DMT (Diamond Machining Technology)Diamond Machining Technology (DMT) FWCX Diafold 2-Sided Portable Diamond Sharpening Stone, Coarse/Extra Coarse

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!

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.

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!

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

DMT makes great, high quality diamond sharpeners. The diafolds are no exception. The design is great, and makes it a highly useful and portable tool to have handy. The 4 3/8 in x 1 in sharpening surface is the perfect size for a handheld sharpener. This particular grit combination, however, is not the best choice for general purpose sharpening. The fine 600 grit is plenty fine enough for most finish work. The extra-fine 1200 grit is extremely smooth, and is more for polishing the already sharp edge. For general sharpening, the fine 600 grit is great, but even it is not coarse enough to reform a rough or really dull edge (at least not very quickly). The best general purpose grit combination is the fine/coarse diafold. If I were going to buy just one of these, it would be the fine/coarse, but this fine/extra-fine is a great addition to the fine/coarse, and any other grit combo. I highly recommend DMT diafold sharpeners to anyone who values sharp knives, and versatile sharpeners. For those who would like to pay a little less but still get a high quality sharpener, I recommend Smith's sharpeners. They make a product similar to this that can be found on Amazon for around $15.

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.