How to Build a Potato Cannon Wall Poster

Here's another poster that looks great on the wall of just about any workshop, classroom, or bedroom: How to Build a Flamethrower. I developed this poster with my professional graphic designer colleague, Jon. Huge: 3' X 2', full color. Great to have, great to give.

The poster covers the design and construction of a powerful spud gun, and covers a variety of ignition methods including taser-powered, piezo-electric, and good ole fashioned flint and steel. I've made *lots* of these and my best...