Sign Up Today and Get a Special 10% Off Coupon

DMT Dia-Sharp, 8" x 3" Bench Stone, Extra-coarse

Item #411913 DMT
Qty.   or Add to Wish List


(1 reviews)

Read Reviews | Write a Review

Product Information:

Extra -Coarse is black, 60 micron/ 220 mesh

Quickly hone a razor-like edge with the uninterrupted diamond sharpening surface of this DMT 8" x 3" extra-coarse dia-sharp stone. This continuous diamond surface stone provides a cutting edge performance and is recognized for superior quality. Sharpening with diamonds is fast and easy. No oil is needed. You can sharpen dry or with water. Extra-coarse grit is perfect when significant removal of material is needed for damaged tools. It is also great for water stone flattening.

  • 8" x 3" extra-coarse stone
  • Continuous diamond surface
  • Water used as the lubricating wash, no oil needed
  • Great for waterstone flattening
  • DMT monocrystalline technology
  • California Residents: Click here for Proposition 65 information.


  • Sharpening Stones Comparison - This chart compares the advantages and disadvantages of different sharpening stone materials.
  • Diamond Sharpener Selection Chart - This chart from DMT shows how to match the item you need sharpened to the DMT Model Sharpener & proper grit.
  • DMT Grit Size Chart - DMT Grit Size Chart


    by PowerReviews

    (based on 1 reviews)


    of respondents would recommend this to a friend.

    Displaying reviews 1 - 1

    Back to top



    Heavy. Flat. Extra-Coarse.

    By  MicCheckOne

    from Long Beach, CA

    About Me Casual Do-It-Yourselfer


    • Powerful
    • Sturdy


    • Difficult to pick up

    Best Uses

    • Flattening plane soles
    • Flattening whetstones
    • Grinding

    Comments about DMT Dia-Sharp, 8" x 3" Bench Stone, Extra-coarse :

    I bought this Dia-Sharp Extra-Coarse Diamond Bench Stone primarily for use as a lapping stone, to level and refresh the surfaces of my Arkansas whetstones -- a task at which it excels. But when I lucked upon two vintage Stanley bench planes at a local antique shop, this diamond stone was quickly put to the test. The plane soles were corroded and uneven, so I pushed them over the diamond stone for quick removal of old steel, following up with finer grits of sandpaper. Then I had the plane blades to contend with. The previous owner obviously wasn't big on sharpening. The blades were dull and badly chipped. I don't own a bench grinder, but I knew that with an hour and some elbow grease, I could grind a fresh edge on those blades using the Dia-Sharp stone. Sure enough, after an hour of plowing those blades against the diamond stone, I was left with two straight-edged blades, ready for sharpening. I give the Dia-Sharp line high marks for versatility and durability. If the price tag makes you think twice, just remember that you're investing in a long-lasting tool.

    Displaying reviews 1 - 1

    Back to top