Introduction: Homemade Liquid Nitrogen Generator Using Joule Thomson Effect

Step by step guide to building your own liquid nitrogen generator. Using easily obtained materials you can liquefy nitrogen or air. The unit cools  to -320F in under 50 minutes. Production is about 350 cc/hr. A full tutorial and plans are at

If you like the extreme cold, you might like the extreme hot. Here is a video of an induction heater
You can view a complete tutorial on building one at