I ruined my store bought chiller trying to make it so it would fit into a 12" hole. So I bought some copper 3/8" ID in two 20 foot coils. Will have to solder them together. Was also thinking about using as much as I can from my other wort chiller, which may mean more unions and 90 degree elbows. Wonder how this will look as really looks don't matter to me, just as long as it works.