Captive Sphere

Update: Added another version. V3 was created from scratch in Fusion 360, and is higher quality, as Fusion 360 allows a much higher poly count than Tinkercad.
_____________________________________________

When I was going thru machinist training, one of the things we had to do was write a CNC program that would cut a sphere out of a cube of aluminum. That was tough, figuring out all of those little triangles, then flipping the cube and running the CNC program five more times (once each per side).

Creating the same thing out of plastic using a 3D printer is MUCH easier.