I was doing some bike maintenance today and wanted to disassemble my rear hub. It turned out that I needed a 12mm Allen bit for that, which I don’t have. So I 3D printed one! And it worked! Torques safely to 5Nm and I only needed 4Nm for the job. Haven’t tested higher torques.

  • nilloc@discuss.tchncs.deEnglish
    2·
    8 months ago

    How do you really know it torqued to 5 Nm? Did you test this on a fixed nut?

    I would like to see real yield curves before trusting the torque bales coming off a plastic socket.

    • Aux@lemmy.worldOPEnglish
      11·
      8 months ago

      I tested it on a fixed nut to make sure it will fit the the job I had to do. That’s all.

        • Glemek@lemmy.worldEnglish
          1·
          7 months ago

          You could use a divider caliper to be able to translate the size of a fastener to a spot that is easier to measure, if you don’t have to swap between inches and metric it would probably be easy to be accurate enough with it without much practice.

    • T4UTV1S@lemmy.worldEnglish
      21·
      8 months ago

      I don’t think the tolerances would be too bad. A lot of prints that have tight tolerances have a test piece that you print and test against a known object, which let’s you adjust your print to get tighter tolerances. Once you correct for the expansion of the plastic, getting the right tolerances should be totally doable.