This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness. wikiHow's Content Management Team carefully monitors the work from our editorial staff to ensure that each article is backed by trusted research and meets our high quality standards. This article has been viewed 3,537,812 times.

X

To make a bong, start by filling up a plastic bottle 1/4 of the way with water. Then, poke a hole near the top of the bottle to make a carb. Poke a second hole just above the waterline and press a downstem through it so the end inside of the bottle is submerged. If you don't have a downstem, you can make one by emptying out a highlighter and covering the end of the tube with foil. To use your bong, light the bowl and inhale through the mouthpiece. When the bottle is full of smoke, release the carb and breathe in. To learn how to make a gravity bong, read on!