mmm...I thought as much

...
I'm thinking keep it simple....have two seperate cooling systems..but one working on the other to achieve the ultra low temp. as explained earlier(cascade system)
How do you mate the Evaporator from system "A" to condensor from system "B"........ to allow "A"to super cool "B"....
Is it a matter of bolting evap.& condensor back to back...this does not sound very efficient...is there a commercial product that will allow two different refrigerants to condense/evaporate in one unit...?
cheers
ps...I hope this makes sense...lol

:shrug: