Work Sharp Ken Onion Edition Knife Tool Sharpener Elite Mk2 - Adjustable Knife Sharpening System with Blade Grinding

As a Sushi Senior and avid knife enthusiast with a serious collection of Japanese cutlery, I've spent years with traditional whetstones achieving a truly perfect edge was always time-consuming and inconsistent. The Work Sharp Ken Onion Edition Mk.2 (KO2) has completely revolutionized my sharpening routine, especially for my high-HRC Japanese blades. ​The Japanese Knife Test: Unparalleled Control and Finish ​The primary concern with any powered sharpener and Japanese knives is overheating the thin, hard steel and maintaining the shallow, acute edge angles they require. The KO2 excels in both areas: • ​Precision Angles for Japan: Unlike fixed-angle sharpeners, the KO2's adjustable guide ranges from 15 to 30. The 15 setting is the sweet spot for many traditional double-bevel Japanese knives, allowing you to establish a perfectly clean, consistent, and aggressive edge bevel every time. • ​Variable Speed is CRITICAL: The 7-speed electronic motor control is the feature that makes this safe for delicate Japanese knives. I can use the lower speed settings to work slowly and coolly, ensuring the thin steel never overheats or loses its temper. • ​The Finishing Touch: The included belt kit, especially the extra-fine belt allows for a truly polished, mirror like finish that is essential for maximizing the performance of Japanese steel. The resulting edge glides through paper-thin vegetables with zero resistance. ​Why the KO2 is Worth the Investment • ​Convex Edge Advantage: The flexible abrasive belts create a slight convex profile on the edge. This provides superior strength and edge retention compared to a standard flat bevel, meaning your razor-sharp Japanese knives stay sharp for longer, even with heavy use. • ​Total Versatility: When I’m not perfecting my kitchen knives, the KO2 handles my pocket knives, outdoor tools, and even scissors with ease. It truly is an all-in-one sharpening station. • ​Repeatable Results: The guides take the guesswork out of sharpening. Once you find your angle like 15 for a gyuto, you can lock it in and achieve the same world-class edge instantly, without having to practice your freehand technique. ​The Verdict: ​If you are invested in high-quality Japanese knives, do not hesitate. The Work Sharp Ken Onion Edition Mk.2 provides the necessary precision, control, and fine finishing grits to maintain these sophisticated blades better and faster than traditional met hods. It’s an indispensable tool for anyone serious about edge maintenance. Stop struggling with stones and get to slicing! Read more

so i started with the precision adjust elite fixed angle system because i was intimidated by sharpening my knives by hand on a belt system- but i quickly realized after sharpening a few of my knives by hand that my time is way more valuable than sitting and sharpening knives by hand all day. plus not to mention that precision setup is janky as could be. so i returned the precision adjust and bought the ken onion system. i got amazing results on my very first knife. its not rocket science. hold the knife straight/level/parallel to ground be smooth and fluid with your movements and you’re golden. this system sharpens knives in no time. i was taking cheap chinese kitchen knives to practice on and able to get razor sharp paper cutting edges with no problem. moving on to my better quality knives it only got better! the ability to go down to 10 degree angles is perfect for my santoku knives. something not possible with the precision elite without taking it apart and modifying it. if you’re on the fence because this type of system might me intimidating, don’t be! it’s not that difficult. my only regret is not investing in a system like this years ago and using dull knives this whole time. it’s a decent investment for this system no doubt, but if use your knives regularly it’s a solid investment learning a skill and having the equipment to take care of your own knives. not to mention you have the option to sharpen, lawn mower blades, axes, chisels etc. if it can be sharpened this tool can do it. Read more

I can't say enough good things about the Work Sharp Ken Onion Edition Mk2. This sharpener has completely changed the way I maintain my knives and tools. Whether it’s kitchen knives, pocket knives, or even garden tools, this thing handles it all with ease and precision. The adjustable angle guide is a game changer—it lets me get the exact edge I want, from razor-sharp to robust utility. The variable speed control gives me full control over the sharpening process, and the upgraded Elite Mk2 version just feels more refined and user-friendly. What really impressed me is how consistent and professional the results are. My blades are sharper than ever, and I actually look forward to sharpening them now because it’s fast, satisfying, and effective. It’s also super versatile—I’ve even used it on scissors and axes with great results. If you’re serious about keeping your blades in top condition, this is hands down one of the best investments you can make. Highly recommended! Read more