Science is fun! Especially when it is used to create a homemade cannon that looks so cool when it fires. This guy connected a self-igniting propane torch to some tubes and then colored the flame so ...

For the base of the table, I used a ceramic flower pot large enough to hold a standard 20-pound liquid propane tank. I also bought a 24-inch circular wood tabletop at a local home center. I drilled a ...

Vortex cannons—those plastic tubes that let you fire little self-contained whirlwinds across the room—are fantastic for harassing friends and coworkers and knocking stuff off desks from afar. But if ...