3D Printed Spring Rocket Launcher

fully 3D-printable rocket launcher! This project uses the natural elasticity of 3D printing filaments to create a spring system—no metal hardware or external springs required. SAFETY WARNING (IMPORTANT) This rocket is launched with significant force. NEVER point the launcher at people, animals, or fragile objects. Use only in open outdoor spaces. Play responsibly! The Trigger Line: recommend using a piece of string or twine attached to the trigger ring. Alternative: If you don't have string, a long piece of unprinted filament can work, though string is much more durable. How to Launch Secure the base to flat ground use the holes in the base for pegs. Slide the rocket onto the central guide rod. Compress the spring arms downward until they engage with the trigger mechanism Insert the pin. Clear the area, look up, and PULL!