation.
  • Enhances cutting performance, boosting overall productivity in lawn care tasks.
  • Multi-scenario application to sharpen any blades, knives, or tools
  • The Polygon handle design ensures stability without falling off
  • Backed with a 1-year warranty
  • Compact and lighter design with dimensions of 58X63 mm (or) 2.3X2.5 inches

What’s in the Box:

  • 3 x Lawn Mower Blade Sharpener
  • User manual


  • The grinding or sharpening stones are flimsy and wear down quickly
  • Some users mentioned that it is not suitable to provide sharp edges for heavy-duty tasks.

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5. Orange Ninja All-in-1 Tool Sharpener

Sharp Pebble Orange Ninja SharpenerNext up, we present an all-in-one tool sharpener by Sharp Pebble. The Orange Ninja Multi-Sharpener is meticulously designed to maintain razor-sharp edges on a wide range of tools, including knives, hunting gear, and garden tools. Its advanced sharpening system ensures optimal performance for each tool, whether indoors or outdoors. With specialized functions tailored for gardening hand tools, it ensures cleaner, smoother cuts. The Orange Ninja is a must-have addition to any toolkit.

Best Features:

  • Versatile sharpener suitable for various tools and applications (knives, garden tools, and hunting gear).
  • Specialized functions for lawn mower blades, shears & scissors, ensuring cleaner cuts.
  • Ideal companion for camping, hunting, and survival scenarios.
  • Portable and user-friendly design enables on-the-go sharpening.
  • Durable construction with tungsten sharpener elements ensures longevity.
  • Ergonomic handle and rotating switch for easy slot selection.
  • Innovative 360-degree press, rotate & lock mechanism enhances usability.
  • Fits seamlessly into EDC kits, crafted with robust tungsten for extended durability.

What’s in the Box:

  • 1 x Sharp Pebble Orange Ninja All-in-1 Garden Tool & Knife Sharpener
  • User manual


  • Plastic construction may lack durability compared to metal alternatives.
  • Limited versatility due to coarse and fine grit types.

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6. AccuSharp Garden Tool Sharpener

AccuSharp Garden Tool Lawn Mower Blade Sharpener

The AccuSharp Garden Tool Sharpener is your ultimate solution for revitalizing challenging-to-sharpen tools in your tool shed, such as lawnmower blades, pruning shears, limb loppers, hoes, shovels, and scythes. Engineered with a reversible diamond-honed tungsten carbide blade, this sharpener swiftly restores, sharpens, and hones blades with efficiency, promising years of dependable performance. Its innovative design allows it to sharpen mower blades within 10 to 15 seconds. Featuring an ergonomic handle, it caters to both left and right-handed users, while a full-length guard ensures safety by shielding fingers during the sharpening process.

Best Features:

  • Versatile sharpener for all single-edged items in your tool shed.
  • Made from diamond-honed tungsten carbide for durability and longevity.
  • Sharpens lawnmower blades in just ten seconds for quick results.
  • The reversible design allows the usage of both sides of the sharpener.
  • Long-lasting construction ensures five to ten years of use between blade replacements.
  • Ergonomic handle accommodates both right and left-handed users.
  • A full-length guard provides finger protection during the sharpening process.

What’s in the Box:

  • 1 x AccuSharp Garden Tool Sharpener
  • User manual
  • Warranty card


  • Size discrepancies might affect its suitability for certain tools.
  • The build quality of the sharpener is not up to the mark (thin plastic body and flimsy handles).

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LAVIZO Universal Lawn Mower Blade SharpenerLAVIZO is another smaller brand of power tools that makes products for garden tools, including lawnmowers. It even makes a grinding kit that can be used to sharpen the blades of your lawn mower. This Universal Lawn Mower Blade Sharpener is made of high-quality double-layer corundum that ensures longevity and durability, promising to keep your blades sharp for the long haul. With its wide application, it’s suitable for sharpening various tools, making it a versatile addition to your toolkit. It is quite easy to install on the electric drill (fit for most power drills) which makes blunt old blades sharper quickly and effortlessly. 

Best Features:

  • Three grinding wheels are included for efficient blade sharpening.
  • An affordable price tag offers great value for money.
  • Easy installation and application, requiring only 10 seconds to set up.
  • Sharpens lawn mower blades within 10 minutes, saving time and effort.
  • Harder material construction that won’t wear easily and is used for a longer time
  • Its polygonal design offers more stability and won’t fall off easily
  • This upgraded version uses a double-layer sanding structure for effective sharpening.

What’s in the Box:

  • 3 x Lawn Mower Blade Sharpener
  •  User manual


  • Even though the material is good, the product isn’t well-made and it might break easily.
  • While the sharpener offers efficient sharpening, some users may prefer alternative methods for blade maintenance.

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Buying Guide to Purchase the Lawn Mower Blade Sharpeners

When it comes to maintaining a pristine lawn, having sharp mower blades is paramount. A well-sharpened blade ensures a clean & smooth cut, promoting the health of your grass. This guide will help you select the right lawnmower blade sharpener for your cutting requirements and preferences.

Here is the list of the essential key factors that have to be considered while shopping for sharpeners to sharpen your lawn mower blades:

1. Types

Understanding the appropriate sharpener for your lawnmower blades is essential, as each type offers a unique method for achieving a precise cut. Here are the different types of sharpeners available:

a. Handheld Sharpeners

Ideal for smaller grassy spaces, handheld sharpeners offer versatility and eco-friendliness. While they can sharpen household knives and other tools, they require manual effort and time, with approximately 30 pulls per side of the blade. Consequently, they’re not as efficient as powered alternatives.

b. Drill Attachments

Utilizing a ¼-inch hex connection for compatibility with various drills, these attachments feature beveled corundum construction and a guide for precise positioning. While the setup may take some time, the sharpening process is relatively quick. However, inexperienced users may find it challenging to maintain balance, making it better suited for experienced individuals and medium-sized yards.

c. Angle Grinders 

Regarded as the premium option, angle grinders are preferred by landscaping professionals for their power and versatility. They can be operated via electric cords or rechargeable batteries and feature rotating discs that connect to the blade edge at an angle. Multiple handle designs offer a balance of control and speed, making them ideal for commercial settings or large yards. Their disc design minimizes the risk of damaging the mower blade, and dedicated discs allow the sharpening of various tools beyond lawnmower blades.

2. Blade Compatibility

Ensure the sharpener is compatible with your mower blade size, type, and angle. Models vary in compatibility, so verify that the sharpener can accommodate your specific blade type to avoid issues during sharpening.

If using the power drill-attachment sharpener type, where you have to fit the sharpener to the drill to produce the required force. For this, check whether the drill is compatible with these attachments or not. Also, check the blade size (5 or 6 inches) and sharpener angle (30° or 40° grinders) while sharpening the blade. If it is not compatible, then it might result in improper blade sharpening and cause cutting issues.

3. Sharpening Mechanism

Assess the speed of the sharpener to know the time it requires to sharpen the blades. Look for a sharpener with a reliable sharpening mechanism that includes manual (handheld) or electric (grinders). While electric grinders are convenient with faster sharpening times but may be less precise, manual sharpeners can provide precise control yet require more effort. Opt for a sharpening mechanism with a speed that balances efficiency with precision to avoid overheating and potential damage to the blade.

4. Power Type

Choose between manual and electric sharpeners based on your preference for convenience versus manual effort. Electric models are quicker but may come at a higher cost, while manual sharpeners are affordable yet require more time and labor to sharpen the blade.

Also, check the motor power for those who are using electric models for spinning the grinding wheel. High motor power (at least 1/4 HP or 1/2 HP) will use the blade sharpener even for heavy-duty applications within a short time.

5. Sharpening Angle

Consider the sharpening angle provided by the sharpener. Most lawn mower blades have a specific angle at which they should be sharpened for optimal performance. Make sure the sharpener you choose can match this angle.

6. Durability and Build Quality

Opt for a sharpener made from durable materials such as hardened steel or aluminum. A sturdy build ensures longevity and stability during the sharpening process.

  • Guide Material: Check the durability of the guide material (used to control the angle of sharpening), typically constructed from plastic. Ensure it can withstand prolonged use without overheating or melting. Look for reviews to confirm durability and performance under various conditions.
  • Sharpening Material: The sharpening material refers to the grit grinding away the blade’s metal, and this material varies based on the sharpener type. So, consider the sharpener material, such as corundum or carbide. These materials should be harder than the blade metal for effective sharpening. Corundum is common in drill-type sharpeners, while carbide is often found in handheld models.

7. Ease of Use

Select a sharpener that offers ease of use, particularly if you lack experience in blade sharpening. Emphasize ergonomic design, adjustable guides, and user-friendly controls to streamline the sharpening process and enhance comfort. Seek out features tailored for ease of use, such as compatibility with left-handed users, ergonomic handle designs, and the appropriate sharpener type. Additionally, check the user reviews that provide insights into the user experience.

8. Safety

Safety should always be a priority when sharpening mower blades to prevent friction, cuts, or sparks.

  • Handheld sharpeners typically feature finger guards to protect against cuts or bruises, often accommodating gloves for added safety.
  • When using motor grinders, invest in separate eye protection or goggles to shield against sparks and metal filings.
  • Consider wearing safety gloves and a protective apron or non-flammable clothing, and also blade guards, or an automatic shut-off mechanism for enhanced safety during operation.

9. Versatility

Consider whether you need a sharpener that can also handle other tools or blades besides lawn mower blades. Some sharpeners offer versatility, allowing you to sharpen knives, scissors, and other garden tools. This makes an excellent option for gardeners who use varied blades that effectively sharpen all these blades. Avoid models that may damage certain blade types and opt for ones suitable for your specific sharpening needs.

10. Portability

If you need to sharpen blades away from your workshop or garage, consider the sharpener’s portability. Look for compact and lightweight options that are easy to transport and use on the go.

11. Warranty

Review the warranty and return policy before purchasing to ensure coverage against manufacturing defects. Look for models with warranties of at least 1 to 2 years for added peace of mind. Also, read customer reviews and seek recommendations from fellow lawn care enthusiasts or professionals. Real-world experiences can provide valuable insights into the performance and reliability of different blade sharpeners.

Verdict: By considering all these features, you can easily select a sharpener that keeps your mower blades in optimal condition for a beautifully manicured lawn.

How to use the Lawn Mower Blade Sharpener?

Initially, sharpening your mower blades might threaten you, yet the use of the right tools will make the sharpening process quite simple and easy. Here is the detailed step-by-step procedure that explains how to use this sharpen to sharpen tools like mower blades:

1. Setting Up 

  • Prepare a clean workspace and gather necessary tools and supplies.
  • Wear safety gear like gloves, safety goggles, and hearing protection.
  • Use adjustable wrenches to remove the blades.

2. Remove the Blades

  • Turn off the mower and disconnect it from the power source.
  • Drain the gas tank and place the mower on its side with the carburetor facing upwards.
  • Loosen the nut connecting the blade and remove it, then clean the blade.

3. Clean the Blades

  • Use a dry cloth to clean the blade surface and apply lubricant if needed.
  • Leave it for some time to get dry and clean.

4. Blade Setup and Sharpening Tools 

  • Clamp the blade securely and ensure the cutting edge faces upwards.
  • Choose the appropriate sharpening tool: hand sharpener, drill-powered tool, or angle grinder.

a. Hand Sharpener: Place the sharpener on the blade’s cutting edge and move it in one direction with the grain. Apply proper pressure to avoid damaging the blade and sharpener. It might need less than 50 file strokes to sharpen the blade

b. Drill-Powered Tool: Use gloves and eye protection and clamp the blade securely. Attach the drill attachment (1/4ʺ shank with guide piece) and ensure proper alignment for precise sharpening. Use low to medium pressure and make no more than 2 passes per side.

c. Angle Grinder: Clamp the blade securely and set up the angle grinder with a flap disc. Ensure proper alignment and move the grinder back and forth with minimal pressure. Also, it smoothens the rough patches of blade edges.

5. Blades Balancing 

If the sharpener and blade aren’t balanced properly, it results in uneven sharpening, causing extra vibrations and damage to the mower. So, check and balance the blade to ensure even sharpening.

6. Re-Install the Blades 

  • Clean the mower area and reinstall the blades securely using the available tools.
  • Refill the tank for a fuel-powered unit and reconnect the parts for an electric model
  • Test the mower to ensure proper functioning.

7. Mow 

  • Test the mower on a patch to ensure even and smooth cutting.
  • Sharpen the blade at least twice yearly for optimal performance and maintenance.

Lawn Mower Blade Sharpeners – FAQs

1. When should I sharpen or replace my lawnmower blade?

Ans: If you notice the grass tips becoming shabby and brown, it’s time to sharpen the blades. Most manuals recommend sharpening every 25 hours of use or annually before the cutting season. Replace the blade if it’s cracked, bent, or worn.

2. Do I need to remove the blade from the mower to sharpen it?

Ans: Most mowers allow blade removal for sharpening, although some models can be sharpened in place. Removing the blade facilitates a thorough inspection for damage and sharpness.

3. How sharp should my lawnmower blade be?

Ans: Blades should be aggressively sharp but not razor-sharp to prevent rolling, nicking, and chipping. Overly sharp blades dull faster, necessitating more frequent sharpening and reducing blade lifespan.

4. What is the cost of sharpening a lawnmower blade?

Ans: DIY sharpening costs around $20 for a sharpener and your time. Professional sharpening typically costs around $100. Costs vary by location and blade type.

5. How often should I sharpen my lawnmower blade?

Ans: Generally, sharpen blades every 20-24 hours of use. Factors like climate, mowing frequency, and grass wetness affect frequency. Dull blades result in uneven cuts or bent grass.

6. How do I know when to sharpen my lawnmower blade?

Ans: Uneven or crushed grass after mowing indicates dull blades. Sharpen blades immediately for proper performance.

7. What angle should I sharpen my lawnmower blade?

Ans: Sharpen the cutting edge at a 45° angle using a grindstone or file. Use a bench grinder with a back-and-forth motion for best results.

8. Do new lawnmower blades need sharpening?

Ans: No, new blades don’t require sharpening. Remove any paint coatings by mowing a small area before use.

9. Should I sharpen both sides of the blade?

Ans: Sharpen the cutting edge of the blade. Some models have single-sided blades or pointed edges. Refer to specifications or sharpen the cutting side if unsure.

10. What tools should I use to sharpen lawnmower blades?

Ans: Use power tools like angle grinders or hand tools like hand files. Power tools offer quicker results, while hand files are versatile but require more effort.


Selecting the best lawn mower blade sharpener can significantly improve the efficiency and effectiveness of your lawn care routine. Our article has provided insights into some of the top options available, and a buying guide covering their features and benefits to help you make an informed decision. We hope this article helps you a lot in selecting the ideal quality lawn mower blade sharpener (whether you seek one solely for mower blades or a versatile tool capable of sharpening other implements) that suits your cutting requirements and preferences.

If you have any questions or concerns regarding its selection or usage, feel free to share them in the comments section below. We’re here to assist you in optimizing your lawn maintenance efforts.

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