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Thread: Asymmetry – The REAL DEAL

  1. #121
    Senior Member orangehero's Avatar
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    Can someone please comment if I'm understanding correctly?

    For a typical double-bevel right-hand guyto, the right side secondary bevel is generally ground convex and with greater convexity than the left side, which can also be flat or concave.

    The greater convexity of the right side improves food release. What this also results in is a force to the left when cutting through something. In order to counter this the primary bevel is ground asymmetrically as well, with the right side primary bevel at a more obtuse angle than the left side primary bevel. This also follows the secondary bevel geometry (right side more obtuse than the left side). To control steering, the goal during sharpening is to both maintain the appropriate angle for each side of the primary bevel while also keeping the edge apex centered.

    I think I read the relationship between the angles of the two sides correctly in the previous comments.

  2. #122
    Senior Member Benuser's Avatar
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    To reduce steering to the left you may want to increase the left angle, thus increasing friction. But take care with general statements, as all will depend on the individual knife with its own properties, its sharpening history, and the individual user who is more or less used to steering and compensating for it.

  3. #123
    Senior Member Casaluz's Avatar
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    I was guided to this thread by another member and wanted to thank Dave and everybody else for your ideas, questions and answers. I now know enough to glimpse how much I really do not know about Japanese knives and sharpening. The good side of it is that I have gained a new appreciation to something I already love.

  4. #124

    Zwiefel's Avatar
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    Definitely one of the best threads on forum.

    Quote Originally Posted by Casaluz View Post
    I was guided to this thread by another member and wanted to thank Dave and everybody else for your ideas, questions and answers. I now know enough to glimpse how much I really do not know about Japanese knives and sharpening. The good side of it is that I have gained a new appreciation to something I already love.
    Remember: You're a unique individual...just like everybody else.

  5. #125

  6. #126

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    Suddenly crapping my pants at the thought of sharpening my shiny new Watanabe Nakiri.....

  7. #127
    Senior Member ThEoRy's Avatar
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    Don't overthink it. You are rubbing a piece of steel against a rock.
    Starting this harvest I'm a starving startling artist/
    Lyrical arsonist it's arduous spitting this smartest arsenic/

  8. #128
    Senior Member Benuser's Avatar
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    If you're happy with the existing configuration there's nothing to worry about, unless you're a EdgePRO victim of course. Freehanding, you start somewhere behind the bevel with the blade very near to the stone, little by little raising the spine, until you've reached the very edge and raised a burr. Verify your progress by looking at the scratch pattern. Only when you got the burr you flip to the other side and repeat the process. As you see, no angles, no proportions. Only restoring a former configuration which has moved a very little bit towards the spine.

  9. #129

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    Quote Originally Posted by ThEoRy View Post
    Don't overthink it. You are rubbing a piece of steel against a rock.
    Quote Originally Posted by Benuser View Post
    If you're happy with the existing configuration there's nothing to worry about, unless you're a EdgePRO victim of course. Freehanding, you start somewhere behind the bevel with the blade very near to the stone, little by little raising the spine, until you've reached the very edge and raised a burr. Verify your progress by looking at the scratch pattern. Only when you got the burr you flip to the other side and repeat the process. As you see, no angles, no proportions. Only restoring a former configuration which has moved a very little bit towards the spine.
    Cheers guys. It's exactly that @ThEoRy, I was simply over thinking. I've always managed to get what I consider a respectable edge, the first post simply got me thinking.

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