Apparently Impossilbe Sphere- Large

thingiverse

A larger spherical version of the cube puzzle is achieved by going together in the same way as its cube counterpart, with interchangeable parts. The sphere completely surrounds the original cube. The picture clearly shows that bevels were removed from the edges to give a smooth looking sphere when assembled. Since there are no flat surfaces to use as supports, this spherical version is a little harder to align and put together compared to the cube. Pinching the pieces together across the flat inside faces helps maintain alignment so the pieces can be moved into place for assembly. An assembly helper base can be found here: https://www.thingiverse.com/thing:2890931 Print two of each piece, as they are mirror images, or print the 4-piece assembly directly for easier setup. The assembly video is located here: https://www.youtube.com/watch?v=eTNcfCE2R3k&feature=youtu.be