How to Build a formidable potato cannon
Check out this Mad Science Experiment with Jason Young and Sean McMains on how to build a formidable potato cannon out of parts from the hardware store. Be aware this one is a pneumatic ignition. The main ingredient to a potato cannon, or spud cannon, is PVC pipe. This is what most of them out there today are made out of. So, go get all of the PVC, along with the other materials in the video and start launching potatoes with your spud gun, aka spud cannon, spud launcher, potato launcher, etc. etc.