It will shatter. Go to Lowes or a similar store, and buy a drillbit made for drilling glass. Go slow with the drilling, and apply only the very lightest pressure. It will take a long time to drill through, but you run less chance of cracking the glass that way.

That's how I made my bong, anyway.
Goodman3eb Reviewed by Goodman3eb 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