Introduction: Homemade Liquid Nitrogen Generator Using Joule Thomson Effect

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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 http://homemadeliquidnitrogen.com

If you like the extreme cold, you might like the extreme hot. Here is a video of an induction heater
http://www.youtube.com/watch?v=Q6Zrnv4OtbU
You can view a complete tutorial on building one at http://inductionheatertutorial.com