Well I guess its not really a bong..... I don't know. just watch http://video.google.com/videoplay?docid=7506056237036563547&q=sobe+waterfall+bong
mucho smoke - though a bit harsh. I like to freeze it, and then make ice walls - helps a bit with the harshness.
I'd use the bowl from a pipe if you have a metal pipe. The bowl usually screws off, so you don't need a socket wrench where weed will fall through.
Yeah, this is what I do. I have an old glass coke bottle and they had the plastic lids that screw on. It's weird seeing a glass bottle with a screw on lid but damn, it's like the ultimate waterfall.
lol, like 2:20 into that the guy was totally fucking murdering the bottle. And that looked like some dank paper he loaded in there.
Sounds awesome, glass bottles are definitely better for waterfalls than the plastic ones, and you can just leave it empty in the freezer to keep it super cold I recommend however to use a glass slide that would normally be used in a rubber grommet bong or bubbler. It will help with the harshness a bit ime.