Hi Jeffe,
from the video I see little wich could be 3D printed IMHO
but maybe we could do something like this with 3D printing:
[attachment file=58476]
I think in this design they are using a “lock” screw with a 4-side flathead at the one end, I am not sure if those are available worldwide, but a hole for a standard nut or hexhead screw should be easily possible.
regards
Felix
