Drilling underwater is mostly to absorb the friction heat from the drill bit (either submerge the bottle or run a flow of water over the drilling area) but has some other benefits as well like not putting glass shards in your lungs. While a regular bit might work, even one designed to cut glass can very easily crack a glass bottle, even when submerged. You have to make a small hole and slowly drill out from there to expand it. Last time I bought a bit for glass it cost $3-5.
WaZ Reviewed by WaZ on . How to make homemade glass bongs??? Ive seen a few pictures of some bongs that are made of bottles such as Patron, Grey Goose, etc. How do you get a hole in it, can you use a drill?? Also what do you to seal it besides tape. Please help me out they look really cool and i have googled it but with not to much success Rating: 5