The project only requires a few pieces PVC tubing, some epoxy, and a dremel or sander to carve the one component that requires a bit of engineering — a wedge that incorporates some fluid dynamics to create a vacuum in the gun barrel. Fortunately, it’s all clearly spelled out in the video, so you don’t have to actually know anything about fluid dynamics to make it work. You just have to know about cheese balls, which should be no problem. For you. Your kids are screwed. [H/T] Gear Junkie
