[youtube=”http://www.youtube.com/watch?v=qA7Op02bCfE&feature=youtube_gdata”]
Launch potato projectiles 200+ yards with this stun-gun triggered, high-powered potato cannon with see-thru action. Get the PDF for this project here: http://blog.makezine.com/archive/2009/08/weekend_project_water_barrel_water.html. More great projects at http://www.makezine.com