To learn how I made the vacuum pump used to operate this cannon, take a look at this video: • How to Make a Vacuum Pump A vacuum cannon is an interesting physics demonstration that shows how much ...

How to Make a Powerful Miniature Cannon - diy Guide - Learn to build a functional diy miniature cannon right in your workshop! Follow our detailed guide and use common tools to create a shooting mini ...

A farmer in Washington state thinks the best thing to do with a pumpkin, carved or not, is shoot it out of a cannon. John Thompson can fire a gourd as far as a mile with his homemade cannon. Hundreds ...