Oh, these guys aren't sounding very helpful, or supportive. I say go for it, if it doesn't work, throw it to the curb. Of course you want to do some research on the freezer, so when hacking in to it you don't rupture coolant lines and send refrigerant into the water supply. My one other thought is that Ice cream salt cools the melting point of ice to 2 degrees, or something to that affect. Hey, if no one tries it, how can we tell you it won't work. Just have fun doing it, that's what counts!