DIY Workshop - Make a Powerful Air Cannon for $50

This video demonstrates the construction process and design of a coaxial piston cannon. 2" diameter chamber and 1" barrel, perfect for C-cell batteries. ~-~~-~~~-~~-~ Check out my latest video: "How To View Invisible Air Currents With Lasers"    • How To See Invisible Air Currents With Las...   ~-~~-~~~-~~-~