Build Potato Cannons, Tennis Ball Mortars and More 'Dynamite'- like Devices.
What happens when you duct-tape a couple of potato chip tubes together, then add an energy source, a tennis ball and a match? Well, not much... unless you know the secret to building the fabled tennis ball mortar. This step-by-step guide enables ordinary folk to construct 13 alarmingly operational ballistic devices using inexpensive household or hardware store materials. 274 pages.