hmmm... i've never done it that way. i always just cut out a hole in the middle of the bottom about half the size of a dime and then put my finger on the hole to plug it and fill it up with water. then put my chillum in the mouth of the bottle which is a snug fit. granted it takes another person to light it while you hold the bottle and take your finger off the hole, but the suction is great and i've nerver had a problem with it.
exiled247 Reviewed by exiled247 on . How to make a gravity bong? How do you make one? I know what they look like... but do you guys have instructions for making a good one? I have one but its a pain in the butt to use. I want to make a larger and more efficient one... the one I have takes a long time to set up so a lot of times we are too high to hit it, even though we want too.. bleh this ish ard to type I just took some gravity bong rips peace :) Rating: 5