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These compact, portable sharpening stones for knives provide 2-stage sharpening and make a great addition to a whetstone sharpening kit. A continuous surface sharpens edges much faster than a conventional knife sharpener stone. Fine diamond (25 micron / 600 mesh) hones any blade or chisel to a razor-sharp edge. Coarse diamond (45 micron / 325 mesh) restores neglected edges. Folding plastic handles protect the whetstone knife sharpener when not in use. Professionals rely on the superior quality and versatility of DMT products.
From the Manufacturer
Dual purpose with compact convenience, the Double Sided Diafold sharpener offers two 4" x 1" diamond whetstone surfaces in one lightweight, portable sharpener. Multi-use on blades, kitchen knives, specialty and garden tools, etc. Fine diamond (25 micron / 600 mesh) for a razor sharp edge. Coarse diamond (45 micron / 325) to quickly restore a neglected edge. Convenient size: 9 1/2" open. 5" closed. Folding plastic handles protect sharpener when not in use. Sharpens in a fraction of the time required by conventional stones. No messy oils needed--sharpen dry or with water. Durable construction will provide years of consistent performance and reliable service For proper tool maintenance, woodworkers, chefs and other professionals rely on the superior quality and versatility of DMT products. Made in USA.
Amy C. Zimmerman
Reviewed in the United States on February 21, 2025
The last diamond sharpener I owned lasted thirty years. This is very easy to use with the handle making it steady and safer. I am pleased with the results from this sharpener.
John Lilley
Reviewed in the United States on March 6, 2024
This puts a very good edge on all of my knives. It can be used wet, which I don't think changes the performance but makes it easy to clean. It won't rust. You do have to be careful not to overuse the coarse side, it will wear down your blade eventually.
Parviz
Reviewed in the United Arab Emirates on March 2, 2024
It's really a great kitchen necessary tool, which can make a knife like a Japanese ninja sword.
Fuel683
Reviewed in the United States on December 17, 2024
Finally decided to replace my old DMT sharpeners after 5 years. These brought a razor sharp edge back in a matter of 3 minutes.
Jameswbeemer
Reviewed in the United States on December 13, 2024
Rough side works really good how ever of you use the fine side it polishes the edge too good. I’m not exactly skilled at sharpening to it could be a problem how I handle it. Definitely recommend this product
Penn Naim
Reviewed in the United States on October 26, 2024
I sharpen my kitchen knives every week or so, depending. Maybe that's more wear than this was designed to take. I glued it back together where it broke on the brad holes, but it now has only one piece of handle still useable. Sad, because the stone itself still sharpens. I had one like this previously that was mislaid or I'd be using it. Those handles were still going strong. Alas.
Tim Hammond
Reviewed in the United States on October 13, 2024
DMT stones work very well, great product. Wish they were a little bit longer lasting though. The diamond is adhered to the aluminum plate and wears off after a while
Andre Pint
Reviewed in Belgium on January 25, 2024
Simplicité et peut être utilisé comme une lime.
Montaigne
Reviewed in Germany on December 17, 2023
Erstes Gerät nach meiner Erfahrung - und ich habe allerlei ausprobiert -, das wirklich tut, was es soll, nämlich stumpf gewordene Klingen wieder verwendbar machen. Hat seinen Preis, der aber durch das verwendete Material, Effektivität und lange Haltbarkeit und Wirksamkeit - Kauf erfolgte vor über 4 Jahren ohne bisher feststellbare Funktionseinbuße - absolut gerechtfertigt ist.
Pierluigi
Reviewed in Italy on May 6, 2021
Ottimo pietra da campo, con la grana grossa(blu) si puo rettificare facilmente un filo danneggiato dii coltelli e accette, con la grana fine(rossa) si ottiene un ottimo tagliente.
A. C. Seruntine
Reviewed in Canada on April 10, 2017
Light, effective and performs as promised. Great field sharpener. Best I've used to date except for small water stones, but much more convenient and practical in the field than water stones.
Alan Best
Reviewed in the United States on August 7, 2015
I received this product at about 15:00 today and am writing this review at 22:00 because, we'll, it's blown me away. Up until this point in my life I've used oil and wet stones and thought that Japanese wet stones were the best thing out there. Then one day Amazon recommends this product to me, and looking to lighten my pack a little by replacing a small stone and steel, I thought what the heck I'll give it a try. I ended up touching up my skinning knife, ax, kitchen knife, and even went over to my brothers to do his knives. What used to take my 10-15 minutes on a wet stone is taking me 5 minutes, including stropping with an old belt. In that amount of time my knives push cut paper, which is easy, and shave like never before. I'll typically hold off to write a review to see how it holds up, but after 5 blades and no signs of deformity on the sharpener I couldn't wait to share my thoughts.This sharpener is built extremely well, and you can tell that the individuals that produce it take a lot of care to insure they put out a good product. The handle of the sharpener, which folds around the stone part to protect it, is made from a light weight plastic and is held in place by 2 pins. This is the only piece that I could see failing, but honestly aside from throwing it while open it will more than likely hold up.This is a fantastic product that makes sharpening quick and easy. I only wish I didn't throw this in my "wish list" 6 months ago due to me being skeptical of how well it would work. I will purchase this product again if needed, and in the meantime I'm going to be purchasing the Coarse/Extra Coarse for blades that need to be reshaped. Great Product DMT!
L Parker
Reviewed in the United States on February 22, 2012
You know, I did quite a bit of research before I purchased this little dandy. I read the reviews of all the stones, the various diamond sharpeners, the whole bit. Additionally, I looked into the "guides" and anything else to simplify the sharpening process. By no means am I a knife/survive in the wild/kill a tiger just by looking at it kind of guy. However, this sharpener was easy, fast, and efficient.If you have questions about appropriate technique, look up a youtube video or check on the dmt website--easy as cake, and a blade as sharp as you could need. I purchased the coarse/fine one (red & blue), but I figure I'll pick up the extra fine some time down the road. Now, for the breakdown:Pros:1) Compact--the sharpener folds into the handles (which you already know, by now)and it's double sided.2) Effective--a gently, consistent motion gets you blade just where you need it. The instructions with this sharpener state that it should only be used for camping/hunting knives, etc., but I took the kitchen knives to task. A couple of them were so dull that I could run them across my finger with no consequences. Now, I don't dare. The knives cut through paper and cut tomatoes (and other veggie sundries) with ease. Just maintain a consistent angle and motion, and you should be fine. Not rocket science.3) Efficient--My kitchen knives took a bit longer (for the reason, see #2), but everything that had a reasonable edge took less than 2-3 minutes. If your knives are real garbage you may want to start with the extra coarse, but I'm too cheap right now. Time was a factor, and this beauty delivered.Cons:1) On the coarse side, the diamond coating was missing along one small section of the edge. I know, I know, it really doesn't matter in the least, but I'm just kind of particular like that.That's it. Ecstatic about my purchase, will never look for another sharpener! Good luck!
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