3d model description
My take on that folding cube thing
I printed the Kobayashi Cube from thingiverse and realized that I didn't like a few things about it:
too loose/wobbly due to the print-in-place hinges
So I set out to design my variant.
Print 4 copies of "cube.stl" and 16 copies of "link.stl". Ream out the holes with a 2mm drill if your printer isn't perfect, and assemble with pieces of (1.75mm) filament.