I made stronger ball joint for great GIUFINI PCB workstation. No need some coating.
You can modify its parameters in Freecad.
I try to made from ABS and PLA. Both is working properly with 0.1 - 0.2 mm layer.
ball_joint.fcstd | 157.2KB | |
joint_with_croco.fcstd | 166.4KB | |
kloub.stl | 99.6KB | |
kloub_croco.stl | 112.2KB |