Looking at the "AR4 2D Drawings" of the J2 Arm there seems to be 2 holes shown on the side of the arm, each 3.3mm diameter x 10mm deep, but the same holes are not on the printable STL. Are the two holes necessary and if so shud they be threaded to 4mm?
The holes on the side were originally inteded to secure some of the cables but are no longer used. I apologize those 2d drawings are out of date.
