Make: TV host John Edgar Park writes on his blog:

This beast is on the Make: television set to make our PVC pipe version feel bad. It was built by a local maker (not sure of his name), and it’s a thing of beauty. All four tanks dump their air at once when you pull the trigger, allowing you to launch t-shirts into the top bleachers of a stadium.

John Edgar Park, one pixel at a time

Related:

T-Shirt Cannon – Weekend Projects Podcast