Just made this bong the other week and because I'm on probation I let some other friends smoke out of it. They said it's smoother than most of theirs with the exception of my friend B's 2 foot glass. I used a flashlight pipe I have as a bowl, and it works amazingly, who knew my first piece was so versatile, and originally used hot glue for the tube connecting the down stem but it continued to leak no matter what so I bought a tube of waterproof epoxy and it works much better with absolutely no leakage. The picture is with the hot glue, the video is after I removed it all and put on epoxy w/ 24 hours for curing. [ame="youtube.com/watch?v=jWkSWWvYZGY"]youtube.com/watch?v=jWkSWWvYZGY[/ame]