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.

  • EmilieEvans@lemmy.ml
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    2 months ago

    What is the plastic of your choice?

    PLA, PETG, … behave like a very slowly flowing liquid as such the print will deform/expand (creep).

      • EmilieEvans@lemmy.ml
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        2 months ago

        For production parts look at other materials. Nylon might still be within the range of your 3D-printer.

        For attaching: If you can’t clamp then look at gluing it in place. If you need it detachable maybe drill a hole in the shaft and use a R-clip.

        You can also tap and die the shaft on top. Make sure to use a left or right-handed thread depending on the rotation/load (thread is so that the rotation/force isn’t unscrewing it).