Alright, to sum it up what i need help with, i'm having some troubles cutting through glass.
I'm currently making a bong for a friend of mine, and I'm using a POM glass cup as the body.
I've got a ton of the glass bottles that POM juice used to come in, so I figured I'd make a few unique bongs out of them. Only trouble is, it's a rounded surface, and I'm trying to drill a hole in the body of it at a downward angle.
The glass cup looks like this...
And i'm trying to make it look a bit like this...
Only trouble is, I can't seem to cut into it without getting massive cracks around the hole, or accidentally chipping huge pieces out of it.
Anyone know how I should go about this? We've got a ton of drill bits and such, I just don't know where to start. Someone advised a diamond cutter, but I'd like to make it without having to trek to the hardware store and buy diamond tip bits (i know they're cheap, i just would like to avoid having to get one).
Thanks in advance.