I made a new version of my POM bong with glass downstem made with a test tube. I also added a base because tipage was a major problem before. heh heh theres a large portion of my carpet that smells like bong water still. the inside of the test tube has a diameter of just under 5/8in or 1.5-1.6cm and can be fitted with hot glue to use any bowl smaller than that. Its got a 6 arm perc. it looks funky in the picture but thats just the angle. complete airtightness, and you can put ice in the top opening. (plus theres a cap for it )
this was made entirely with things i already owned too. which is awesome. didnt have to leave the house once to do it i cant test it though for a while. my friend is coming to town in a week or two. and hes bringing the bud & bowl for it (i still dont have any money availible for this kinda stuff) but based on my previous similar ones, which rips about a 9/10, this can only be better.