Had printed one already but wanted something BIGGER. Has a similar look of the "Falcon 9". Size depends on your number of tubes. In order to attach recovery system attach one end of a shock cord the Tubes and other end to the Nose with a glob of super glue. Some sanding to make connection between parts.

5+ tubes=1269.5mm=50in (Insanely Big)(Probably a bad idea) 4 tubes=1069.5mm or 42in (Bit too Big) 3 tubes=869.5mm or 34in (Recommended for looking magnificent) 2 tubes=669.5mm or 26in (Bigger than Average) 1 tube=469.5mm or 18in (Nice Average Size) 0 tubes=269.5mm or 11in (Just the Base and Cone)

(PRINT THE BASE AND NOSE FIRST) I highly recommend this so you can test how things fit and so you don't waste filament. Take Note that the A, B, & C Engine design is only 75% of the D Engines model size.

Have Fun Launching!!!