About this 3D model

PLEASE USE THE FAR SUPERIOR DESIGN BY benkrasnow: https://www.thingiverse.com/thing:2965775 This is a Hilsch Tube based on the Scientific American article from 1958, preserved online at: http://www.visi.com/~darus/hilsch/ More information at another site: http://www.montagar.com/~patj/hilmnu.htm This is how cold guns work, but they are expensive for such a basic concept. This print has not been tested and the orifice size may need to be changed (sorry for the messy tree). Updated 9/21/14, Shortened version added which may work better and will take less time to print. Using the longer hot tube may be a good idea though. Also enlarged the cone on hot tube to create more restriction. Orifice and cone sizes still need tweaking in order for this to work well.