This is a 3D printable version of the curvy copter twisty puzzle. To make this puzzle fully you will need:
24 edge pieces
12 center caps
Print the pieces with a flat face with that face on the buildplate. The core should be oriented with one of the cross shapes on it on the buildplate. You will need to print with a fine layer height and probably do a bit of sanding to keep things smooth.
The centers screw into the core using m3 bolt screws.