How to make your own powerful vortex cannon that boom blasts the air

Let’s say you’re bored. Let’s say you’ve always dreamed of firing a cannon. Let’s say you like blowing things up. Let’s say you spend a free night building this kick ass vortex cannon that can blast the air silly. Let’s say it’d be totally worth it just to see these giant smoke ring explosions in real life. » 5/06/15 2:30pm 5/06/15 2:30pm

Ridiculously powerful handheld cannon blows up on the street

Never get in a street fight in Poland because you never know what kind of garage made weapons they'll bring out against. Like this makeshift cannon that can bring the boom like no other. The noise alone is intimidating. Eastern Europe seems like such a fun place for crazy people to do crazy stuff in the middle of the… » 4/22/14 1:20am 4/22/14 1:20am

Tennis Ball Cannon is a Dog's Best Robotic Friend

Now, a beer launching fridge I can understand, but a tennis ball cannon? I find it amusing when someone spends a tremendous amount of time and effort building something that can automate basic functions—like throwing a tennis ball to a wiener dog. But the results speak for themselves. It is an inspiration for lazy… » 3/17/08 10:00pm 3/17/08 10:00pm

Gasoline-Powered 25-inch Desk Cannon Shows Your Cube Mates Who's Boss

USB Missiles are fun (I shot Dvorak in the chest with one once, it did not induce a heart attack as I had hoped), but actual cannons are even more fun. This 25-inch field cannon is the closest you'll get to having a Civil War cannon in your office—unless you're the undersecretary of Civil War reenactments for the… » 2/21/08 7:20pm 2/21/08 7:20pm