Spherical Flexure Joint - Inspired by TU Twente T-Flex

This spherical flexure joint is originally designed by Mark Naves, Ronald Aarts en Dannis Brouwer at the Precision unit of the Technical University Twente. See the video here: https://www.youtube.com/watch?v=tenxq7N5q3k. A detailed description is given here from page 17 onwards: https://www.dspe.nl/wp-content/uploads/2019/03/Mikroniek-Issue-3-2019-1.pdf. I wanted to feel the joint after seeing it, so I made a rough version of it. It is not perfect but it is very satisfying to move around. Printed on Ultimaker S5 with Tough PLA, which is tapped with thread. The flexures are normal PLA. Requires 24x M3x10 screws to assemble. I also added a thicker spring design, because some slicers have trouble with thin walls.