Fully Printable Spring-Loaded Missile Launcher

This is a small spring-loaded missile launcher based on my [printable spring design](http://www.thingiverse.com/thing:1795083) The design doesn't have a trigger, there's a small hole in the back of the launcher you can tie any thread or wire to and pull it down to fire (the reason is that I plan to incorporate this into a larger design that will trigger the launcher) I printed it in PATG, no supports, no infill, 3 shells, 1mm top and bottom Spring designed in OpenSCAD, the launcher designed in SketchUp, STL fixed with Microsoft 3D Builder. I sliced it in Cura and printed on my Robo3D R1+