DMT W250CXNB 10-Inch DuoSharp Bench Stone Coarse / Extra-Coarse

This sharpens all woodworking blades very quickly and easily to a fine cutting edge. One side is a coarse and the other is a fine grit. The large size allows it to handle larger cutting edges. I don’t like the small size of the end tabs.

Great for all purpose sharpening. It’s my go-to stone for sharpening speedskating blades. However, you would also need to get the Green/Blue stone to achieve the final polish. Durable and consistent results. Amazon had the best price as they were on sale for a while.

Sharpening stone works great. Made from a really good material. Highly recommended.

This is a general review for all 3 of the DMT 10-inch DuoSharp stones that I purchased. (I didn’t want to write three separate reviews)

These are the most excellent knife sharpening stones I have ever used. For the Coarse/Extra Coarse they cut through metal quickly and with very little pressure. Can profile a butter knife in less than 5 minutes.

For the Fine/Extra Fine it is no problem to polish the edge to razor sharp. Again, very little effort.

As to durability, well lets just say I have sharpened over 100 knifes, including an axe, a small sword, and a few exotic/specialty knifes and I don’t see any signs of wear at all.

I bought the black plastic holder for each stone (3) to minimize the risk of dropping/breaking the stones. For some of the larger knifes it is actually easier to clamp the knife/sword/axe down and hold the DMT stone and holder in the hand. I follow up with a leather strop for final polish, and the edges are hair popping sharp.

If you have expensive knives like i do it might not be for you, but I use it to sharpe my other knives.
It is easy to use and quick to get your knives to be sharpened. With the non slip holder this will be a life safer for your regular knife sharpening 🙂

MONSTER real estate to sharpen my survival knife’s A++ as only DMT can deliver. (Avoid Smith products at all cost) I can finally shave with my Buckmaster 184…which is no easy task with a blade over 1/4″ thick..

Use this bad boy when needing to do final hone on most of my wood working tools. Great value in that I have had their products last over 10 years and then the body goes down to a finer grit so you are getting closer to the 1200 to 3000 grit water stones. Always with me when I need to do serious sharpening.

I have several small DMT stones that I used for a number of years and been pleased with all of them. These seem to be expensive and I debated with myself over that, but figured I could send them back. I ended up extremely pleased with my investment and it has exceeded my expectations every time I’ve used it. I also purchased DMT’s mount for the stone which can also be used as a handle and am just as pleased with it.

This stone is really great. I bought a DMT course stone from another vendor, but it wasn’t aggressive enough to reset the angle of my hand planes I use for wood working. I ordered this one, and the Extra Course side made quick work of changing the angle. The large 10” size makes sharpening and honing very convenient and easy for my MK II to slide across. After this I can quickly finish up with a Shapton 1000 grit, and put the final polish on it with a Shapton 4000 grit. The outcome is outstanding thanks to this awesome stone. Highly recommend it. It came with a non slip mat which was nice too.

With this stone, I can put a brilliant edge on my knives. And unlike ‘real’ whetstones, this one doesn’t wear into non-flat shapes.

But – not as good as the hype.

I have found the trend stones to be more to my liking, although they are overpriced too. It might take a leap in technology before woodworkers and chefs have access to something that works the way we expect it too.

I have several trend and DMT diamond stones, and several stone “stones”. I know how to use them too.

I think competition might be our best friend here.

While I’m no sharpening expert I know a little bit about grinding and honing tool edges, primarily plane irons. Previously, the rough grind would be done on a grinding wheel attached to my bench grinder/polisher which did the job, not well, but OK. Following that I would hone the rough edge with sandpaper and water stone. I got tired of re-honing the grind on 80 grit paper which was a lot of work so I decided to try the DMT DuoSharp Bench Stone with coarse/extra coarse sides. What a pleasant surprise. The extra coarse side took off the old metal and created an excellent properly angled surface in less time than my grinder and the coarse side took the place of the 80 grit paper, again, in half the time. After the coarse honing I went back to 120, 240, 800, and 1200 paper before using the water stone, but each successive honing was much easier after establishing the original bevel with the DMT W250CXNB. It IS a little spendy but worth it If you do a lot of tool sharpening. You can spend the extra money and get a holder for the stone but it comes with a non-slip pad which works great so the holder isn’t really a necessity. I was so impressed with this item I recently purchased the DMT DuoSharp Fine/Extra Fine stone for the next level.

I purchased this Bench stone to use as a flattening plate for my Shapton stones. It works great. I have also found it works great as a very course stone for flattening the backs of new chisels, plane irons, before I move to my 1000 grit Shapton stone. Thanks DMT for a quality product!

This stone is very easy to use, nicely made, and very effective on my very expensive knives. Easily used with water, is very fast to make a sharp edge, easily cleaned and easy to store in kitchen. This stone is far superior to all others I have tried – which are many. My only minor complaint is that I think, as superior as it is, the price is not reflective of a “fair” price for this item – although I understand the market decides.

Left my set of 2 new stones on a job. GONE! Like the product so much, shelled out the serious cash for another pair. Ouch! I previously reviewed this product.

This will quickly shape or rough-sharpen any steel cutting edge. You will also need a fine and extra fine stone to finish the sharpening job, however.

DMT offers an outstanding warranty. Wreck the stone by sharpeming something incorrectly (as i did with a fine/extra fine stone) and it will be replaced at no charge. Just sent it to them. It does take a month or so to receive a replacement stone, however.

I was skeptical at how well this would work, but I had not found a anything that would sharpen a blade to my satisfaction. I like that is sharpens very fast, puts on a fine, sharp edge. Yes, it is very expensive, but for those who appreciate sharp knives in the kitchen, I think this is a must have. I find myself much more willing to sharpen my knives with this device than others (most which I was dissatisfied with the sharpness).

This stone really does a good job. It is the first diamond stone I’ve owned. One thing I’m not sure of is if the stone is marked correctly. It is a coarse and fine combination, but I think the stone is labeled wrong. I think the side marked as coarse is actually the fine side. I would give it a 5 star if I wasn’t baffled about that.

I’m a 25 year professional carpenter. I’ve seen, own or tried just about every sharpening system available. I’ve used this and the sister 10″ DuoSharp stone constantly for 20 years on the job site. This sharpener is small, lightweight, portable, requires no electricity, no oil, almost indestructible, short learning curve and quickly gives a scarey sharp edge. Quality isn’t cheap. Buy it once and you’ll never regret it.

This wet stone allows you to refine a knife edge with minimal effort. Notice that I said REFINE an edge. If you are looking to CREATE and edge or SET an edge, than you probably want a stone that has a much coarser finish to it. Try buying one of the DMT Extra Course or Coarse stones if that is what you desire. However, if you are looking to polish/hone an edge on your knife, this is the stone for you. Much superior to old school oil stones. Highly recommended!!!

I use water stones for sharpening my chisels and plane irons. The stones are friable and, despite attempts to use the whole surface, they lose their flatness. I have tried the gamut of corrections, using sandpaper or drywall mesh on a flat granite surface (messy, slow, and expensive), rubbing the stones on each other (futile), and using a cinder block to abrade the wet stones (useful until the concrete wore to a central dip). I have read of success using the most coarse DuoSharp and decided to buy it and dedicate it to this purpose. The DuoSharp is quite flat in registration against a straightedge. I have used it so far only to flatten my best Shapton stone, 5000 grit. Under running water I rubbed the stone against the DuoSharp and got by far the quickest and flattest surface.
I do not intend to use the DuoSharp on the bevels of my cutting tools, and expect it to serve its dedicated use as a flattening plate indefinitely.

This sharpening stone is BIG! It’s about 4″ wide and 10″ long. Because it is diamond incrusted, it will last almost forever. I use mine for fixing damaged chisels and plane blades along with flattening my Shapton water stones (Its real purpose).

The large surface is great for sharpening hand plane blades, and smaller blades as well. You won’t be sad that you spent the extra for the larger surface. The dual grit works well. I purchased all 4 grits, (two stones) and sharpen all my hand plane blades, chisels, and router bits with these.

This piece completes my set of Duosharp 10 inch bench stones. The extra coarse is a big step from the next finer grade, and I doubt that anyone really needs a bench stone coarser than this one. To illustrate, let me tell you that while in use the stone is noisy, as in “Wow, this extra coarse stone sounds like I’m scraping my butcher knife on concrete!”. I bought it for sharpening tools, but since I had a new, extremely dull, very large butcher knife I put the initial edge on it with the extra coarse. It works fast and it leaves a rough edge, but if your goal is to cut a new profile on a knife this stone will do the job. After working for a while to get the profile cut with the extra coarse side a few passes with the merely coarse side gave me a knife that would cut paper easily. A little polishing work with a fine stone and I had a remarkably sharp butcher knife in much less time than I could have without using power tools, with no risk of overheating the blade and ruining the heat treating.

If you have the plastic base (it was cheaper to buy it separately than with the stone, don’t ask me why) you can flip it over and use the handle to sharpen garden or woodworking tools, too.

You have to love it when you invest in one item that you randomly pick, and it turns out to be the last one you will ever need to buy.

I did a bit of research prior to buying – and it turned out to be the best purchase for the kitchen, after the food processor.

Now – some five plus years later – it still works like a charm, and all of my expensive knives are in topnotch conditions, thanks to this sharpening stone!

I’ve tried several different sharpening systems, and sharpeners over the course of my lifetime, and without a doubt, the DMT DuoSharp is the best I’ve personally used. The Stone is very effective having both coarse and fine sides to it, and it is quality built. I will have this stone for my lifetime, and my son will probably inherit it after I’m gone.

If you’re looking for a stone to take a damaged or totally unsharpened edge to a razor edge, then this is the one you need. If a more polished edge is what you’re after then the Fine, Extra Fine is the one for you. With these two stones, you can sharpen and hone then polish anything from a pocket knife to a hatchet and then on to a Samarai Sword. I’m currently working on putting a razor sharp edge on a Hattori Hanzo replica sword my son owns.

This is a pricey stone, but remember… you get what you pay for!

I’d buy it all over again!

This fine/extra fine whetstone is all that it promises & more. I bought it because of it’s large size to accomodate my kitchen knife collection. This whetstone gives me a razor’s edge, but I would suggest it’s use with a couple of other products:

1. The duosharp coarse/extra course whetstone

2. The DMT whetstone duobase to hold the whetstone securely during use

3. A mousetrap hone, because sharpening is NOT the same as honing.

I purchased this item to sharpen woodworking planes and chisels. Good quality item. Works just as advertised. The larger size allows me to use a Veritas roller jig to keep the blade angle steady (although the jig is not worth the money for other reasons). Water wash off and easy cleaning. The plastic base is worth the extra money IMHO, but the antistick plastic mat works pretty well.
I also used the “scary sharp” system to put a razor sharp edge on the blades. This is a automotive sandpaper on flat plate glass. The DMT fine whetstone is about a 15 micron equivalent where the “sandpaper” goes down to 0.5 micron. The chisel edge shines like a mirror.
My only disappointment was in flattening the backs of old chisels. A coarser grade of diamond is needed for this higher metal removal technique. I tried coarse grade sandpaper, but it wore out quickly. The finer sandpaper grades do not because they only recieve 5-10 strokes after the diamond stone.
For knives and general sharpening utensils, this diamond plate is great. For woodworking, I would buy the coarse / x-fine combination whetstone. Use the coarse side for the one time flattening and the fine or x-fine side for the intermediate surface grinding. Keep one 9″x12″ glass plate of really fine micron sandpaper for the final polish.