Twistyhedron cube

It was real fun to play with
https://www.thingiverse.com/thing:3454075
https://www.thingiverse.com/thing:3324078
https://www.thingiverse.com/thing:186372
but they all somehow missed 3-fold symmetry of a cube. Well if I had found https://www.thingiverse.com/thing:629887 that time I probably would not do my own.
Nevertheless here is my contribution though frankly speaking I see nothing puzzling in it.
There are two versions A and B different in section phase only - choose the one you like better (in the photos version A is black-white-red).
Files cube3a and cube3a1 contain same shape in different positions, the same applies to cube3b and cube3b1.
To make the full cube you need three identical parts.

N.B: version A looks pretty much like the classical cube trisection if specify twist=-180; version B with half-turn twist is somethings different - I wonder whether it interlocks.
It may be interesting to add section phase parameter (instead of just mirror/no-mirror) and play with