Are you using regular ice or dry-ice? I think having a two-part container, one that's kept dry for the dry ice and one that's for the water would be a longer lasting system.
Or even junkyarding a heater core or a small trans cooler (look at trucks, vans, and a few large RWD or performance cars) and placing it in a much smaller container with dry ice packed around it would probably work even better. Mess free!
__________________
Lets see how far it can go
"All I know about music is that not many people ever really hear it. [...] But the man who creates the music is hearing something else, is dealing with the roar rising from the void and imposing order on it as it hits the air. What is evoked in him, then, is of another order, more terrible because it has no words, and triumphant, too, for the same reason. And his triumph, when he triumphs, is ours." -Sonny's Blues
|