How to Make a Pretty Strong Paperclip Gun with a Working Trigger
Channel: Ryan Schroeder
Date: 2011-10-03

All it takes is cardboard, tape, rubber-bands, paperclips, and a straw.  It has a working trigger with internal gears. It might be a little tricky for an 8-year-old, and don't expect it to be done in 5 minutes.  But it's actually pretty easy!

Blueprints and Instructions: http://www.oftheword.com/awesomecliplauncher/blueprintsandinstructions1.pdf

Website: http://www.oftheword.com/awesomecliplauncher/


My invention can shoot pretty hard, so don't hurt people!   (Muzzle Velocity = 45 ft/ s. The slowest a real gun will shoot is 400 ft/s, and most real guns shoot a lot faster than that, according to Wikipedia.  The nerf gun in this article [ http://teachingphysics.wordpress.com/2008/11/15/projectile-motion-lab/ ] shoots at 39.4 ft/s. )  (This gun's muzzle energy = 0.181 Joules.  The legal limit for an airsoft gun in the UK is 1.0 Joules, according to Wikipedia.  Also according to Wikipedia, a weak pistol has 159 Joules).