does the diameter have to be a specific value so that the knurling pattern is an integer

does the diameter have to be a specific value so that the knurling pattern is an integer

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  1. 2 months ago
    Anonymous

    yuh

  2. 2 months ago
    Anonymous

    nur

  3. 2 months ago
    Anonymous

    mube

  4. 2 months ago
    Anonymous

    con yoo rebeat de guestyun

  5. 2 months ago
    Anonymous

    Has to be at least close. Try a light knurl and if it gets off so that it isn't a full sized knurl pattern trim a bit off and try again. You'll have to cut down below your last knurl pattern so you have a smooth surface to try again.

    • 2 months ago
      Anonymous

      Could this phenomenon be used by a primitive old-timey blacksmith/machinist as a test to confirm that a set of parts are closely matched? Like if he needed a set of matching pins that were identical but he didn't care what the actual final diameter was.

      • 2 months ago
        Anonymous

        >as a test to confirm that a set of parts are closely matched?
        And the if they are? Have to cut the knurling off after the test. Unless it was part of the spec. And then knurled surfaces don't have to be that close toleranced anyway.

  6. 2 months ago
    Anonymous

    yes. It's very annoying.

  7. 2 months ago
    Anonymous

    No and I have no idea why. It just works.

    • 2 months ago
      Anonymous

      Because when it comes around again to the beginning, the tool will naturally slide into the initial depression instead of trying to cut a new one a fraction of a degree away.
      Then with subsequent passes, it squishes the slightly wider or slightly narrower knurl into the same size as the rest.

      If you were to measure it extremely accurately, the pattern ends up having a lot of deviation - with some knurls slightly larger and some slightly smaller than the others.
      But it's "close enough" and spread out across the surface, so you'd never notice without measuring it closely.

    • 2 months ago
      Anonymous

      Because when it comes around again to the beginning, the tool will naturally slide into the initial depression instead of trying to cut a new one a fraction of a degree away.
      Then with subsequent passes, it squishes the slightly wider or slightly narrower knurl into the same size as the rest.

      If you were to measure it extremely accurately, the pattern ends up having a lot of deviation - with some knurls slightly larger and some slightly smaller than the others.
      But it's "close enough" and spread out across the surface, so you'd never notice without measuring it closely.

      This is correct. The knurling die is free-spinning so it settles into the existing grooves after the first pass.

  8. 2 months ago
    Anonymous

    I remember there being some anecdote about some guy on YouTube knurling a taper. It's all black magic and you don't have to do any math or measuring, just throw the tool at it and it just works.

    • 2 months ago
      Anonymous

      >some guy on YouTube knurling a taper.

      Here's one, I think. I'm not sure because he managed to put me to sleep in the first 3 minutes of irrelevant boomerisms.

  9. 2 months ago
    Anonymous

    anybody that says it works on any diameter has obviously never ruined a part with an ugly, double cut, chicken scratch knurl
    it's not hard to figure out the dp of the knurl by rolling it across a sheet of paper, counting off a 50 or so marks, measuring the length of them and divide. then adjust your diameter/circumference to be an even multiple. if you don't end up with nice rows of pointed pyramids, you done fricked up

    • 2 months ago
      Anonymous

      User error based on your fingers. Try not being 80 IQ next life

      • 2 months ago
        Anonymous

        >is on PrepHole and can't tell dirty hands from brown ones. rope yourself homosexual

        https://i.imgur.com/aXBe6AF.png

        >anybody that says it works on any diameter

        In this particular case, the guru of fine machining says the diameter did not matter:

        https://youtu.be/i9pD5vIHJ8M?si=GklXTf7c9QbnP8XY&t=621

        >guru says
        got me there. i've only been a r&d prototype machinist for 22 years and don't have any israelitetoob vids. obviously i don't know shit from shinola

        • 2 months ago
          Anonymous

          >got me there. i've only been a r&d prototype machinist for 22 years and don't have any israelitetoob vids. obviously i don't know shit from shinola

          need to work on that thin skin there fella. Nobody meant to hurt your fee fees.

          • 2 months ago
            Anonymous

            i got a case of the mondays

            • 2 months ago
              Anonymous

              peak comfy. can it be autumn already? let's skip spring and summer

        • 2 months ago
          Anonymous

          Bait taking aside, upper looks damn fine indeed.

          • 2 months ago
            Anonymous

            good example of why 1018 mild steel sucks for finish vs everything else. left was a test piece from a random drop of mild and right is O1 tool steel hardened and tempered

            >herters brand
            Ah, a connoisseur of "The world's finest" everything.
            Some of the past was SO much better...

            it was criminal that the gca of 1969 put them and a bunch of others out of business when the feds nixed mail order gun delivery

    • 2 months ago
      Anonymous

      >anybody that says it works on any diameter

      In this particular case, the guru of fine machining says the diameter did not matter:

      https://youtu.be/i9pD5vIHJ8M?si=GklXTf7c9QbnP8XY&t=621

      • 2 months ago
        Anonymous

        >the guru of fine machining says the diameter did not matter:
        because it eroded the metal down to a diameter that fit

        • 2 months ago
          Anonymous

          >because it eroded the metal down to a diameter that fit
          so you're saying it knurled it?

          • 2 months ago
            Anonymous

            eventually

    • 2 months ago
      Anonymous

      Why do you have a knurled shellholder?

      • 2 months ago
        Anonymous

        they copies of obsolete herters brand in calibers that didn't exist back when the presses were built

        • 2 months ago
          Anonymous

          >herters brand
          Ah, a connoisseur of "The world's finest" everything.
          Some of the past was SO much better...

  10. 2 months ago
    Anonymous

    This sounds like a fascinating mathematical problem since the knurling will deform the metal affecting circumference slightly.

  11. 2 months ago
    Anonymous

    It all depends on the type of knurling you want to do, if it's just cosmetic, shove it in until it looks right then feed it.

    https://www.doriantool.com/wp-content/uploads/2022/05/SEC-H-Knurling-Tools_LowRes_compressed.pdf

  12. 2 months ago
    Anonymous

    no, the value is what you get after you nurl the nob

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