SummaryThis may not be a new invention, but I've never seen it before. It's a cube trapped inside a sphere (ball), and prints well. Just for your information, the opposite corners of the cube are the same dimension as the outside radius of the sphere. I printed this in the same scale as presented here, and did so with full support enabled. I also printed it without the base structure you see here in these files. I also printed it with no rafting, since I was doing full interior & exterior support. It turned out OK, but took awhile to clean up even with a new Xacto knife blade (and I'm pretty crafty when it comes to using my hands).InstructionsPrint. Clean. The model shows the interior points of the sphere "holding" the cube. You can leave it as is, or clip the tiny points of the the interior of the sphere (as I did) to have free-floating cube within the confines of the sphere. (I just thought it was more "magical".) NOTE: The photos here show this model before I added the support base. I highly reccommend that you print it this way (I didn't include the original model files for this reason) and then trim away the support base if that is how you'd rather have it. UPDATE: Due to a request, I have also posted a version of the model WITHOUT the support base. Thanks. UPDATE: To anyone who thinks they can print this object without full support, please update me with photos of this object being printed without full support. The model is almost geometrically perfect... I made sure that the interior of the ball just BARELY held the cube... and in my 3D print, it did EXACTLY that. My belief is that this "thing" CANNOT be printed without full support. I'd love to believe different. PROVE ME WRONG. I designed this object from scratch. I don't think it can be done, with good results. I also have a BALL-IN-CUBE design, just itching to make it's way to Thingiverse. ;)