Best Chainsaw Sharpener: Chainsaw is a very powerful tool for cutting material quickly and easily. On the other hand, over time, the blade becomes dull making the chainsaw lose its effectiveness. Instead of buying an expensive chain blade, one of the cheapest and most cost-effective ways is to simply buy a chainsaw sharpener tool.
You can have a good experience with the Chainsaw when you properly maintain it. Life and the service of the chainsaw will be high when we do a proper check once a while. Like any other tool, chainsaws also wears out and need to be properly maintained in order to remain in good working conditions. When we work with a blunt chainsaw, you should be putting a lot of effort and takes a lot of time. Even though you put efforts, there may be a case where you cannot get your work done. Otherwise; a sharp chainsaw will work efficiently.
It would be an irritating task for a chainsaw operator when the saw is poorly sharpened or blunt. One can easily become tired and fail to aim the target, results in not achieving the purpose of the chainsaw. Also, there is a risk of damage and failures to occur around the environment, one of the main risks is Chainsaw Kickback, which is the main cause of chainsaw accidents.
A depth gauge which determines and controls the depth of the cut and the cutters, which are to serve the purpose of cutting, are the parts of the chainsaw. In order to be effective, there comes the need to sharpen the saw when they wear out and become dull or blunt.
When You Should Sharp Your Chain?
The height of the rakers or the depth gauges needs to be slightly less than the height of the cutters, for a chainsaw to work efficiently. If there is not much difference and is small, the cutters slide easily over the wood without actually cutting and if it is too high, the saw will become very unstable. This is a risky situation and is dangerous to the chainsaw operator.
So how do you know if your chainsaw needs to be re-sharpened? Some of the signs that tell you when you should be sharpening the chainsaw saw, when it has become dull and is due for re-sharpening.
- Fine saw dust
Normally a sharp chainsaw produces wood chips when cutting the wood. If the chainsaw is producing a fine saw dust, it is due to the dull and blunt saw. It is saying us to re-sharpen the saw.
- Irregular Cuts and Chains that Vibrate and Jump Erratically
The rakers and the cutters will not work properly when the chainsaw is blunt. Saw will jump erratically because the saw chain slides and bounce over the wood instead of cutting through. Also, saw makes irregular cuts. You need to re-sharpen and stop using a chainsaw when it behaves this way and avoid any case of an accident.
- You are Using A Lot of Energy to Cut
If you had to apply a lot of force in cutting the wood, then it is a sign of the saw needs to be sharpened. A well sharpened saw cuts through the wood easily.
How to Sharpen a Chainsaw
If you are not the one, who is familiar and have been using the chainsaw for a long time, sharpening the saw can be very frustrating. If you want to save energy, time and ultimately, sharpening the chain is a very big part of using it. We have come up with the best practices on how to sharpen a chainsaw and hope it will keep you cutting and trimming faster and easier than ever before.
Make sure you have access to these important tools for your chainsaw, whether you are cutting fire wood or just trimming branches in the yard.
- Saw wrench
- Sturdy work area
- Chainsaw file
Though they are just as important as the saw itself and cannot be overlooked, these provisions are relatively cheap. You can opt for electrical saw sharpeners or special products that make sharpening your saw in a convenient way. But for the basic task of sharpening a saw, you will usually need these three standard ingredients as minimum requirements.
A chainsaw file is a round file that fits in the teeth of the saw chain. There are a variety of sizes of files available. Make sure you have the correct gauge file for your chain. If you are not sure which one to buy or use, you can check the model number of your saw on the manufacturer’s documentation or website or the reference book where you buy your file.
This may seem complicated, but it is probably the most difficult part of sharpening your saw. Please make sure you confirm that you are using the right size file for your chain otherwise all your work will be of no use.
Pro Tip: Files should sit in the chain snugly, but a quarter of its diameter should rise above the chain.
The chainsaw wrench is a combination of two size wrenches and a flat head screwdriver. If you have one of these wrenches that fit your saw it can save time when sharpening.
Of course, you can opt for just a good fitting wrench or socket and a separate screwdriver if you are missing one.
Pro Tip: Some chainsaws now have bar adjustment systems that make the saw wrench obsolete. The majority of chainsaws still require some tools for bar adjustment.
Sturdy work area
You will want to use a well-built table, a tailgate or some other solid dry surface to hone your saw. Preferably it will be at waist height or at another contented level for you to work to save your back and legs from getting sore
How would you get a sharp saw?
- Tighten the chain
As you saw with the chainsaw the chain will likely loosen up. Simply use the saw wrench to avoid the looseness of the chain.
First, change the chain using the wrench to loosen the chainsaw bar. The bar is what they call the blade-shaped part of the saw that the chain runs on. Usually, there are two nuts holding the bar for the rest of the saw. They are usually easily accessible from the outside.
Once unfastened, there is a screw at the side of the bar that will adjust the tension on the chain. Tighten the screw to take the loose out of the chain to allow for a more stable saw and easier sharpening.
- Find a starting point on the chain
You have to sharpen the saw chain at the point where two cutting corners face the same direction.
Find the spot on the chain you are working on that has two cutting corners in a row that are facing the same direction. Make sure you can safely spin the chain on the bar by hand and look at the links to find the correct starting position.
Pro Tip: While this is not technically necessary for sharpening a chain, starting and stopping at the same link is important for ensuring you get a consistent cutting edge on the entire chain. You can also mark the starting tooth with a felt tip marker as a reference.
- File the cutting corners
When filing the cutting corners, the file will fit in the chain snugly when you find the correct position for the file. You will simply be filing a sharp edge onto the already fairly sharp part of the chain.
For each link, make sure you always:
- Keep the file level when running across the chain. Don’t direct it up or down.
- Use the same number of strokes with the file for each link. It usually takes eight to twenty strokes for each link.
- Keep the file pointed forward at about a 30 degree angle for each cutting corner.
- Twist the file a half turn on each stroke so that you are grinding out the link as well as filing it.
Pro Tip: Every cutting corner faces in the opposite direction of the last one. You must either sharp every other link and then switch directions, or switch directions for every link.
More to remember!
If you want to do more cutting and less sharpening you may want to check out these special products for easier sharpening:
- Depth gauge tool – this tool helps keep the chain cutting at a consistent depth so cutting corners don’t wear unevenly. You simply check the depth with the tool and file the teeth with a special flat file.
- File guide – These file attachments are relatively cheap and offer a visual guide to keep you filing at a perfect 30 degree angle.
- Sharpening vise – holds the saw by the bar so the saw is steady while you work on the chain. This can be a great alternative to leaning over the saw and trying to hold it steady while you work.
- Electric sharpeners – no more manual filing with these special grinders. You can plug them into the wall or hook them up to your car battery to take all the work out of chainsaw sharpening.
That’s it. We must say, however, that knowing how to sharpen a chainsaw makes all the difference when cutting. You will surely notice a huge difference if you follow these steps.
What’s The Best Method to Sharpen a Chainsaw?
Not only being inefficient, you are more prone to face the dangerous chainsaw kickback if you are working with a dull chainsaw. Few of the chainsaws come with a self-sharpening system. Chainsaws need to be sharpened from time to time when they become blunt to keep them working in the best conditions, as most do not come with this feature.
You can either sharpen you saw on your own or get it done by the experts in a local service centre upon seeing the saw becoming blunt. Many have in their mind that sharpening the saw is not an easy task, but it takes not much time to complete this task. It not only saves your money if you get it done at the service centre frequently.
Several methods can be adapted to sharpen saw chains. Few may opt to sharpen their blunt chains by a hand file or few prefer to use machines. While few use both the machines and the hand file to complete the task. Below are some of the several methods commonly used to sharpen the chainsaw.
- Approaching a Chainsaw Service Center
Saw chains become dull pretty quickly and need to be re-sharpened frequently in order to keep them sharp so that they work efficiently. The good thing about getting the chainsaw sharpened by a professional chainsaw service dealer is that the saw chain becomes sharp as new as they are well aware of the techniques on each kind of saw to be applied. Nevertheless, the experience and the ability of the person also matters
Even the most blunt and dull saw can be easily sharpened by the professional and the saw looks sharp as new. Good evenness and a decreased chance of improper sharpening which may lead to uneven cutter length. Also, the saw will be sharpened according to the manufacturer specifications when you get it done by the expert.
During the sharpening process, you may see that lot of metal is removed from the saw, if the operator is not familiar with the machine. This will wear out the chain very quickly. Also, it is and expensive especially as saw chains become dull very quickly and also problematic as you will have to go to the chainsaw service centre.
So, going to a chainsaw service centre is only suitable for homeowners and occasional chainsaw users who may only need this service a few times each year and may not have to make frequent trips to the chainsaw sharpening store.
2. Using a hand-held file
Using a hand-held file is one of the methods of manually sharpening a saw chain. It is used to sharpen the cutters and the depth gauges of the chain. To ensure that the angle kept is consistent at all times, the guide bar is held in place by a vise-grip as the chain’s teeth are sharpened each at a time.
You need not spend any money, if you prefer this method. The only thing you have to buy is the file. You need not wait any longer or travel to the chainsaw service centre. You can get the saw sharpened as fast as it can be done in less than an hour. The best thing about this method that it is friendly to the chain as it removes the least amount of metal from it during the sharpening which means that your chainsaw will last longer.
It requires skill. Sometimes maintaining accurate angles is quite difficult and may result in uneven sharpening which is dangerous as it may increase the chance of accidents. Best for chainsaw users who have experience using this sharpening method.
3. Using a Dremel tool
When using a Dremel tool to sharpen your saw chain, it is essential to understand the sizes of the stones and what size is suitable for your chain. The sizing is crucial in sharpening a saw chain correctly and successfully.
A Dremel tool works faster than using a hand-held file, especially with very blunt tools. You can sharpen your saw chain and use it in under five minutes. With cordless Dremel attachments, you also don’t have to remove the chain from the chainsaw in order to sharpen it.
Dremel tools and stones are quite expensive and are often not durable. There is a risk of applying too much heat to a tooth and damaging it. Maintaining angle consistency takes a lot of practice and is bound to be difficult for a beginner or new chainsaw user.
4. Using a chainsaw sharpener
Both professional and occasional chainsaw users can prefer the chainsaw sharpeners to sharpen the saw. There are various types of automated chainsaw sharpeners that are available in the market. You can find both the cordless and corded electric chainsaw sharpeners. They are very handy for heavy tasks.
A chainsaw sharpener is easy to use, fast and enables you to maintain accurate angles when sharpening your saw chains without fail.
As, it is a sharpener, it removes too much metal from the chain’s teeth and may reduce the life of your saw chain. Like Dremel tools, it is easy to use too much heat and damage the teeth of the saw chain.
It depends on the specific chainsaw user, who chooses the method to sharpen the saw. Some still prefer to use a hand-held file to sharpen in spite of using automated chainsaw sharpener.
Top 10 Best Chainsaw Sharpener Reviews
If you already own a chainsaw with a dull blade, then do not worry. We have a solution for you! Our chainsaw sharpener reviews will cover some of the best chainsaw sharpeners available in the market today.
If you are a new chainsaw user looking for a chainsaw sharpener, you can easily get overwhelmed by the various options available. The following list comprises simple and brief reviews of the top rated chainsaw sharpeners. I hope it will help you find a method and a tool that is most suitable for your needs.
1. Buffalo Tools ECSS Electric Chainsaw Sharpener
The best-selling Buffalo Tools ECSS is designed to be either bench, wall, or vice-mounted, and has an industrial-duty 85 watt, 60 Hz motor capable of clocking an impressive 4,200 RPM, making it good for quick grinding. It also adjusts to most popular chain types. This electric sharpener is also very stable, fast and quite easy to use. It is built to reach a speed of 4200rpm/ 120v and can be plugged into any standard 120v power outlet. Like the Timber Tuff, this sharpener is also can also be mounted on the wall, a bench and any work surface. It is also very stable making it easy to use for the operator.
Professional chainsaw users can easily use it and are designed to adjust to most popular chain designs.It can be used for different chain types and chain sizes. As it produces no noise, it can be convenient to use in your homes even.
- Can easily be clamped to a workbench for stability and sharpening accuracy.
- High-speed sharpening. Takes no more than 5 minutes for a complete 20″ chain.
- Works with most chain designs.
- 1/8” grinding width does not provide the most versatility in terms of sharpening size.
2. Oregon 510A Bench Chain Grinder
The Oregon 510A Bench Chain Grinder is a well-built tool fitted with excellent features that allow ease of use to the operator as well as fast and efficient chain sharpening. It has 3400rpm/ 110v, .38 Horsepower and direct drive motor with one-way motor revolution. It also has specially designed handles and dials that provide the user with a good grip as well a dressing Brick, 5-3/4 Dia. X 1/8 inches, 5-3/4″ dia. X 3/16- inch and 5-3/4″ dia. X ¼ inch thick grinding wheels (for depth-gauges) and a template whose function is to check the depth gauge, the wheel contour and chain size.
While some users find the grinder set-up instructions to be unclear, you can check out YouTube videos that show a step-by-step guide on how to assemble the grinder and use it.
- It is actually quite easy to set it up and once you have understood the chain specs and how to set up the machine, you will find that it is an excellent chainsaw sharpener.
- It is also a bit pricey.
Who can use this?
It is perfectly more suitable for professional chainsaw users and homeowners who use their chainsaws for heavy duty tasks and probably use a lot of saw chains throughout the year. It is perfect for anyone who uses or needs to sharpen a lot of saw chains.
3. 1 X Granberg Bar-Mount Chain Saw Sharpener, Model# G-106B [Lawn & Patio]
If you go by the name, it clearly tells you that Granberg Bar-Mount is a bar mount and not a sharpener by itself. So, you will be in need of a file that retrofits on this bar mount to sharpen your chain.
This bar mount is compatible with every chainsaw on the market and will provide a solid and firm foundation for you to start sharpening with a file.
It is very durable and long-lasting as it is completely made out of metal. In addition to this, proper micro adjustments of the depth gauge can be made so that it can sharpen any industry-standard chainsaw blade angle.
You can use any type of file with this unit as this is a manual sharpening tool.
- Attaches to your bar in a matter of seconds.
- Can be clamped for stability. Provides a solid foundation for you to manually file your chain blades.
- Made from metal. Durable and long lasting.
- This model does not come with a file. You will need to purchase it separately.
Who should buy?
If you are happy with manual sharpening on your chainsaw blades, then this product is geared for you. You have to be ready with your file to use this mount.
4. Timber Tuff CS-BWM Bench-top / Wall Mount Electric Chain Saw Chain Sharpener
The Timber Tuff CS-BWM comes with three grinding wheels to sharpen chains from 1/4″ to 3/4″, and has an easy to read adjustment guide that achieves fairly consistent results. It can bring a dull machine back to tip-top shape in just five minutes with its most powerful motor. Like most electric chainsaw sharpeners, it is easy to operate even for an inexperienced chainsaw user. The machine is fitted with grinding blades for 3/16-inch, 1/4 and 1/8 separately and comes with a free work light and a transparent safety shield.
Built with a capacity to reach 3600rpm/100V and an ability to produce a noise level of 70db with light 15w, this chainsaw sharpener is not only fast, it is also very quiet and convenient even when you live in a residential area or want to sharpen your chainsaw indoors. The Timber Tuff is also designed to be very flexible in that it can easily be mount on any working surface be it a bench or a wall.
- Like most electric chainsaw sharpeners, it is easy to operate even for an inexperienced chainsaw user.
- Very flexible and can be easily mounted anywhere.
- The only negative is that this sharpener is not very solid and thus not easily portable. You must take extra care when carrying it around to avoid breaking or dismantling it. It also has to be connected to power source and this limits its use.
Who can use this?
Anybody can easily use this sharpener. If you are residing at residential area, as it makes less noise, it best suits the household operations.
5. Timberline Chainsaw Sharpener with 3/16″ Carbide Cutter
Built with durable high-quality Machined Aluminum and an ability to sharpen each chain tooth to a precise same length and angle in seconds, the Timberline chainsaw sharpener is a great product designed for both professional users and the average homeowner. It is easy to use and also very portable making suitable for chainsaw users who move around.
This sharpener is also very flexible and can be used virtually on all chainsaws. It is, fast, easy to use and very efficient. This Timberline sharpener has also received many positive online reviews from customers for its quality, efficiency and durability.
- Small form factor.
- Very accurate blade sharpening and equal length sharpening.
- Fits on any type of chainsaw bar.
- Delivers a professional result regardless of experience level.
- It is a bit pricey for the occasional chainsaw user who only uses a chainsaw a few times each year but a great chainsaw sharpener nonetheless if you can comfortably afford it.
Who should buy?
If you need a mini manual sharpener tool that can deliver a fast and professional result on any type of chainsaw blade, this model is for you.
6. Stihl 2 in 1 Easy File Chainsaw Sharpener
The STIHL 2 IN 1 is a manual sharpening tool that is both a depth gauge and sharpening tool in one. To obtain a high level of sharpening accuracy with proper sharpening care, this helps you in achieving it.
This Stihl chainsaw sharpener works well with the Granberg Bar-Mount reviewed above as long as it is used on .325 chains.
- Provides more manual control over the sharpening process.
- Sharpens blades quickly and easily.
- Restores used and dull blades to near-factory quality.
- Only for.325 chains.
- Too time-consuming to use in a professional setting.
Who should buy?
If you need a quick and easy way to manually sharpen .325 chains then get this model. It doesn’t take much time and is effective and sharpens the dull blades.
7. Oregon 5/32-Inch Chain Saw Sharpening Kit 38276
This chain sharpening kit includes 1 assembled file frame, 2 wooden handles two files (1 round and 1 flat), a .025 drop center depth gauge tool and 5/32 –inch File Diameter. It is fast and very efficient enabling you to sharpen both sides of your chainsaw in less than 20 minutes.
The Oregon 5/32-Inch chainsaw sharpening kit is also reasonably priced and very easy to grasp and use even for a beginner with no chain sharpening experience. It has comfortable handles that make it easy to grip and use and gives you power over blade sharpness and sharpening angles.
This Oregon sharpening kit has received many positive online reviews from many chainsaw users for its quality, ease of you, sharpening capabilities and value for money.
- Affordable price.
- Easy for a novice chainsaw user and can comfortable to handle.
- When using this sharpening kit, however, you should be careful not to break the handle given that it is made of wood and hence may be easily breakable.
8. Dremel A679-02 Attachment Kit for Sharpening Outdoor Gardening Tool
The A679-02 Dremel sharpening kit is designed to easily sharpen blunt saw chain blades and a wide range of other outdoor tools. Together with an instruction manual, this kit comes with garden tool sharpening attachment, lawn mower sharpening attachment, gauge, insertions, a wrench, and 4 sharpening stones (453, 454, 455 and 932). It is, therefore, a multi-purpose tool that you can use to maintain all your outdoor tools keeping them sharp and efficient.Pros:
- The kit is designed to be compatible with all corded electric rotary tools and even some battery-powered tools.
9. Timber Tuff CS-12V 12-Volt Portable Electric Chain Saw Chain Sharpener
The Timber Tuff CS-12V is a more affordable 12V battery operated chainsaw sharpening solution. It weighs only a puny 2.2lbs and though not being as powerful as the other models in this chainsaw sharpener review, it does get the job done quite effectively.
It works with popular 20, 25 and 30-degree blade angles right out of the box. You do not need to purchase separate angle guides with this model.
The grinding stones rotate very fast, at 20,000 RPM delivering a smooth sharpening finish in a very small amount of time. This model best suits who are looking for Affordable and quickly sharpening tool. The caveat is that there is no angle adjustment on this device and you will need to be more careful when sharpening. Unless you have a skilled hand, it is quite difficult to obtain a uniform and level blade length sharpening with this tool.
- Very lightweight and portable.
- High-speed grinding delivers a smooth and fast sharpening result.
- Very versatile. Works with all common blade angles of 20, 25 and 30-degrees.
- Difficult to get an accurate and uniform sharpening length with this device.
Who should buy?
If you require a quick and dirty solution and don’t mind the lack of blade length sharpening control, get this unit. It is quite affordable and gets the job done quickly and easily.
This sharpener is suitable for all types of chainsaw users and perfects especially for those chainsaw users who move around because it is designed to be highly portable.
10. Oregon 511AX Saw Chain Bench Grinder/Sharpener
Built with a speed capacity of 3400rpm/115v and fitted with three grinding wheels; 1/4-inch, 1/8-inch and 3/16 inches respectively, the Oregon 511AX chain sharpener is designed to sharpen ¼ inch, 0.325-inch, ½ inch and ¾ inch pitch chains.
This electric sharpener is also very stable, compact and hence highly portable. This makes it especially perfect for chainsaw users who are always on the go. It also comes with a wheel-dressing brick and template which is designed for setting the depth-gauges and wheel curves hence enabling you to sharpen angles without adjustments and new tuning abilities for precise grinds as the wheel wears.
- It is fast, versatile and easy to use.
- Automatically aligns to the chain angle without manual angle alignment and delivers equal sharpening throughout. Unlike other sharpeners which may not be very stable, this sharpener is compact and can be carried around easily with no risk of breaking or dismantling its set up.
- It is quite expensive but it is a professional sharpener that you will get a high-quality machine for value money.
Who should buy?
Oregon chainsaw sharpener is geared towards professionals who have to sharpen a lot of chains in very less time.
Choosing the Best Chainsaw Sharpener
The term best chainsaw sharpener is relative. As each chainsaw user may have different preferences and everything may not be the best on another chainsaw.
Below are the factors to be considered while choosing the sharpener.
There will be different prices for different sharpeners. You can choose the one depending on the number of times you use the chainsaw in a year. Noticeably, if you use your chainsaw just a few times each year and tend to go through 2 or three chains, you need not spend anything more than this just for this requirement.
Always go for an easily operable tool when you are a novice in any field. The same applies to the saw sharpener. An easy to use the electric model or Dremel attachment can be a good option.
While some chainsaw users prefer electric models, others prefer to use manual hand-held files or use both automated and manual filing methods to sharpen their chainsaws.
How much you use a chainsaw
You will have to go through lot many saw chains, if you are going to use your chainsaw for heavy tasks throughout the year. Therefore it is better to buy a good quality chainsaw sharpener which helps you in sharpening the saw anytime and many numbers of times. Moreover, if you will be using the chainsaw a few times or for less easy tasks, you can invest in a cheaper and simpler option like a hand-held file or a Dremel tool which is cheaper but can still sharpen a saw chain.
Guidelines to safely sharpen a chainsaw
There must be the same care and safety to be observed while re-sharpening the saw, which is to be followed while using the chainsaw for some purpose to avoid any mishap.
Exercise Due Care
Always prioritize the care you must take while you use the chainsaw for any kind of purpose. Proper work area, things you need to operate the saw and the environment must be clean and not clumsy which leads to any human error causing accidents.
Wear Protective Gear
Always wear eye protectors, gloves and other recommended protective wear which are preferred while using a chainsaw when you sharpen the saw even. It will keep you away from the adverse results of the injuries that can occur while re-sharpening the saw. Better be prepared than suffer later.
Read the Chainsaw Manual
You will be provided with the user manual when you buy a chainsaw. The first thing you should be doing before you start using the chainsaw is reading the user manual. It will help you in efficiently using the chainsaw and avoid the accidents and failures. It also helps you in making you aware of the best practices of the chainsaw and makes the best of it. Proper oiling techniques and re-sharpening methods are also provided in the manual. It will suggest you go ahead with the best sharpening techniques and tool to choose.
Clean the Chainsaw and Check for Signs of Damage
Check if any other parts of the saw are damaged. Use resin solvent to neatly clean the chainsaw of all grease, sawdust and particles. If you find any damage, replace all the worn out parts before sharpening.
Tension the Chain for Sharpening
Always tension the chain together, as it will prevent the cutters from slanting while sharpening the chainsaw. It helps in maintaining correct positions and the chain tension should be restored to normal when the saw had been re-sharpened.
Use Appropriate-sized Files
Files used to sharpen the chainsaw must be appropriate for that particular chainsaw. If the file is too small or large, it is likely to sharpen the saw improperly.
Proper Positioning of the File Guide
Position the file guide above the cutter. Then lay it on the guide and see that it is in line with the witness marks. Using full strokes handle the file and file with both hands and file from the inside out, then apply a little pressure and let up on the return stroke.
Twenty percent of your file diameter should be above the top plate at all times in order to maintain proper angles.
It is the utmost important thing to keep the chainsaw sharp always, as it not only facilitates safety but also ensured that the chain cuts faster and more efficiently. Learning to sharpen the saw by yourself would be a better choice rather than going to a chainsaw service centre or buying a new one. It would save your money and the time in going to the customer centre for getting the saw sharpened.
You just have to invest in a sharpening tool or file kit that you will use to sharpen the chainsaw on your own. There are a lot of options out there that you can choose from.
The best chainsaw sharpener for you will depend on your needs and your preferences. You can search and analyze the chain pitch so that is suitable. Ultimately, the best chainsaw sharpener is one that best meets your needs and expectations.