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DMT Diamond Stone, 70 mm

DMT Diamond Stone, 70 mm


$7.99 & Free shipping over $50
Retail: $13.98 (You save $5.99)
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DMT Diamond Stone, 70 mm x 25mm.


    • GREY (XX-Coarse)= offers metal removal in the shortest time - best for repairing edge damage (120 grit);
    • BLACK (X-Coarse)= offers best cutting action (220 grit);
    • BLUE (Coarse)= for routine edge maintenance and sharpening (325);
    • RED (Fine)= for deburring and edge polishing (600);
    • GREEN (X-fine)= for ultra smooth edge polishing (1200)
  • DMT stones are made in the USA.
  • Use wet.
  • Use these 70-mm files for the multi-tuner or pocket tool sold here; specific angle edge tools are best used with longer (100+ mm) stones.
  • Sold in bulk non-retail packaging.
  • DMT diamond offers an economical product that can manage the extreme hardness of ski and snowboard edges. They quickly remove even the super hard edge burrs that result from rock damage and man-made snow. The unique interrupted surface of recessed polka dots collects and removes the metal filings during the polishing process.

For optimum performance:

  • The diamond files should be used lubricated, spraying on a solution of 50% water and 50% denatured alcohol. In emergency, on the ski slope, the snow could be enough to keep them lubricated.
  • Create the edge with a file, then use the various grits in sequence for obtaining a mirror finish (220-325-600-1200). Three or four passes of each grit, without exerting pressure, are enough to obtain a perfect result.
  • After use, clean the stone with the water-alcohol solution using a small bronze or nylon brush.
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Product Use


1 Review

  • 4
    DMT Diamond Stone, 70mm

    Posted by Kevin K on Oct 21st 2019

    Bought our first set of stones that came with the Multi Tuner last January. We ski 2-3 times a week at Whiteface Mountain in Lake Placid on machine made snow for the most part. A weekly touch-up using the blue-green stones keeps the edges razor sharp. Skis hold well on most conditions short of skating rink ice. Follow directions for use, be patient and I think you'll be pleased.

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