Old School Space Rocket... 2.0

This is an update of the Old School Space Rocket, based on comments from Bre after he cut and build the first physical copy.

Change log:
1. Made the spines that run the length of the hull twice as thick, for structural support and for aesthetics.
2. Re-made the ribs that define the cross-section of the hull from scratch with circular voids and fine-tuned dimensions for aesthetics and better fit.
3. Hollowed out the legs for aesthetics.
4. Re-made the feet using the same spine & rib method as the hull, for consistency, for the challenge, for aesthetics, and for the win!
5. Re-arranged the pieces on the cutting pattern so that you could cut from two rectangles instead of a single square.