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The perfect portable addition to any tool kit is the Mini Diamond 70mm stone in DMT's signature polka-dot pattern. Set of 3 comes with a Coarse (45 micron / 325 mesh) option for quickly restoring neglected edge, a Fine (25 micron / 600 mesh) option for creating razor-sharp edges, and an Extra-Fine (9 micron / 1200 mesh) option for polishing and refining razor edges after sharpening with a coarser diamond. Micron-sized monocrystalline diamonds are conveniently sized at 2.75" x 1" x 0.25" and securely bonded in nickel that is electroplated to precision-ground steel. An injection-molded polycarbonate base increases the structural rigidity needed to maintain a flat sharpening surface. Our innovative recessed dot pattern is the key to the DMT difference. By providing a space into which metal produced from sharpening can be cleared, the dots keep the diamond surface clean for fast and efficient honing of all materials.
From the Manufacturer
A portable enhancement to any tool kit is the Mini Diamond 70mm stone in DMT's signature polka-dot pattern. Kit of 3 comes in Coarse (45 micron / 325 mesh) to quickly restore a neglected edge; Fine (25 micron / 600 mesh) for a razor sharp edge; Extra-Fine (9 micron / 1200 mesh) to polish and refine a razor edge after sharpening with a coarser diamond. Size: 2 11/16 x 15/16 x 3/16 Sharpening with diamonds is fast and easy. 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.
Tony B
Reviewed in Canada on March 9, 2025
I sharpen skates with a Sparks sharpener and use these stones to deburr the skates afterward. They are the perfect size and very comfortable to hold. I mostly use the blue one, finish with the green one, and keep the red one in my hockey bag for pre-game touch-ups. These stones have become an essential part of my skate maintenance routine.
AmaZon_cUstOmeEr
Reviewed in the United States on March 12, 2025
Thickness was less than I thought, so my angle guide needs a longer screw to secure these files.
A Movie Buff
Reviewed in India on September 24, 2024
Needs patience to get the result you desire. Handy for home use.
Jay from maine
Reviewed in the United States on September 2, 2024
DMT is a great brand and I was happy to find these for the price. To me they are a good value but IF YOU ARE NEW TO SHARPENING KEEP READING. These are small, as is accurately stated in the product description. I bought them to keep in a tool box for touching up chisels and the like. They work great for that. I also bought a full size sharpening block to keep in the kitchen for my knives. The DMT set is great and will last for years bur is best for things smaller than a pocket knife This set is a great choice for many jobs and I recommend it, but it isn't for every job. Be safe and buy kitchen tools for the kitchen and shop tools for the toolbox.
Richard Kleimeier
Reviewed in the United States on May 9, 2024
These are great lil diamond knife sharpeners. Each color is a different grit level. I keep these in my Bug Out Bug for sharpening in the field. Pro Tip: These are a tad small and I have large hands so I got some self adhesive hook and loop tape and stuck one side on the sharpener and the other side on a paint stir stick. Now my hands are farther away from my sharp knife. And because its hook an loop I just use one paint stir stick and switch them out as needed.
glenn woodson
Reviewed in the United States on March 7, 2024
First, these are small because they are stones designed for ski/snowboard tuning equipment. Yes, they can be used for other things but you are not buying stones designed specifically for knives, scissors, etc.Second, the stones are similar to what I already had and was replacing. They are exactly what I needed,Third, this came with the Coarse and X-Fine but not the Fine. That is disappointing since for touchup on skis, I needed the Fine most of all. This is also why I downgraded the rating (for now) since I needed this for to clean up son's ski edges for a race Saturday and cannot get a stone locally to prep his skis today as planned.
John h
Reviewed in the United States on March 10, 2024
The kit clearly states 3 pieces, and only 2 arrived. (The extra fine file was missing.)Another review posted the same issue, w/the extra fine file missing.I contacted the manufacturer, & am waiting for their response, I’ll keep you posted.
Gilberto Morales Rodriguez
Reviewed in Mexico on November 26, 2024
Me gustó este producto.
Monkey Vaper's
Reviewed in France on October 16, 2024
Que dire de plus que DMT rime avec QUALITEEt pour de nombreuse année, un bon investissement !!!
Customer
Reviewed in the United States on April 12, 2023
There are four circular divots on the bottom which I believe are for interlocking onto a bench much like Legos to aid in it not slipping and sliding as well as enabling the person sharpening to sharpen their blade without cutting hands & being able to use the whole stone while lifting it for ease of use.I don't anticipate any problems. I haven't had a chance to use them yet though. Good for my wallet and/or my hiking bag. Also good for a bugout bag.If you guys could have the package factory sealed it would help with discerning the genuine product from the counterfeit knockoffs that are garbage. Do this and increase the cost. Customer assurance that it's 100% genuine is worth an extra 1$.
jetcall
Reviewed in the United States on May 26, 2022
I really like DMT products. I find them generally high quality, fast working, and long lasting. I have several. I have wanted these small stones for a while, for sharpening small items and getting into tight corners.However, I ran into this same problem with two large bench stones I ordered a while ago: they are not quite flat. That is not a problem if you are sharpening a curved edge, but if you are sharpening a straight edge, it is a problem. This seems like a manufacturing problem (though the stones arrived in a simple, unpadded plastic envelope).However, I am returning these, and trying again. With my bench stones, this worked and the second set was dead flat. I'll update if the second set is also slightly convex. Fingers crossed.6/6/22 update:Replacements were a little flatter. Decided to try flattening them myself, with some success.Bottom line: if you need an absolutely flat sharpening surface, look elsewhere. I have very flat DMT bench stones, and use them for sharpening chisels, etc. I plan to use these for hand sharpening where flatness is not crucial, so I am keeping them.
Customer
Reviewed in Sweden on November 11, 2022
Only got 2 of 3 stones as many others. How hard is it to send a complete set?
O. Rettinger
Reviewed in the United States on June 6, 2019
OK, so, first off, like the headline says, these are really small. Yeah, I know the size is listed in the ad, which is why I'm not docking stars for that, I'm just warning you. You'll think, "Oh, that's OK, I can work with that." Trust, me, they're really really small. :DThe trick I've found is to take some non-skid material (I'm using a little square of foam drawer liner stuff) and put the stone on that, near the edge of a flat surface (because they're really thin, too, so you need to be able to hang the handle of the knife off the edge) and use it that way.Once you get the hang of it, they're really effective. They took my work knife from it's beat up "cutting wires, slicing plastic wire loom, scraping gaskets, generally not being very nice to it" former state back to a nice, polished, sharp edge in about ten minutes. But man, unless you know the trick of it, they can be tricky to use.I also dislike the fact that the stone grades aren't marked on the back, but I solved that with a sharpie, so, it's not really worth complaining about too hard, I don't suppose. Overall, they're a great deal if you need a bunch of different grades of stone for not very much money, but... yeah, they take some getting used to.
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