This version is similar to the original thermoform Kwawu arm. It is suitable for a recipient with a long residual forearm.
This printable files can be found here on thingiverse.
The source Fusion 360 files can be found on Fusion360.
I have redesigned the Kwawu arm to be more natural looking and more functional. The terminal device has a much higher grip strength and functionality. Very good at picking up small things with index finger and thumb and big things with whole hand.