Dear sir/madam.
I followed along with this video:
https://www.youtube.com/watch?v=Stz7G-9f3jA&ab_channel=DINEDTUDelft.
However this rig doesn’t work (black arrow, elbow pivot points).
What causes this problem? In the video you can properly pivot the elbows, but I can’t. I followed the video step-by-step