Summary When your 6 year old asks to design Marvin a rocket ship, and wants to help, you just say "Yes"...it's a universal law. When he asks if it can have engines? ...you say " You want 'em to look like the Falcon 9's?" Big thanks to Chemteacher628 for the Engine design! Print Settings Printer Brand: Wanhao Printer: Wanhao Duplicator i3 Plus Rafts: No Supports: Yes Resolution: .3 Infill: 20 Notes: Printing rocket and engines separately, then glue/bond the pieces together. Use Minimal Supports for the "Portholes" and the engines, though not sure if the engines really needed them. Wound up breaking a couple of the nozzles while removing the engines supports, so be careful there.