well, here it is.

it turned out a little better than i thought it would with just cap tube.

i ended up using CO2 for this. I was going to use ethane, but it just didn't work out. the pressures are pretty high as it is.

i hacked off some cap tube after last night (first stage). pulled a vac and charged it up.

after the first charge i was only getting -59, and i was a little dissappointed. so, i just started playing around with it, and eventually i just saw the low side pressure drop like a brick and the temperature go with it. i was really trying for -85, but no matter how much i tuned it i couldn't get there. oh well.

here's the pics: