(Double-Sided Bench Stones)

The DMT Professional DuoSharp Sharpening Bench Stone is shown attached to the DMT - Diamond Sharpening DuoBase DuoSharp Accessory with a Japanese Chisel & Tungsten Router Bit.
DMT - DuoSharp Professional Sharpening Bench Stone Extra-Coarse & Coarse DMT - DuoSharp Professional Sharpening Bench Stone Extra-Coarse & Coarse.
DMT - DuoSharp Professional Sharpening Bench Stone Extra-Coarse & Coarse. DMT - DuoSharp Professional Sharpening Bench Stone Fine & Extra-Fine.
  • DMT Superior Monocrystaline Diamonds, for durability & Strength.
  • Double Sided Sharpening or Two Grit Sizes, One Stone.
  • Precision Flat; Guaranteed to Stay Flat.
  • Will Not Chip, Crack or Groove Like Sharpening Stones.
  • Unique Pattern Speeds Sharpening.
  • Sharpens All Knives and Tools - Even Tungsten & Ceramic.
  • Water Lubricated.
  • Quick and Easy to Use.
  • Very Durable.

DMT - DuoSharp

The DMT - DuoSharp is a multi-patented Diamond Bench Stone. It is a superior two-grit diamond sharpening system for DIY and Commercial Woodworkers, for Chefs as well as Food Service & Processing Professional and Multiple Industrial Applications where flatness counts. It is the choice product for world class sharpening, which incorporates two grit sizes in one large surface area diamond bench stone.

The large surface area of the DMT - DuoSharp Bench stones allows for long and even strokes whilst sharpening your tools. In just 20 seconds on a DMT - DuoSharp stone, you will do the equivalent of about 5 minutes on a standard oilstone.

These bench stones are great for Re-Shaping, Abrading, Lapping, Dressing, Sharpening and Honing a whole host of items and tools such as; Chisels, Moulds & Dies, Chipped Glass, Chef Knives, Carving Tools, Gouges, Scissors, Wood Turning Tools, Awls, Utility Knife, Plane Blade, Skews, Water Stones, Router Bits, Axes, Butcher Knife, Filet Knife, Bushcraft Knives and Shears.

Each DMT DuoSharp comes complete with a Non-Skid Mat.

What Each Grit Size is good for?

  • Extra-Extra Coarse (XX) Silver - 120 microns 120 Grit. The Extra-Extra Coarse is used when serious stock removal, in the fastest possible time, is required. It is ideal for the quick repair of nicked, chipped or otherwise damaged blades or for when a bevel angle needs to be changed. It is great for flattening other types of sharpening stones such as Japanese Water Stones or India Oilstones.
  • Extra-Coarse (X) Black - 60 microns 220 Grit. The Extra-Coarse is used when significant removal of material is needed for damaged tools. It is also great for flattening Water Stones.
  • Coarse (C) Blue - / 45 microns / 325 Grit. The Course is used to quickly restore a cutting edge on a neglected tool or blade. It is also great for flattening Water Stones.
  • Fine (F) Red - 25 microns / 600 grit. The Fine stone will put a keen edge on a regularly maintained tool.
  • Extra-Fine (E) Green – 9 microns / 1200 grit. The Extra-Fine stone is great for polishing and refining a cutting edge after sharpening has been done of a coarser stone.
  • Extra-Extra Fine (EE) Tan – 3 microns / 8000 grit. The Extra-Extra Fine stone provides the finest polished edge of all of the bonded diamond abrasives. This stone is used to create a mirror finish to a cutting edge after sharpening has been done of a coarser stone.

Available Combinations:

Each DMT - DuoSharp Diamond Bench Stones has two grit sizes, which are available in the following combinations:

  1. Extra Coarse (X) Black - 60 microns 220 Grit and Coarse (C) Blue - / 45 microns / 325 Grit.
  2. Fine (F) Red - 25 microns / 600 grit and Extra-Fine (E) Green – 9 microns / 1200 grit.


  • Overall Length: 225 x 67 x 7mm.
  • Diamond Sharpening Area (Each side): 206 x 67mm.
  • Weight: 300 grams.

Optional Extra

See our other listings for the DMT - DuoBase, which allows for more accurate sharpening as it securely holds the DMT - DuoSharp Bench Stones and provides a 2” knuckle clearance, as well as a handle on the underside so that you can safely move the stone over larger work pieces.

The versatile DuoBase stand allows you to use all DuoSharp bench stone models and any other stone type. The DuoBase adds a comfortable height to your stone, allowing for less back strain. It allows a 2 inch (50mm) knuckle clearance and features a handle on the underside for hand-held sharpening of tools such as Axes. The rubber feet allow the DuoBase to securely stabilise the sharpening stone to any work surface, permitting you to concentrate on sharpening your tools with accuracy.

Simply the Best

DMT is the leading manufacturer of superior quality Monocrystaline diamond sharpening equipment throughout the world. Renowned by professionals for the quality of diamonds used in all of their products, DMT is simply the only real choice a professional should make.

Monocrystaline Vs. Polycrystalline Diamonds

The industrial grade diamonds used in all DMT products are diamonds that are known as ‘Monocrystaline’ diamonds, because this type of diamond has a single crystalline structure. Monocrystaline diamonds are manufactured without flaws or defects, into a single uniformed cohesive diamond, which will not shatter upon use. DMT Monocrystaline diamonds are simply the best diamonds for the job; they remain whole and stable throughout their entire working life, and should therefore last even the most demanding professional many, many years of trusted and reliable service.

A word of Caution! Low quality Polycrystalline diamonds are used in cheaper versions of diamond stones. These Polycrystalline diamonds are inherently flawed, causing them to quickly fragment and shatter upon use, this fragmentation effectively, changes the nature of the diamond stones grit size value, reducing the overall grinding speed and efficiency. What is worse than this is that with little continued use these cheap Polycrystalline diamonds continue to shatter until they have simply disintegrated away to nothing. In the world of diamond sharpening, you really do only get what you pay for. Polycrystalline diamonds are simply not fit for the job ... so, when only the very best will do, opt for DMT MonocCrystaline Sharpening Equipment.

PLEASE NOTE: The Tools and DuoBase shown in the above photos are not included in this sale.

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