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Overgrind Into The Edge
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Thread: Overgrind Into The Edge

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    Dave Martell's Avatar
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    Overgrind Into The Edge

    I just stumbled upon an old picture that I shot of a brand new knife that came in for sharpening years ago. I began sharpening the knife but a problem quickly arose that got worse and worse. I think this image clearly shows the irreparable condition of a blade overgrind....



  2. #2
    The alleles created by mutation may be beneficial

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    Nice picture, thanks!

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    Dave Martell's Avatar
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    I forgot to mention that this was one of the first knives that I got burnt on trying to fix the overgrind. Yeah there's nothing like buying someone a new knife all because someone else screwed the pooch.

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    Thanks for the image and explanation. My CCK looks like this in a few spots, it is getting annoying.

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    Dave Martell's Avatar
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    Quote Originally Posted by GlassEye View Post
    Thanks for the image and explanation. My CCK looks like this in a few spots, it is getting annoying.

    You might get lucky and see it disappear as you sharpen over time. I say that because CCK's have hammer marks near the edge more so than overgrinds. Still though, an errant hammer blow can show the same irreparable condition too, you never know.

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    Is there any way to check for this? How much does it affect the performance?

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    Hey Dave, in order to "fix" this couldn't you just thin the knife a lot? in the case of the knife being a mono steel? That is however totally changing the knife but its the only thing that comes to mind in order to "fix" it.

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    wqas ging to say i woudl jsut grind it thinner till it was again even

  9. #9
    Canada's Sharpest Lefty Lefty's Avatar
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    Or shorten the blade, from edge to spine, until you're past the overgrind. In the case of the CCK, the blade height would allow this more readily, of course.
    09/06

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  10. #10


    Dave Martell's Avatar
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    I tried the thinning method here because it looked straight forward but as I approached the edge bevel the hole opened up huge and the edge started to disappear thus I got screwed. On the surface that method seems like the way to go but 9 out of 10 times it doesn't work unless you can figure out a way to keep the belt from touching the overground section while doing the thinning to the rest of the knife. I realize that this is hard to accept but when you see it first hand it can't be denied.

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