Deathstar screw thread box
Hollowed out the original and inserted a thread to make a screw together box.
I printed small - about 7cm across - which isn't great for the original model as the print gets a bit messy - but the threads worked fine.
I had good success printing threads down with supports - I set supports to 25deg overhang to reduce the amount.
0.2 layer height with 15% infill. Prusa Mini