3D printed 6DOF Robot Arm v1.0 on smart servos (LewanSoul LX-16A)
https://www.thingiverse.com/thing:4223195
https://www.thingiverse.com/thing:4223431
https://www.thingiverse.com/thing:4223655
https://www.thingiverse.com/thing:4223687
The Robot Arm upgrades for increasing the accuracy and payload:
https://cults3d.com/en/3d-model/various/upgraded-servo-tooth-wheel-v2-0
https://cults3d.com/en/3d-model/various/upgrade-for-base-joint
https://cults3d.com/en/3d-model/various/improved-gripper/
Some useful links about LewanSoul servos:
https://www.youtube.com/channel/UCBvl0c_Hg1TkkFkqZp7MYQw
https://github.com/maximkulkin/lewansoul-lx16a
http://www.buildlog.net/blog/2017/09/lewansoul-lobot-lx-16a-serial-servo-review/