>>2913048
4mm OD sounds real small for "arm" even if that was one for every finger and two for thumb.

I can't figure out what you are talking about.

Looks like you got lots of inline servos to mimic muscle contraction.

One of the avenues I'm looking at is cords, belts, cables, chains etc from a central power source with some sort of clutching.


Might take a look at this.
https://braceworks.ca/2017/02/13/health-tech/thubber-stretchable-thermally-conductive-rubber-for-heated-garments-and-robot-muscles/

https://estat.tech/wp-content/uploads/United-States-Patent-10355624.pdf

https://www.electronicspecifier.com/industries/robotics/electroadhesive-clutch-substitutes-conventional-ones-in-robotics

But I'd probably want to go with manual clutching, probably something that could maniplate several at once from handgrip. Like a grip with "keys" for each finger, or at least a few fingers, or several diff inputs from applying diff angles, or both fingers and angles.