I've got the contraption and it works well. I took an 8-10 ft. section of 3/8" ID clear hose, punched out a 2 liter pop bottle cap, epoxied the hose in and filled the bottle with cold water. I can run the hose into the chamber hold it tight and squeeze the bottle. A couple seconds of water passing through cools them FAST! I just bring two or three filled bottles and switch the hose to each one as I run out of water. I have the hose extended to the bottom so virtually all of the water is used in each bottle. I got the idea either from here or the castboolits site...
