Intro: Diy Tornado Machine
a diy tornado machine i built. i used a bathroom exhaust fan(50cfm) and a fog fountain water nebulizer. the video pretty much explains the rest.
i have a better video here ( http://www.youtube.com/watch?v=pxYPU2KDr18 ) but this one was more informative.
if anyones interested i may make an instructable in the future. please rate/comment. thanks