How to make a tornado machine with an open air vortex! You've probably got just enough time to build this before Halloween. Most other designs that use only a single fan require the tornado to be fully enclosed, which means you can't actually reach in and touch it. With this design you can play with the vortex hands on. Consider supporting my channel on Patreon! Link: https://www.patreon.com/Nig...
The fan I used for this project can be found with a search for '6 Inch Inline Duct Fan'. That will probably be the most expensive part at around $60-80. I run the fan on it's lowest setting so you may be able to get away with using a 4 inch fan which would be less expensive, but it may be louder as it would run at higher speeds for the same airflow.
The ultrasonic foggers are the other unusual part used in this project, and you can find those here (this is an affiliate link): http://ebay.to/2aQK5Sk
The music used in this video is the song 'Natural' by Dolphin-Mind