Here's the thing... I have a glass bottle that would make a PERFECT bong, it even has two chambers and is shaped perfectly, but there is only one hole in it, the top of the bottle. I really want to make it into a bong, the problem is that I don't know how to put a hole in it, and I don't want to go trying things and risk breaking it. Does anyone know how i could put a small hole for a stem near the bottom of the bottle without using ablowtorch? Also, the bottle is about two centimeters thick where I want to put the hole. Does anyone have any suggestions?