[Mathew]

This is the thingie (yeller arrow) that made me think you are using a swivel for #3 in your model.

What is it?

You still have some splain'in to do.

If this isn't 1-L, then we need some labels on the artwork to define what each object represents.

Thanks,

Bagger

Its all in 2-K and 1-L that define the planes and the mechanical structure which duplicates the left arm anatomically.

The yellow arrow is the pointing towards the swivel in 2-K which defines the accumulator no.3 of the left wrist....