DMT Diamond Stones (70mm)

(6 reviews) Write a Review

Product Overview

  • These metal and plastic laminate 'stones' have industrial diamonds bonded to them. 
  • DMT diamond stones last a long time if kept clean (we use an old toothbrush with wax remover or Ronson lighter fluid for this)
  • Use with light pressure (a heavy hand can prematurely break diamonds loose from the stone). 
  • We also use them wet (dip 'em in a cup of water or use edge polishing solution) to help keep debris from clogging the diamonds.
  • A handy 2.75" for multi edge tools like the MTK 3100.
  • Also available in 4" inch
  • Also sold in sets
  • BLACK 
  • Extra Coarse  (220 grit) 
  • Best for repairing rock damage on steel edges when they've been 'work-hardened' by impact and look glazed and/or very ragged
  • Also good for re-sharpening carbide tips on ski skating poles
  • BLUE 
  • Coarse (325 grit)
  • Use the medium blue model  for deburring side edges after filing or beveling.
  • RED
  • Fine (600 grit)
  • for finer deburring and edge polishing.
  • Extra fine  (1200 grit)
  • The extra-fine green stone for even smoother finishes.


(6 reviews) Write a Review

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  • 4
    DMT 2.75 inch diamond stones

    Posted by George Farwell on Oct 27, 2019

    Great for deburring and polishing edges.They are thin enough to fit in edge guides, i.e. Swix base angle guide. A little fragile though - use lube and LIGHT pressure !

  • 5
    DMT 2.75 inch diamond stones

    Posted by Ian Johnston on Oct 01, 2019

    I am now on my second set of stones .I got more than 20 years out of the first lot. In conjunction with the sharpening device I am able to keep the edges of my snowboard sharp. I can't imagine anything better.

  • 4

    Posted by wally on Mar 09, 2017

    Works very well with FK 3100 bevel tool.

  • 5
    Works great!!!

    Posted by egils vigants on Jan 07, 2016

    I use these in the hand held tool and they work great...just replace as necessary from wear...fantastic product!

  • 4
    good set of diamond stones

    Posted by Joe W on May 13, 2015

    these diamond stones work well with the Fk Multi Edge Tuner, used after the mill file if the edge is damaged; coarse-medium-fine or medium-fine if sharpening dull edges.

  • 5
    Essential tools

    Posted by Eric on Feb 21, 2015

    Essential tools to get razor sharp edges. Files (or a shop grinder) do the rough work, but these really polish them up. Great product will last for years.