AirPuck v1.0

This is a revival of an old Physics favorite: The air puck. These used to be driven by CO2 in a metal framework. Unfortunately the plastic is too insullating. This uses a balloon and a disused CD-DVD. Build this on a carefully leveled and tightened extruder (to insure circularity) and you have nearly fricitonless air puck.

There is a problem with the nozzle. An inverted rectangle causes it to be closed off. Look for v2.0 of this 'thing' for the fix.