depending on the glass, if it is soft glass(soda bottles beer bottles) type glas a torch will shatter it no prob, if it is pyrex type glass, glass cookwear, pipes, bubblers type glas make sure it is clean and u can heat the glass up till orange, stay in same spot and try to make sure all glass is warm b4 u start, then ust like a graphite rod to poke hole or glass rod to grab molten glass, and "pop" hole,... if u drill must use a diamond tip drill very expensive and run water over drill when drilling to control temperature of drill and glass good luck hope this helps
poppasmoke66 Reviewed by poppasmoke66 on . HELP WITH HOME MADE HOOKAH<----- k we bought a glass jug kinda thing and we have 3 tubes and everything else we just want to know how to drill a hole through the glass for the tubes without making the glas shatter. The glass is about half a centimeter thick. DO YOU THINK IT WILL SHATTER THE WHOLE THING IF WE TRY AND DRILL THREE HOLES? AND WAHT CAN WE DO TO MAKE IT A LESS CHANCE OF SHATTERING????? THANKS Rating: 5