This is just a more complex polygon version of the Turner's Cube. A friend made me a cube with his CNC machine years ago, and since then I've always wanted to make one like this. There are some pretty tough overhangs on here. Perhaps it would be a little better with a solid base.I had to print with support and honestly, it came out a little rough. The overhangs on the tops of the lower circles are particularly rough. I probably spent a good hour with the old hobby knife...