Big Thick Gyro Cube v2

Multiple extruder update

I uploaded separate files for the "odd" and "even" spheres to make it easy to print in multiple colors if you have a dual extrusion printer.

I also separated the supports object so you can include or exclude as you desire, or assign it to a support-material extruder.

-----
v2 Update
Since most printing problems occur at the worst overhangs (closing the vertical circles), I made a second version that includes some support (vs. letting the slicer do it, which