Sci Fi Moon Rocket...model rocket

简介

JackHydrazine made a wonderful model with a wonderful story that's worth checking out. But his model of a 40's style Sci Fi rocket was missing the critical element of being an actual rocket, so I decided to correct that oversite. To build this rocket you will need: * 70mm of BT-20 (18mm) body tube for the motor tube * 80mm of BT-55 (33mm) body tube for the main rocket. Leave this long and cut it after gluing in the body. * Shock cord, I used Kevlar line * A 12" parachute. I recommend Polymaker LW-PLA as it prints like regular PLA but is lighter, but this model should fly on regular PLA. I printed the body with no infill and 1.2mm walls. I printed the nosecone with 10% infill. The motor retainer and engine block will print solid no matter your settings. Use the exploded diagram as a guide but it's pretty straight forward. Once everything is printed, your motor tube should be glued in flush with the bottom of the retainer section of the body and if you look inside you will see it's also flush with the top of the 18mm hole section. Run your shock cord through the hole in the engine block and tie a loop going around the raised center part but inside the raised outer edge. Then glue this engine block inside the 33mm tube with the shock cord inside the tube and the recess facing down. Glue the 33mm tube with the engine block down inside the body until the engine block is pressing on the 18mm tube you glued in earlier. If you left the 33mm tube long, you can now cut it off flush…