God these are the best. Take a 2 liter bottle and cut the bottom off. make a bowl out of the top. take a bin or something big enough to almost submerge the bottle. fill this "bin" with COLD WATER or put ice in it (makes it much better). then u put the bottle in the water so only the neck of the bottle is out of water. now u light the bowl while pulling up on the bottle. this creates a vacum and the bottle fills with smoke. stop pulling up when the bottom is as at the surface of the water. now u take off the bowl-cap and inhale until the bottle is neck deep in the water.


hint: good way to make that bowl is cut the center out of the cap and cover with foil. then indent the foil into the hole in the cap creating a bowl. take a push-pin or tack and make a small group of holes focused in the center of the bowl and there u go!
casper1 Reviewed by casper1 on . newb in need of some help how do u make a gravity bong?! any tips or supplies? any help at all? thanks in advance Rating: 5