Build a cheap windtunnel

Want to test out some of your 3D printed designs for a quadcopter?  Well build yourself a cheap windtunnel with a a box fan and some plexiglass.  Looks like it works OK too.

http://makezine.com/projects/wind-tunnel/?utm_source=feedburner&utm_medium=%24{feed}&utm_campaign=Feed%3A+%24{makezineonline}+%28%24{MAKE}%29&utm_content=%24{GoogleReader}