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Japanese Edge Geometry On A Western Style Knife

Discussion in 'Fixed Blades' started by dancom, Jul 16, 2018.

  1. dancom

    dancom Dust Maker Best Shop Tool

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    The last chef's knife I made had an asymmetrical, slightly hollowed out right side to aid with vacuum release. It performs as expected...unbelievable food slicer.

    My latest is a Nitro-V, 9" full tang that has a more intentional scoop from a 10" contact wheel. This is 3/32" stock and it's noticeable. The back side of the blade is hollowed out with a 12" contact wheel. I think a 14" wheel for the large radius (Uaraoshi) would be better, but I do the "rock it up and down" thing while grinding to mimic a larger radius wheel.
    [​IMG]

    I'll let you know how it goes.

    What's everyone else working on besides staying cool?

    Dan
     
    Kevin Cox likes this.
  2. Kevin Cox

    Kevin Cox KC knives

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    Nice work Dan.
    I’m setting up a radius platten to try this on a few chef knives. I’ll be useing the same steel nitro v been very happy with it so far.
     
  3. ToddR

    ToddR Putterer, Tinkerer, Waster of Time Staff Member

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    I've given up trying to assemble my Sayber for a while. My garage is an oven. I can't stand it for more than 20 minutes or so. I've started work on a poor man's electro etcher. I learned about from some guy on the internet. He seemed to know what he was talking about. Could be full of it though : )

    Thinking about 3d printing and a new beveling jig. No, i still can't do freehand (does that make me less of a man? ) I just cannot seem to keep that blade straight while i grind. The bevel is all wavy and dippy. I actually think my freehanding is getting worse, not better.

    Mostly, I'm trying to catch up on outdoor projects this summer. Make hay while the sun shines. I try to leave knife work for the cooler months.
     
  4. ToddR

    ToddR Putterer, Tinkerer, Waster of Time Staff Member

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    Oh, almost forgot. I took some time off to do a fun little "non-knife" project. I restored an old Makita tools box light sign I "found" in my sisters garage. I'll take a picture of it this afternoon and post it. Sanded it all down, repainted it, rewired it using an LED rope light and cleaned up the "glass". Looks pretty good. Throws a lot of light. Hanging in my garage right now.
     
  5. dancom

    dancom Dust Maker Best Shop Tool

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    I am lucky in that my garage is fully insulated including the big doors. It hit 33°C here yesterday, but with the help of a few fans I managed to work in the evening without much issue. Oh the sacrifices we make. (sigh). I know, only 33°? Wussy!

    At least I don't have the doors open and a forge running. That's just silliness.
     
  6. ToddR

    ToddR Putterer, Tinkerer, Waster of Time Staff Member

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    I have a little window shaker from my last house that I was actually considering putting in my garage. I'd have to knock a hole through the brick facade and go through the wall (no windows at all - suburban design...ugh) so it wasn't a popular choice. I really wanted to do it, my wife was really opposed - so we compromised and did it her way. I need to get back out there and finish this grinder. My brain is so scattered that I'm liable to see a cool TV show or a Youtube video about woodcarving and i'll be buying a set of carving knives (ok - that's no theoretical - i just bought the set last weekend ). Point is, I never have a problem starting a project or finding something that interests me. The real problem is finding something that interests me and can hold that attention for an extended period. I know i'll be back out there but this heat is a good excuse to loaf for a bit.

    Geez... i guess Myth will be wondering why I'm blah blah blahing on about AC units and procrastination in the "fixed blade" section of the showcase section. Is there a "shootin' the breeze" section?
     
  7. dancom

    dancom Dust Maker Best Shop Tool

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    Ya thanks for hi-jacking the knife thread Todd! :)
    I'll get things back on track. In the first photo you can see the desired geometry is a pretty well represented given the two wheel sizes I have.
    [​IMG]

    With scales on it looks kinda like a kitchen Bowie with a scooped out blade. The scales are bookmatched stabilized Canadian maple burl.
    [​IMG]

    By the way, it is so sharp I was wiping the bevel with a rag. It cut through the rag and into my thumb with surprisingly little force. I won't be doing that again.
    [​IMG]

    Dan

    P.S. The 10" contact wheel from my old BG-272 slips into the Sayber and lines up. It's a miracle of science.
     
    Last edited: Jul 18, 2018
  8. Kevin Cox

    Kevin Cox KC knives

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    Very nice Dan . I hate that to when a knife bites me to. lol.
     
  9. dancom

    dancom Dust Maker Best Shop Tool

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    Thanks Kevin. I have heard that clean cuts heal faster. So keep your knives sharp boys!
     
    Last edited: Jul 18, 2018
  10. ToddR

    ToddR Putterer, Tinkerer, Waster of Time Staff Member

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    That is one funky butt knife geometry. The whole thing looks it just wants to slice something. I assume you do this freehand? I have got to learn how to freehand... : |
     
  11. dancom

    dancom Dust Maker Best Shop Tool

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    Yes, freehand with the contact wheels. It's not perfect, but will be a good tester. I'd really like to get my hands on 6" or 8" smooth contact wheel now.
     

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