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How do i build a super cooler? Answered

   I am looking for ways to turn cool down oxygen to -253C.
   Can i do this using house hold materials (Maybe, building a refrigerator that can reach extremely low temperatures)?
   How do i do this?


They produce liquid air by pumping to high pressure and the releasing into a chamber - This provides vast cooling in a multi stage system to liquefy the gas.

I don't think your going to do this at home in any easy way other than buying liquid nitrogen.

Thank you for helping me ;)

The basic principles were well established 100 and odd years ago by Kammerlingh Onnes amongst others. Probably the best way to try it is to find the old papers and work from there

What have you tried / found out so far?

Thats the problem.
All theory, but no practice.
I am trying to find the theory that supports this.

The easiest way at home us to buy liquid nitrogen, and use it to cool down air - when you get a blue liquid, that's liquid oxygen.

Thank you for your help :)

And how do i make nitrogen at home?
Once again, i need a cryogenic system?

Notice where I said "buy"?