Made this using plumbing materials from home depot and some duct tape and cardboard. The only "real" bong piece is the bowl. I fill the first chamber with hot water and the remaining two with ice water. Totally smooth http://i54.photobucket.com/albums/g109/sytherv/2012-04-02161402.jpg
I feel ya, the only water filtering pieces I've hit are 3 bongs (one in my siggy) and a bubbler that I have. But nonetheless both pieces I own are amazing