Global Ceramic Water Sharpener GS-440SS

Product Information

A brand-new knife has (in theory) a perfectly straight blade, ground down to a precise cutting edge at a specific angle. As you use it, the metal on the edge gets damaged on a microscopic level, causing uneven spots that can get caught on foods and create a ragged tear rather than a clean cut. A sharpener does for a metal knife basically the same thing that sandpaper does for a wooden board: It shaves off a layer of uneven material to make the surface smooth and even again. Different models of sharpener use different materials and methods to remove metal, along with different methods of holding the knife in the correct position while doing so. To discover the best knife sharpeners on the market, we collected an array of dull knives—plus several boxes of Band-Aids—and tested their performance slicing through paper, carrots, and tomatoes (and a baguette, for serrated blades), both before and after sharpening. We also measured each knife's sharpness scientifically, using an Edge-on-Up tool to record the exact amount of force needed to cut through a standard material. Carrie Honaker, who updated this roundup, is a food writer who has wielded many knives over the years. As a restaurateur and avid home cook, she knows the importance of caring for your knives to maintain steady, sharp edges. Her work has appeared in many publications, including Bon Appetit, Allrecipes, and Wine Enthusiast. Place the heel of the blade (where it connects to the handle) against the steel, with the knifepoint angled slightly upwards.

All that’s left to do is dig out your blunt and damaged Global Knives and get them sent off to us to get them sharper than new!Effectiveness: The Edge-on-Up tool helped give us an idea of each sharpener's efficiency, but we also tested our knives immediately before and after sharpening to gauge any noticeable differences.

How well the sharpened knives performed: We examined their ability to slice through paper, tomatoes, and carrots both before and after sharpening. For models that claim to accommodate serrated knives, we tested their slicing performance using a baguette. A whetstone is much harder to use. To get a good result, you need skill and practice, plus considerable patience. We love Global Knives as the quality of the steel (CROMOVA 18) is fantastic. The steel has the great property of being hard but malleable and sharpens up really well to create a razor-sharp edge. As we work on Global Knives so often, we have sharpened and repaired pretty much every model and type of Global Knife including the Classic, Ni, UKON, and Sai ranges as well as the limited-edition models they produce. We can safely say our Global knife sharpening service is the best and most comprehensive in the UK. How sharp the knives turned out: We analyzed sharpness using a scientific tool called the Edge-on-Up, which measures the force needed to cut a standard reference material. The electric Chef'sChoice 130 Professional Sharpening Station is simple to use and works well on many different sizes of blades, while the manual Longzon 4-in-1 offers similar quality with a low price tag. For those on a budget, the electric Presto EverSharp is excellent, too. How We TestedWhen the sharpener has more than one setting, the coarse setting is the sharpener and the fine one is normally similar to a honing steel. Keep knives in a covered, safe environment when not in use," says Hartley. "Do a weekly light hone with steel or stone, always wiping away particles with a clean dry towel. Don't feel like you have to work fast—with a process like this, form is everything. Work out the proper form first, and then the speed will come." Can you sharpen kitchen shears with a knife sharpener? It doesn’t matter which knives you buy—they'll all need to be sharpened periodically. Besides making it easier to cut and chop, keeping knives sharp is also safer for your fingers: Dull knives can drag or skip while cutting, which can increase your chance of injury. How often you need to use a knife sharpener depends on exactly how often you use the knife, what you cut, and what surface you cut on, but professionals typically recommend sharpening once or twice a year. We did not expect a knife sharpener at this low of a price to work as well as it does, but the Longzon 4-in-1 really delivers. As the name suggests, the manual sharpener has four slots—three successively finer ones for standard knives and an extra-wide one especially for sharpening scissors and shears. Some manual sharpeners take a little practice to use correctly, but the Longzon's design and included directions make things simple. There's even a QR code link to video instructions if you're more of a visual learner.

The flexible belt helps accommodate knives of all different sizes, though we found that it also leaves a lot of wiggle room for the blade, making it somewhat difficult to keep knives at the exact correct angle through the entire sharpening process. The Easy Edge theoretically can sharpen a serrated knife, but it only sharpens the flat edge and not the serrations themselves, so we recommend against it. This knife sharpener is simple to use and sharpens very well, but with its high price, it's probably best for someone who spends a lot of time in the kitchen or is a professional chef. A whetstone combined with a honing steel gives the best results (better than knife sharpeners). But (and it's a big but) only use this method if you know what you're doing. Otherwise, you risk damaging the cutting edge of your knife.If your knife sharpener has a fine or honing setting, run it through that once or twice after the coarse setting. Do this in the same way, but with less force. To keep your knife sharp, use the fine setting once after every couple of hours' use. We choose the most popular manual and electric knife sharpeners available at UK retailers to test. We buy all the products we test and rate them on the two factors below. Sharpening ability According to Blake Hartley, Executive Chef at Lapeer Seafood Market, a sharpening steel removes material from your knife by moving the edge alongside the steel to restore the V-shape of a blunt edge. A honing steel is not used to sharpen but to restore the bent edge so that it's straight again. Pull the knife blade along the sharpening steel towards you, with enough gentle force that you can hear a grinding noise. Rebecca Treon, who also updated this piece, is a food writer, experienced home cook, and mother of two. Her work has been featured in BBC Travel, Huffington Post, Hemispheres, and Thrillist.