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    sharpening wear resistant steel

    I'm curious what the most wear resistant steel you've sharpened and how you managed to get the best edge on it (stones, strops, compounds, techniques, etc). I just spent a lot of time this morning trying to get DT-swr as sharp as everything else and although the edge is nice and aggressive and cuts anything in front of it, I just can't seem to squeeze that last bit of sharpeness out of it.

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    Senior Member K-Fed's Avatar
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    The most wear resistant steel that I've encountered was the SRS-15 in the akifusa that I once had and found that I had to spend a bit more time on the medium stones before moving on the the higher grits and also spending a little more time stropping with a diamond loaded strop. I think simply put if it takes longer to abrade to me just = more strokes on each step to achieve the same results. I could be wrong though. Has DT commented on the steel's properties? i.e. grain size, carbide size so on and so forth?

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    Well, I was putting away my strops since they were all over the kitchen an it occurred to me that I hadn't tried anything under 0.5 microns so I pulled out my original Dave strop loaded with the 0.25 mcn polydiamond (haven't used it it at least 6 mo, maybe a year) and gave it a few passes. It's super sharp!!

    Now, I just need to find out how long this edge is gonna last.

    @K-Fed: I tried sharpening it several times using different stones/plates/strops, varying the amount of time spent at each stage. It definitely takes longer to get places with it but it gets there. It was just that last bit. Usually, stropping on leather w/ 1 mcn anything yields an edge that will pass any of the typical sharpness tests but on this one, it wasn't getting there before my patience ran out, lol. I don't know that Hoss has said much other than it is fine grained (I don't know how fine.) and very wear resistant.

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    Senior Member K-Fed's Avatar
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    Sweet! Looking forward to a review. pics?

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    Quote Originally Posted by K-Fed View Post
    Sweet! Looking forward to a review. pics?
    Here's one. This is the knife I hand-picked for Chuck at the LV show. I've been bugging him about selling it back to me and he finally caved in favor of a carbon steel DT. The handle has darkened quite a bit. I'll post more a bit later. The other knife is my DT-ITK 270 in AEB-L.

    Click image for larger version

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    Btw, best stone progression so far is: Gesshin 400, Sigma Select II 1.2k, insert finishing stone (nothing was particularly good), 1 mcn diamond on leather, 0.25 mcn on leather. I'll have to take this knife to JKI sometime to try the Gesshin 2k/4k on this. I have a feeling those will be winners here.

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    Learning this mostly from yanagiba sharpening, I've found that "double polishing" a knife can often be the trick to cleaning up a tough edge. I will go to the furthermost level available to me with stones & strops and then drop back to a mid-range to fine stone that doesn't easily create a burr and then work my way back up to the highest level again. I almost always get a much sharper (and longer lasting) edge doing this on a knife that is giving me a hard time.

    If it's a gyuto I'm working on it might pay to go one step further and drop back (for just a pass or two) to that toothy 3-5k stone and then strop on say 1mic diamond/leather so as to achieve that better all around gyuto edge. It's important to note that you don't want to create a burr here - just sort of rough up the edge a bit.

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    Dave Martell's Avatar
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    My most wear resistant experiences come from....

    1. S30V

    2. Aritsugu A-type mystery steel

    3. Carter's damascus


    Those three always stay in my mind as ones that make me work harder.

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    The Marko prototype i had in 52100 was very wear resistant. My gesshin 400 stone barely touched that steel took a while to raise a very small burr. Although once i got it sharp it held and edge like no other. Although in the long run i think mild wear resistants is good, that way its not too hard to touch up but still holds an edge for a decent period of time.

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    Cpm Rex 121, barely any of my stones will touch it. Can't get a screaming edge on it but it stays plenty sharp for ages

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    Quote Originally Posted by jgraeff View Post
    The Marko prototype i had in 52100 was very wear resistant. My gesshin 400 stone barely touched that steel took a while to raise a very small burr...
    That's curious. I sharpened various flavors of 52100 from Marko and found the G400 easily cut all of them, including the "supercharged" versions. I did have difficulty getting a couple of them screaming sharp though.

    @TB: What stones do touch that steel?

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