T-Shirt Cannon

[garyk]

My students discovered that a shirt folded to be tight in the barrel shoots much farther than a loose one - although the tight shirt has more friction on the way out, it seals in the barrel much better.

Plastic tanks and barrels have always made me nervous (and I'm not an ME, and I'm sure this has been discussed elsewhere.) An industrial arts teacher at a school 668 is helping suggested copper. It's readily available, and tears rather than breaks up into shrapnel. Yes, it's also more expensive, but it takes a good shine! And it's a good way to prepare future homeowners to solder their water lines.