Just a quick remix to combine Version 1 and 2 of the original design by TZRman.
Used V2 as template and changed to the M3 hole on the knuckle arm to use the original tamiya ball joint.

Works perfectly with PLA+, recommend to print as its shown in the stl (standing upright) just use tree support.
Note: You don't have to use support for the screw holes, you can exclude these to safe some printing time.

Anycubic

i3 Mega

No

Yes

0.2

80%