This is essentially a shoulder-mounted sling shot that shoots large homemade Nerf-type darts.
It can also be used to launch other things like tennis balls, golf balls, tomatoes, apples, and even raw eggs.
This is something I had been working on in the back of my mind for over a year, trying to figure out all the details. For some reason the challenge of making a homemade, self-contained, bungee-powered, multi-ammo launcher was incredibly intriguing to me. I had never seen anything like it, and thought it would make a great experimental project.
The finished product is by no means high-powered like a compressed air- or combustion-fueled cannon, but it still packs a decent punch for what it is, and has turned out to be extremely fun to play with.
Please note that most of the information and details for this project are contained in the photos in the form of notes (the little yellow boxes). If you plan to make one of these, be sure to study all the photos and their notes carefully.
Thanks for looking!