Corner Turning Octahedron Twisty Puzzle (CTO)

A 6-axis, corner turning octahedron. It is mechanically equivalent to a regular 3x3 Rubik's Cube without corners, so it solves nearly the same. Each corner can turn in increments of 90 degrees, and each trivial tip can also turn.

To make the puzzle, print each piece by the number indicated on the filename:
* 6 Cap
* 6 Tip
* 6 Center
* 12 Edge
* 8 Corner

Corners are not necessary for function, but they do increase stability and I would recommend printing them.

You need 6 M3 screws a