dont be dumb dont use a plastic bottle or tin foil you'll mess up your brain and lungs. just use a sobe bottle and the hole should be the size of your pinky. practice with paper intill u get it right but dont inhale the paper. k.
tek(bdm) Reviewed by tek(bdm) on . Waterfall Bong help/questions I recently found out the general concept of a waterfall bong and rushed to make one. I used a regular water bottle, poked a pencil sized hole near bottom, and made a tinfoil bowl for the top of the bottle. For some reason it seems like alot of the smoke it just floating up and only a little is going into the bottle. And also how big should the hole be? with the one I made the water drained out in like 10-seconds. Thanks for all the help! :jointsmile: Rating: 5