Self launching NERF Mega dart

DescriptionThis insert is designed to be 3D printed and allows you to launch Nerf Mega darts without the blaster. Based on my original design. But now the spring is contained inside the dart, and you can have a larger spring for more power. This video, by YouTuber Joel Creates, inspired this project: This Nerf dart fires itself. Thanks to Joel for the idea. AssemblyPrint the dart tube at a slower speed to keep it from falling over or printing messy. You will need a spring with an inner diameter of 6-6.5mm, and an outer diameter of 11.5mm or less, and a length of 30mm (compressed).If you can't find that length, I've found that simply tying two springs together to create a longer one works fine.https://www.amazon.com To assemble:TRIGGER: add your spring to the trigger. OPTIONAL:(add some super glue to keep the spring from falling off)DART: Carefully slide the dart tube into a Nerf Mega dart, trying not to bend or rip it.