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Preferred blade grinds, hollow, flat, compound, etc.

Discussion in 'General Knife Discussion' started by Workingsloth777, May 15, 2019.

  1. Workingsloth777

    Workingsloth777 Gold Member Gold Member

    Mar 10, 2019
    I have just noticed recently that my Buck 110 slim pro is getting more pocket time than a lot of my other (nicer) knives. So I asked myself why?
    Is it the nice micarta handle? No
    The Carry ability? No
    The Paul Bos heat treated s30v blade? No, but close
    The very nice slicey hollow grind? Yes!

    So I'd love to hear what your favorite blade grind is and why?
    Obviously mine is the hollow grind, I don't use my blades for anything that would be considered "hard" use so being very thin behind the edge is more of an advantage for me while possibly being a disadvantage for someone who needs that extra durability.
    I also love how it keeps that same thickness behind the edge a lot longer through the years of sharpening than for instance a flat grind that slowly gets thicker.

    I might also add that I like how a hollow grind plays with the light reflecting from it.

    sliceofaloha and AF like this.
  2. 4mer_FMF

    4mer_FMF Basic Member Basic Member

    Jun 9, 2016
    Ditto with the hollow grind for most of the same reasons.
  3. miso2

    miso2 Gold Member Gold Member

    Nov 19, 2014
    I love good hollow grind blades for the same reasons, too.

  4. Therom


    Nov 13, 2013
    Since I got into CRK I have to admit that hollow grind is my preferred but a full flat grind is also fine for me
  5. TRfromMT

    TRfromMT Gold Member Gold Member

    Jan 4, 2016
    I do prefer a hollow grind (my Gayle Bradley 2 comes to mind as my favorite). There is something about the feel of the CRK hollow grind between your fingertips. Somehow when I'm sharpening mine I find there is something very tactile about that grind right behind the edge. A thin, hollow grind is very suitable for my needs, and I seem to keep the tip more in tact than I have on say a PM2.

    The FFG on my Shiro is also a thing of beauty.

    Conversely, I don't like convex grinds in the slightest. They remind me of something amature , something from high school shop class.
  6. b00n

    b00n Gold Member Gold Member

    Dec 15, 2016
    Most of my knives have flat ground variations, but I do like hollow grinds quite a bit. A flat/hollow compound grind could be interesting in a tanto style like the 0055.
  7. Sharp & Fiery

    Sharp & Fiery Always Embellish Platinum Member

    May 14, 2012
    I will have to echo this statement. :)
  8. AntDog

    AntDog Gold Member Gold Member

    Apr 3, 2001
    Full flat. Doesn’t get bound up like hollow ground blades do while chopping.
    Pomsbz likes this.
  9. Dr Heelhook

    Dr Heelhook Basic Member Basic Member

    Jul 24, 2007
    Full flat grind for general purpose, flat or convex single bevel for cutting wood.
  10. Horsewright

    Horsewright KnifeMaker / Craftsman / Service Provider Knifemaker / Craftsman / Service Provider

    Oct 4, 2011
    As a maker I do both hollow grinds and full flat grinds.



    Full flat grind:



    Hollow ground:



    Either can be slicey as heck if ground properly:


    I would guesstimate I sell 2-3 to 1 of full flat grinds to hollow grinds. I until recently have always personally carried a full flat grind. The last three years I carried a hollow ground blade, kinda a prototype deal. I really liked that little camel bone knife in the first pic, bottom row second from the left. Since it wasn't sold yet I kept it. Ya can do that if ya make em and they ain't sold yet. Really liking it, so back to full flat grind as an EDC.


  11. marrenmiller

    marrenmiller Basic Member Basic Member

    Apr 6, 2017
    I prefer a very high hollow grind with a thin edge and reasonably thin stock. I also like FFGs.

    I've never believed the theory that hollow grinds bind appreciably worse at the grind shoulder than a comparable flat grind, as the difference in inclusive angle at the shoulder is a few degrees and you make up for it by having substantially less material in the way of the cut medium throughout the rest of the blade.
  12. lonestar1979


    Mar 2, 2014
    High deep hollow grind is my favourite too,easy to sharpen and cut like crazy,most materials.
    Banter 247 likes this.
  13. AntDog

    AntDog Gold Member Gold Member

    Apr 3, 2001
    I believe the theory because I’ve tested the theory. I only mentioned chopping, and hollow ground blades do bind more than full flat while chopping wood.

    Hollow ground blades split the wood, then the flat sticks. Full flat cleanly chops it. Get a couple of choppers and try it.
    marcinek and katanas like this.
  14. marrenmiller

    marrenmiller Basic Member Basic Member

    Apr 6, 2017
    But did you test it with the same height of grinds for each blade? If the full flat grind has a taller grind than a saber hollow, that doesn't make for a valid comparison. Plus it needs to be the same thickness stock and behind the edge. I've never seen anyone test this with identically set up knives.

    I would argue splitting wood is an uncommon task to do with a folding knife, and those are the only kinds of knives I tend to carry for EDC, so I'll never observe what you're referring to.

    Plus, who hollow grinds a chopping knife???
  15. AntDog

    AntDog Gold Member Gold Member

    Apr 3, 2001
    MMHW, for one. There are tons of others.

    If you want to test it with some folders, cut some cheese. You’ll see what I’m talking about.
  16. katanas


    Jan 6, 2012
    Absolutely THIS! :cool: All of my newer choppers (last 10 yrs. or so) are FFG after many years of experience using many grinds. :thumbsup:
  17. marrenmiller

    marrenmiller Basic Member Basic Member

    Apr 6, 2017
    I cut all manner of material with folders, including cheese and other food, and still have never seen what you're referring to. If someone does a test with identical knives, hollow and flat ground with the same grind height, and can measurably show a difference then I'll believe it.
    Reitwagen likes this.
  18. ridnovir

    ridnovir Gold Member Gold Member

    Mar 12, 2012
    Full flat or Convex for me.

    BTW I despise compound grinds.
    Pomsbz and marrenmiller like this.
  19. pinnah


    Jul 28, 2011
    Horses for courses.

    I like different skis for different snow. I like different footwear for different activities. I like different grinds for different tasks.

    I own more Buck knives than any other brand. The beauty of their new (as of 2000 - man I'm getting old) grind is how thin it is behind the edge. That's cool. But IMO, the blades are generally too thick and the shoulders on the grind are too sharp and they hang up.

    I have a Buck 110 and a few other hollow grind knives that I've "flattened" on a course stone. Generally what this means is thinning the blade stock and convexing the shoulder of the grind. What I've found is that a flattened hollow grind slices non-separating mediums (cardboard, potatoes, apples) much better than non-flattened hollow grinds.

    For general EDC use, I like thinner, flatter blades. A full flat grind, a flattened hollow grind (e.g., one of my flattened Bucks), or a flat convex blade (e.g., an Opinel) are all good.

    For working with wood, I like something that is thicker behind the edge and convexed near the edge.'

    For bushcraft stuff, I like a convexed saber grind.

    For a general camp knife, I like a thin convexed saber grind but could live with a full flat grind.
    Last edited: May 15, 2019
    Workingsloth777 likes this.
  20. Workingsloth777

    Workingsloth777 Gold Member Gold Member

    Mar 10, 2019
    Ya compound grinds don't really do it for me either.

    I like the looks of some of them (WE eschaton is a good example) but functionally it's not worth it for me.

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