Fortunately our product review experts have put their noses to the grindstone (so to speak) for you and come up with a comprehensive list of the 14 best knife sharpeners on the market today. They’ve cast a wide net that includes everything from the most elaborate mechanical devices to the simplest sharpening sticks and stones so you’re bound to find one that fits your needs, temperament and budget. Keep in mind that any opinions expressed here are those of our experts.

Although the Trizor XV is easy to use, you have to use it correctly. That means sharpening one side of the blade at a time until a burr forms, whereas a back-and-forth, one-side-and-then-the-other approach might seem more intuitive. (Don’t worry—the Trizor XV’s manual explains the process plainly.) Maintenance is easy: Once a year or so, you open the bin on the machine’s underside and wipe out the metal shavings that it has conveniently captured there with a magnet.
In terms of feedback, in the eyes, and in the hands of many sharpeners, the feedback on this particular brand of stones is not to their liking and often it is enough to stop them from using them. These are thinner than other stones as well so you may get the impression that you are not getting your moneys worth. They are very hard stones, there is no soft, creamy sensation as you sharpen, there is not much feedback at all in fact.
Most electric sharpeners use a 2 or 3 step process to create, sharpen and hone the edge of your blade. The first step in the sharpening process involves using a coarse grit, which sharpens extremely dull or damaged blades. The last step in the process uses a fine grit, which hones the blade to the desired finish. When an electric sharpener is turned on, it spins the sharpening stones. These stones sharpen the knife placed in the slots, to the desired sharpness. Most of them come with guides, which allow you to obtain the perfect angle. This makes them popular since they simplify the whole process of sharpening knives.
The AccuSharp Sharpener is proof positive that you shouldn’t judge a book by its cover. While it looks like something used to attach buttons to shirts it’s actually one of the most cost effective, and we mean effective, means around for restoring a professional edge to your dull knives. It’s compact, screwed together rather than glued and its diamond coated tungsten carbide wheels create an edge that will last.

In most cases a sharpening stone will be a combination of sharpening grains and a binding agent. However, in case of a Ardennes Coticule it is a completely natural product. The grains have cutting edges which enables them to sharpen your knife. As soon as a sharpening stone is used little pieces of the grains break off, revealing a new cut ing edge. The higher the number, the finer the grain. Stones with coarse grains (up to grain 400) can be used to shape the blade of a blunt knife. You can subsequently take care of the fine finish with a stone with a smaller grain.
The word “Novaculite” is derived from the Latin word “novacula”, which means “razor stone” and is essentially a metamorphic, recrystallized, variety of Chert composed mostly of microcrystalline quartz that is found in the found in the Ouachita Mountains of Arkansas and Oklahoma and in the Marathon Uplift of  Deposited in the Devonian Period and the early Mississippian Subperiod some 410 to 325 million years ago and subjected to uplift and folding during the Ouachita orogeny of the Atokan Epoch (early Pennsylvanian Subperiod), Novaculite is a very tough stone that is resistant to erosion and thus, the various layers of Novaculite stand out as ridges in the Ouachita Mountains. Thus, due to both its availability and its composition, it has been mined since ancient times for use as arrowheads and spear heads as well as in more modern times for use as sharpening stones.

In our tests, the Chef’sChoice ProntoPro 4643 took seriously dull blades—we ran them against a chunk of concrete curbstone until they were all but useless—to tomato-filleting sharpness in less than a minute. And like all our picks here, it’s far easier to master, and far cheaper, than traditional sharpening stones or modern jig systems. Effective, affordable, simple to use, and easy to store, the ProntoPro 4643 is the clear winner for most people.

Additionally, this completely portable kit fits inside a carrying case, allowing for easy transportation for camping or hunting. The kit can handle blade sizes ranging from small knives to machetes, as an Amazon customer reviewer explains, and all of them will be incredibly sharp. However, another Amazon reviewer said the system didn't work well with extremely thin bladed knives, such as a fillet knife.
Despite being called a “4-Stage” sharpener, this is actually two 2-stage sharpeners in one. You can easily choose between a two-stage sharpener built for a 28 degree angle (14 degrees per side) and one built for a 20 degree angle (10 degrees per side). A sliding plastic guard covers whichever type you are not using to reduce confusion and stop you from accidentally placing your knife into the wrong slot. As someone who likes some knives to be sharper than others, I find this to be quite an impressive feature.
I purchased this set together with the 400/1000 grit stone assuming that some of my knives were quite dull and would need work on a coarse grit stone. Premium Whetstone Sharpening Stone 2 Side Grit 400/1000 | Knife Sharpener Waterstone with NonSlip Rubber Base & Flattening Stone. This is my first wetstone. First off I tried to sharpen my Chicago Cutlery boning knife. This knife is nearly thirty years old, has been abused in may ways and was quite dull. It was very difficult for me to get a burr on this blade, which I attribute to poor technique. Next I moved on to my Henckels Professional S paring and chef's knives. The paring knife was moderately sharp and was modestly improved after working over all three grits of stone. It would cut paper but again it was difficult to develop a burr with this blade. Undaunted I switched to the chef's knife. This knife is twenty years old and has never been professionally re-sharpened. I have sharpened it twice with a Lanksey sharpening system which marred the finish but did put a good edge on the blade. Lansky Standard Coarse Sharpening System with Fine Hones. The chef's knife was moderately dull and had several pits visible on the cutting surface. I modified my technique for passing the knife over the stone and worked the chef's knife over the 400 grit stone aggressively and eventually I was able to get a burr to form from the tip of the knife all the way to the handle. From there it was a simple process of reforming the burr on the 1000 grit stone and then finishing on the 6000. After sharpening, the chef's knife easily and cleanly slices a tomato with very light pressure and is in my opinion very sharp. Not sushi knife sharp but more than enough for the chopping and slicing I expect of it. I'm looking forward to going back and working both the boning knife and the paring knife over again. Don't expect a good result from this product the first time you use it. Watch videos on using a wetstone, expect to spend at least twenty minutes per knife at first, and practice forming a burr. If you can form a burr, you will be able to successfully sharpen your knife.
I have this one and the axe/machete version as well. These are great sharpeners that make very short work of getting blades sharp. They take off quite a lot of material and are quite different than most other stone sharpeners I have used in the past, so I try to be conservative with my pressure as you see the chips fall when you pull the knife through. But, they absolutely work, and work very well. If you have a high use knife, this is a great way to keep it sharp and in service all the time. I use my large bushcraft knife a lot more now that I have this since I can sharpen it much faster and easier. I would not use this sharpener on precision instruments just because I prefer more control and try to preserve material on those types on knives. But, bottom line, I get more work done and much faster now that I have this.
The surface of these types of metal alloys will not discolor due to rust or other oxidation. These special alloys are different to carbon steel because they are metals that have an active-passive nature. Nevertheless, they can often rust—although you may not notice it. Food residue or water can allow rust to form in places where oxygen cannot easily reach. Rust can quickly penetrate near the blade tip, so wash your knife in a detergent solution after use, then dry it with a towel and store it in a dry place.
This tiny, retractable rod has actually been designed for light sharpening and honing all in one step. Based on its size, I believe that this rod is best used by those who are uncomfortable flinging long knives and rods around as they attempt to put a finer edge on their blades. Its compact nature also makes it perfect for those who need to bring it with them on the go.