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  1. #1
    Returning Member Tom Dunn's Avatar
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    Sharpening grit question

    About the finest grit I have availabe for sharpening knives, plane irons or whatever is a DMT red hone.
    I'm not sure what the actual grit on the red hone is.
    I need to "move on down" to finer, either diamond stones or whatever type abrasives, but I don't know what the "next step down" is, how do I transit from the red DMT to ??????????

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    Tarhead's Avatar
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    Re: Sharpening grit question

    Tom,
    I uploaded the grit comparison chart here:
    http://www.ncwoodworker.net/forums/d...do=file&id=147
    Not sure what red DMT corelates to. The chart indexes off of micron size so it's easy to compare.

  3. #3
    Returning Member Travis Porter's Avatar
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    Re: Sharpening grit question

    I believe red is around 600 grit. I would go up to 1000 grit next either in a water stone or sandpaper. You can get a green diamond stone that is 1200 grit. Once you get to 1000 or 1200 the next step is to begin polishing say at 4000 grit or better. Just my .02 worth. YMMV

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    Returning Member Nativespec's Avatar
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    Re: Sharpening grit question

    Woodcraft has the Norton stones marked down.

    I use a 200/1000, a 4000 and 8000 and I have a 15000.

    I have a natural Japanese waterstone I bought from Lee Valley that I can sell for $30. It seems to be around 7000.

    The finest grits are man-made waterstones.

    David
    Last edited by SteveColes; 03-18-2008 at 05:22 PM.

  5. #5
    Returning Member Tom Dunn's Avatar
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    Re: Sharpening grit question

    The finest grits are man-made waterstones.
    I would have guessed the white Hard Arkansas stone was. "Guessed" being the key word.....

  6. #6
    Returning Member LeeNC's Avatar
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    Re: Sharpening grit question

    LeeValley has some equivalent grit information for the DMT diamond stones on their website. They also sell the 3M sandpaper in very fine grits for honing/polishing.
    1000 / 15 micron
    2500 / 5 micron
    9000 / .5 micron

    LeeNC

    http://www.dmtsharp.com/dmtdiff/pdfs...oduct_List.pdf

    DMT size /color chart for their stones.
    Last edited by LeeNC; 03-19-2008 at 12:48 PM. Reason: Found DMT in Google

  7. #7
    Returning Member DavidF's Avatar
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    Re: Sharpening grit question

    Quote Originally Posted by Travis Porter View Post
    I believe red is around 600 grit. I would go up to 1000 grit next either in a water stone or sandpaper. You can get a green diamond stone that is 1200 grit. Once you get to 1000 or 1200 the next step is to begin polishing say at 4000 grit or better. Just my .02 worth. YMMV
    I normally go DMT Red - 1000g Norton - 4000g Norton - 2000g wet/dry automotive paper for final polishing.
    David
    "There is no trouble so great or grave that cannot be much diminished by a nice cup of tea" Bernard-Paul Heroux

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