---
product_id: 2118955
title: "Diamond Machining Technology (DMT) 8-in. DuoSharp Plus Bench Stone Whetstone Extra Fine/Fine Grit Diamond Sharpening Stone with Base (WM8EF-WB)"
brand: "dmt (diamond machining technology)"
price: "€ 287.03"
currency: EUR
in_stock: true
reviews_count: 13
category: "Dmt (Diamond Machining Technology)"
url: https://www.desertcart.be/products/2118955-diamond-machining-technology-dmt-8-in-duosharp-plus-bench-stone
store_origin: BE
region: Belgium
---

# Micronized monocrystalline diamond surface for ultra-fast sharpening Dual grit system (Extra Fine 1200 mesh & Fine 600 mesh) for precision edge refinement Durable 8-inch bench stone with stable base for consistent, even sharpening Diamond Machining Technology (DMT) 8-in. DuoSharp Plus Bench Stone Whetstone Extra Fine/Fine Grit Diamond Sharpening Stone with Base (WM8EF-WB)

**Brand:** dmt (diamond machining technology)
**Price:** € 287.03
**Availability:** ✅ In Stock

## Summary

> 🔪 Edge sharper than your hustle — sharpen like a pro, every time.

## Quick Answers

- **What is this?** Diamond Machining Technology (DMT) 8-in. DuoSharp Plus Bench Stone Whetstone Extra Fine/Fine Grit Diamond Sharpening Stone with Base (WM8EF-WB) by dmt (diamond machining technology)
- **How much does it cost?** € 287.03 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/2118955-diamond-machining-technology-dmt-8-in-duosharp-plus-bench-stone)

## Best For

- dmt (diamond machining technology) enthusiasts

## Why This Product

- Trusted dmt (diamond machining technology) brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Dual-Sided Precision:** Flip between fine (25 micron) and extra-fine (9 micron) grits to hone and polish blades to razor sharp perfection.
- • **Versatile Edge Master:** Engineered for knives, scissors, and small tools—your all-in-one sharpening solution for professional-grade performance.
- • **Sharpen in Minutes, Not Hours:** Micronized diamond tech accelerates edge restoration without messy oils—sharpen dry or wet with ease.
- • **Built to Last, Made in the USA:** Trusted by pros for years of reliable, consistent sharpening with premium American craftsmanship.
- • **Effortless Control, Maximum Blade Life:** Light pressure sharpening preserves blade steel, doubling or tripling your tool’s lifespan—sharpen smarter, not harder.

## Overview

The DMT 8-in. DuoSharp Plus Bench Stone features a patented micronized monocrystalline diamond surface with dual grit sides (extra-fine 1200 mesh and fine 600 mesh) for fast, precise sharpening without oils. Designed with a stable base and a large surface area, it accommodates knives, scissors, and small tools, delivering professional-grade edges while preserving blade life. Made in the USA, this durable sharpening stone is favored by chefs, woodworkers, and installers for consistent, effortless performance.

## Description

Product Description The innovative, multi-patented DuoSharp Bench Stone is a precision flat, two-surfaced diamond sharpening plate guaranteed to provide consistent, even sharpening every time. Designed with a larger, wider diamond surface for sharpening a variety of edges, this diamond plate is an excellent counter and bench sharpener. This honing stone also comes with a bench stone base accessory and is equipped with two separate grits. On one side of the honing tool, there is extra-fine diamond (9 micron /1200 mesh) to polish and refine a razor edge after sharpening with a coarser diamond. On the opposite side of our blade sharpener, there is a fine diamond (25 micron / 600 mesh) for initially honing the razor sharp edge. Thanks to the micronized monocrystalline diamond surface, you can sharpen edges much faster than conventional stones can -- it can even be used as a lawn mower blade sharpener. No messy oils are needed either -- sharpen dry or with water. Our durable sharpening system will provide years of consistent performance and reliable service. Professionals rely on the superior quality and versatility of USA-made DMT products for proper tool maintenance. From the Manufacturer Innovative, precision flat two grit diamond sharpener featuring both interrupted and continuous diamond sharpening. 8-Inch duosharpplus bench stone with bench stone base provides excellent counter and bench sharpening, features two sides of 6-Inch by 2-5/8-Inch interrupted diamond surface sharpening-perfect for knives, scissors, tools plus the benefits of a continuous zone for small and pointed tools. Extra-fine diamond (9 micron/1200 mesh) to polish and refine a razor edge after sharpening with a coarser diamond. Fine diamond (25 micron/600 mesh) for a razor sharp edge. 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.

Review: Best sharpening system for the effort and cost - After buying several expensive Japanese Kitchen knives, for their maintenance I purchased this unit, plus a Coarse grit plate from DMT and an 2*Extra Fine finishing plate. It takes a bit of practice to use these properly, but once you get a system down, they are probably the least expensive or messy, most reliable system for sharpening high quality blades. There are generally four types of commercially available systems to sharpen your kitchen knives (a job that you will be doing once a week). Here is my (very) subjective comparison of systems: 1. Diamond Systems (e.g., DMT): Mess & Effort (Low), Sharpening Quality (Very High), Skill required (Moderate) 2. Arkansas stones: Mess & Effort (Moderate), Sharpening Quality (High, not good for steels >60HRC), Skill required (Moderate) 3. Japanese Waterstones: Mess & Effort (Very High), Sharpening Quality (The Best), Skill required (High) 4. Ceramic sharpening systems: Mess & Effort (Low), Sharpening Quality (High, touch up only), Skill required (Low) I use dish detergent and water on the DMT plates to sharpen, having found that better than other solutions. It keeps everything clean as well. The DMT plates sharpen aggressively, so compared to the other systems, you will sharpen faster and with less effort. I have seen several complaints about DMT plates not being perfectly flat, but I think these are bogus. I have considerable experience inspecting optical flats (these usually need to be flatter than 1/4 wave, which is quite flat) and used the same techniques to eyeball my plates. The extra fine plate is easy to inspect, since rainbow refractions from the diamonds show off any ripples; additionally, the regular pattern of pits on the plates highlights any unevenness. My plates are very flat. But interestingly enough, not one of my knives (not even my brand new Miyabi) is perfectly flat; certainly not as flat as the plate. Even if there were ripples, I couldn't see them being more significant than you would get on a worn waterstone or Arkansas stone. Maybe there is the occasional bad plate; just send it back and get a new one. The DMT system is in my opinion a much less error prone approach to sharpening than other options. Overall the cost is low for all the DMT plates you need: perhaps ~ $200. Add a ceramic steel, and/or strop pad for the final edge, and you will have a very effective system for sharpening your knives better than you received them from the factory.
Review: Diamond Bench Sharpener - Highly recommended - I own a lot of expensive knives: Kitchen and hunting. Knives that were razor sharp when new and over time they were anything but. I have tried Arkansas stones, ceramic rods, and many other sharpening systems and tools. Nothing is a good as the DMT bench. One side is red and one is green. The red takes a not sharp (but not abused) blade and hones it first. Maybe 5 to 6 passes per side. Then you move to the green to take the sharpening to a new level with 3-5 passes per side. Almost like new. A dull knife takes maybe 3 minutes to sharpen. An "almost" sharp refresh, using only the green side, takes about a minute. I can do the whole kitchen rack of 15 knives (refresh only) in 30 minutes. Success for me relied on two things: the correct angle and the correct pressure per pass. I used the recommended "lay two quarters on top of one another" in the manual to get the feel of the angle. Once I got the feel I don't use them anymore. Initially I was putting about the amount of force I used to use with sharpening stones. It was too much. Now I used just enough pressure to keep the knife on the surface (either red or green). And by that I mean almost no pressure. If you have a kitchen scale I find about 1-2 oz of pressure works best for me. Any more than that and I just hone off good steel. It seems I use less pressure each time and the diamond surface works perfectly. I expect to get even better and the knives even sharper. This sharpening system is definitely worth the price. Highly recommended. Use it for two weeks and relegate your old systems to your favorite charitable donation site. Note: I also use the DMT 12" Diamond Steel between sharpenings. (see my separate review). I use it while paring and carving AND to sharpen my serated bread knife. I can now slice warm bread again. Update 2/3/13 Tried the fine/extra fine stones on three no longer used knives. I suspect we stopped using them because they were so dull. The fine/extra fine really couldn't set a new edge (they were too far gone). So I picked up up a second stone (Extra Course (black) / Course (blue)to use with my original base. I went to work on the knives starting with the extra coarse to see if I could resurrect my lost causes. Six passes on each side first with the black and then six passes per side with the blue and a new edge was set (1 knife needed 4 more each side with the black). Now all three are in the every-other-week rotation for fine tuning edges. Maybe I could have worked at using the fine/extra fine (aka red and green) but I decided to do it right. Plus I intend to begin working on my shop tools (planes, chisels, etc) and these will get work there. Granted these are not inexpensive tools. But, both bench stones and the base set me back roughly the cost of just one of my knives: a 10" Global chef.

## Features

- Fast & Easy: A micronized monocrystalline diamond surface sharpens edges faster and easier than conventional sharpening stones; No messy oils are needed either -- sharpen dry or with water
- Made in the USA or Imported
- Diamond Wet Stone Sharpening Kit: An excellent counter and bench sharpener, this flat, two-surfaced diamond stone comes with a base accessory and features a large, wide surface for consistent, even sharpening
- Dual Diamond Surface: Extra-fine diamond (9 micron /1200 mesh) can be used to polish and refine edges after sharpening; Fine diamond (25 micron / 600 mesh) initially hones edges
- Versatile: Engineered to accommodate a range of edges from knives and scissors to small pointed tools, this diamond stone sharpener is guaranteed to provide cutting-edge performance
- Made In The USA: Preferred by professionals for their superior quality and versatility, our durable diamond sharpening stones are built to provide years of consistent performance and reliable service

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000H6L6FA |
| Best Sellers Rank | #147,002 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #259 in Sharpening Stones |
| Brand | DMT (Diamond Machining Technology) |
| Brand Name | DMT (Diamond Machining Technology) |
| Customer Reviews | 4.6 out of 5 stars 764 Reviews |
| Global Trade Identification Number | 00017042003708 |
| Grit Type | Extra Fine, Fine |
| Included Components | Duo Sharp Plus |
| Item Dimensions L x W x H | 13.25"L x 13.25"W x 11.5"H |
| Item Type Name | fixed blade,hunting knife,outdoor,camping |
| Item Weight | 516 Grams |
| Manufacturer | DMT |
| Manufacturer Part Number | DMTWM8EFWB-BRK |
| Manufacturer Warranty Description | Manufacturer Warranty |
| Material | Micronized Monocrystalline Diamond |
| Material Type | Micronized Monocrystalline Diamond |
| Model Number | WM8EF-WB |
| Number of Items | 1 |
| Product Dimensions | 13.25"L x 13.25"W x 11.5"H |
| UPC | 733353672869 971498023102 017042003708 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** DMT (Diamond Machining Technology)
- **Global Trade Identification Number:** 00017042003708
- **Grit Type:** Extra Fine, Fine
- **Item Weight:** 516 Grams
- **Manufacturer:** DMT
- **Material:** Micronized Monocrystalline Diamond
- **Number of Items:** 1
- **Product Dimensions:** 13.25"L x 13.25"W x 11.5"H
- **UPC:** 733353672869 971498023102 017042003708

## Images

![Diamond Machining Technology (DMT) 8-in. DuoSharp Plus Bench Stone Whetstone Extra Fine/Fine Grit Diamond Sharpening Stone with Base (WM8EF-WB) - Image 1](https://m.media-amazon.com/images/I/61sSdRUkVFL.jpg)
![Diamond Machining Technology (DMT) 8-in. DuoSharp Plus Bench Stone Whetstone Extra Fine/Fine Grit Diamond Sharpening Stone with Base (WM8EF-WB) - Image 2](https://m.media-amazon.com/images/I/31EgoRh-7bL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Best sharpening system for the effort and cost
*by J***D on April 26, 2013*

After buying several expensive Japanese Kitchen knives, for their maintenance I purchased this unit, plus a Coarse grit plate from DMT and an 2*Extra Fine finishing plate. It takes a bit of practice to use these properly, but once you get a system down, they are probably the least expensive or messy, most reliable system for sharpening high quality blades. There are generally four types of commercially available systems to sharpen your kitchen knives (a job that you will be doing once a week). Here is my (very) subjective comparison of systems: 1. Diamond Systems (e.g., DMT): Mess & Effort (Low), Sharpening Quality (Very High), Skill required (Moderate) 2. Arkansas stones: Mess & Effort (Moderate), Sharpening Quality (High, not good for steels >60HRC), Skill required (Moderate) 3. Japanese Waterstones: Mess & Effort (Very High), Sharpening Quality (The Best), Skill required (High) 4. Ceramic sharpening systems: Mess & Effort (Low), Sharpening Quality (High, touch up only), Skill required (Low) I use dish detergent and water on the DMT plates to sharpen, having found that better than other solutions. It keeps everything clean as well. The DMT plates sharpen aggressively, so compared to the other systems, you will sharpen faster and with less effort. I have seen several complaints about DMT plates not being perfectly flat, but I think these are bogus. I have considerable experience inspecting optical flats (these usually need to be flatter than 1/4 wave, which is quite flat) and used the same techniques to eyeball my plates. The extra fine plate is easy to inspect, since rainbow refractions from the diamonds show off any ripples; additionally, the regular pattern of pits on the plates highlights any unevenness. My plates are very flat. But interestingly enough, not one of my knives (not even my brand new Miyabi) is perfectly flat; certainly not as flat as the plate. Even if there were ripples, I couldn't see them being more significant than you would get on a worn waterstone or Arkansas stone. Maybe there is the occasional bad plate; just send it back and get a new one. The DMT system is in my opinion a much less error prone approach to sharpening than other options. Overall the cost is low for all the DMT plates you need: perhaps ~ $200. Add a ceramic steel, and/or strop pad for the final edge, and you will have a very effective system for sharpening your knives better than you received them from the factory.

### ⭐⭐⭐⭐⭐ Diamond Bench Sharpener - Highly recommended
*by K***M on December 10, 2012*

I own a lot of expensive knives: Kitchen and hunting. Knives that were razor sharp when new and over time they were anything but. I have tried Arkansas stones, ceramic rods, and many other sharpening systems and tools. Nothing is a good as the DMT bench. One side is red and one is green. The red takes a not sharp (but not abused) blade and hones it first. Maybe 5 to 6 passes per side. Then you move to the green to take the sharpening to a new level with 3-5 passes per side. Almost like new. A dull knife takes maybe 3 minutes to sharpen. An "almost" sharp refresh, using only the green side, takes about a minute. I can do the whole kitchen rack of 15 knives (refresh only) in 30 minutes. Success for me relied on two things: the correct angle and the correct pressure per pass. I used the recommended "lay two quarters on top of one another" in the manual to get the feel of the angle. Once I got the feel I don't use them anymore. Initially I was putting about the amount of force I used to use with sharpening stones. It was too much. Now I used just enough pressure to keep the knife on the surface (either red or green). And by that I mean almost no pressure. If you have a kitchen scale I find about 1-2 oz of pressure works best for me. Any more than that and I just hone off good steel. It seems I use less pressure each time and the diamond surface works perfectly. I expect to get even better and the knives even sharper. This sharpening system is definitely worth the price. Highly recommended. Use it for two weeks and relegate your old systems to your favorite charitable donation site. Note: I also use the DMT 12" Diamond Steel between sharpenings. (see my separate review). I use it while paring and carving AND to sharpen my serated bread knife. I can now slice warm bread again. Update 2/3/13 Tried the fine/extra fine stones on three no longer used knives. I suspect we stopped using them because they were so dull. The fine/extra fine really couldn't set a new edge (they were too far gone). So I picked up up a second stone (Extra Course (black) / Course (blue)to use with my original base. I went to work on the knives starting with the extra coarse to see if I could resurrect my lost causes. Six passes on each side first with the black and then six passes per side with the blue and a new edge was set (1 knife needed 4 more each side with the black). Now all three are in the every-other-week rotation for fine tuning edges. Maybe I could have worked at using the fine/extra fine (aka red and green) but I decided to do it right. Plus I intend to begin working on my shop tools (planes, chisels, etc) and these will get work there. Granted these are not inexpensive tools. But, both bench stones and the base set me back roughly the cost of just one of my knives: a 10" Global chef.

### ⭐⭐⭐⭐⭐ Excellent 600-/1200-grit sharpener, great for large knives!
*by C***R on February 11, 2014*

The DMT WM8EF-WB 8-Inch DuoSharp Plus Bench Stone (Extra Fine/Fine With Base) is an outstanding value at $55. While some might find that price to be high, keep in mind that you're getting a large 3" x 8" double-sided diamond sharpener (one side is fine 600-grit for all around sharpening, the other is extra fine 1200-grit for getting your blades to a razor sharp edge). Unlike natural stones, the polymer base also won't deform. It stays perfectly flat over time. And the sharpening goes MUCH faster. 10 swipes on this stone is roughly equivalent to about 50 swipes on an Arkansas stone. Not only do you save time and energy, but it's much easier to maintain a very consistent blade angle (crucial to effective sharpening) for 10 strokes than it is for 50. This model includes the robust plastic base as well. The stone snaps into the base very snugly (no looseness) and the wide feet provide for a very stable platform while sharpening. For added security, you can fasten the base to a workbench or other large surface. However, I found the base stable enough on its own to be perfectly serviceable on a kitchen countertop. It would be nice if the base had grippy rubberized feet to reduce slippage on smooth surfaces for those like me who don't want to permanently affix it to a workbench, but if you brace one end of the base against something (such as the edge of the sink or the stove) and draw the knife in that direction, it works fine and won't slip. I've used this stone to sharpen everything from my smallest Swiss Army blade (2" stainless) up to my Ka-Bar/Becker BK7 blade (7" 1095 cro-van steel). Sharpening a large 7" knife on this stone is very easy. The general rule of thumb is that your stone should be at least as long as your blade, so if you have knife blades longer than 8", you may want to spend more for the 10-inch version of this stone (which at the time of this review, is inexplicably listed at nearly three times the price!?). For my needs, the 8 inch stone is plenty long. There's nothing to complain about with regard to the quality and functionality of this product. It's first rate and will do a very good job sharpening your knives, assuming you take time to learn the proper technique. Throw in an old belt with sharpening compound for stropping, and you will have the tools to put a scary sharp edge on most any knife. The only shortcoming I notice with this product is the ambiguity of the stone in determining which side is fine (600-grit) and which extra fine (1200-grit). As it turns out, it is color coded by a small circle at one end of the stone, which then can be cross-compared with a list on the packaging to determine the grit. But it's strange to me that they didn't just stamp "600-grit" and "1200-grit" on the respective sides instead of the color-coding--which would be clearer and more convenient. I simply wrote the proper grit (with an appropriately pointed arrow) on either side of the stone in permanent black ink. Technically, you can tell by feel as well. Regardless, some people are sure to be inexperienced and inadvertently use the extra fine side to initially sharpen a very dull blade, and then will get dismayed by the slowness. The fine (600-grit) side will restore a fairly dull blade very quickly, however, and is probably the best "general purpose" grit for knives. For quick blade touch ups, you could skip using the extra fine side altogether unless you really need to get your blades shaving sharp or just enjoy bringing the edge up to a more polished look. All in all, this is a great product and well worth the price. Sure, natural stone sets with comparable grits can be had for half as much money, but they require more effort and care, and thus, introduce more room for error. This is your best bet for faster, superb sharpening results. If idiot-proof convenience is your priority, you may prefer a pull-through sharpener. However, keep in mind that those kind will not put nearly as nice or as long-lasting of an edge on your knives. They are convenient thought. In my opinion, a diamond stone like this one is the best way to do it right. [UPDATE 4-1-2014: I've been using this sharpener a lot for a month and a half now and it is the best diamond sharpener I've ever owned. It works very quickly on every blade and steel I've tried, and can take a blade from very dull to very sharp in only a few dozen strokes. The trick is to keep the sharpening angle consistent for each stroke (I sharpen at 21 degrees for wilderness knives, and about 17 degrees for kitchen knives), and apply the right amount of pressure as you stroke. Once you get a feel for it, this sharpener works superbly.]

## Frequently Bought Together

- Diamond Machining Technology (DMT) 8-in. DuoSharp Plus Bench Stone Whetstone Extra Fine/Fine Grit Diamond Sharpening Stone with Base (WM8EF-WB)
- Diamond Machining Technology (DMT) WM8CX DuoSharp Double-Sided Diamond Sharpening Stone Bench, Coarse/Extra-Coarse, 8 Inch
- BeaverCraft Stropping Leather Strop for Knife Sharpening Strop LS2P1 - Knife Stropping Kit 3 x 8 IN - Knives Sharpener with Honing Strop Polishing Compound Set - Double Sided

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*Product available on Desertcart Belgium*
*Store origin: BE*
*Last updated: 2026-05-27*