Ok, 2 heat exchangers, a drainage hole in the back (with steel/brass ballvalve) and a 1.5" gap between the exchangers for ice/dryice/frozen yogurt. I just made the top held down with 1/4-20 bolts for now. I'll think of somehting better
ln2, is ectually -195, i goofed on that one. I ws thinking liquid helium, which would be WAYYY out of control, although i can get my hands on some
