Round Servo housing

I'm testing out rounded joints for robotic limbs.
Why? Because I've delayed my robot army for far too long.
Also because I have difficulty understanding movement in theoretical/3d/non-real/non-physical objects (vectors and all)
What's this for?
Like mentioned above this is a test, so not perfect but the idea is to have ball-joints and sockets that are easy to print and are replaceable and can fit a wide range of servo projects.

This is NOT a final product and I'll make a few generic, g