Well I finally did it. The last few times I cooled worked out well but thats because I had an endless supply of snow for the water bath. Its spring now, so cooling is going to get tougher (like last summer). Total build time: maybe 30 min. Man, it was easy. It is 3/8 ID X 50 ft. Will try it out on a SMaSH tomorrow (Vienna/Norther Brewer). Hope it goes well.