Haha thanks, not bad for propane and nitrous oxide. If I bought some copper tubing it would have looked better, but I was just using old copper pipe I had left over from the good old days, so I just made it work with lots of splicing. Having a decent compressor and refrigerants would have made a huge difference, but what can ya do? It was pretty fun to make a Frankenstein's monster and see if it would actually perform well.
Here is another picture of it at the lowest temperature I have got to so far, although it won't hold it. I just did it for the fun of it. I originally only planned on -80c but then wanted more. You know how it goes.
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