This is a simple infinity cube that can be easily printed and assembled, even if your settings aren't perfectly dialed in. All pieces should snap together, and you can refer to the pictures for assembly.

I would recommend printing the pins horizontally and the cubes in an orientation where both cutouts run parallel to build plate. Use a very fine layer height for best results. If you would like the joints to fit more snugly, print the v3s version of the joints instead of the v3.