I want to mount a printed part to a standard 2mm motor axis which doesn’t have any dents or profile. Its just round. If I print at exactly 2mm, it fits for the first few times until it gets too lose and the spinning part sometimes falls off.

  • wildbus8979@sh.itjust.works
    link
    fedilink
    English
    arrow-up
    4
    ·
    2 months ago

    2mm is obviously too small for a grub screw. You’re going to need a brass adapter or glue. Either way, it’s probably not coming off (easily) when it’s on there.

  • papalonian@lemmy.world
    link
    fedilink
    English
    arrow-up
    2
    ·
    2 months ago

    Instead of making the hole the exact size, make a small gap so you can use a screw and nut to clamp it down on the peg

    • Linsensuppe@feddit.orgOP
      link
      fedilink
      English
      arrow-up
      2
      ·
      2 months ago

      But doesn’t that create an offset weight? My part will probably spin at several thousand RPM.

  • IMALlama@lemmy.world
    link
    fedilink
    English
    arrow-up
    2
    ·
    2 months ago

    That you’re looking for is called a flange mount. If you search your favorite search engine with “2mm flange mount” you’ll find some results. I do wonder how much torque you’ll be able to transfer, but given the shaft size I suspect you’re not looking at big loads.

  • zinge@lemmy.world
    link
    fedilink
    English
    arrow-up
    2
    ·
    2 months ago

    Sand a flat to create a D profile and then use a shaft collar and set screw