What about cuts that are impossible with a normal glass cutter, like radiused corners and holes? For that, you’ll need CNC. Yes, you can cut glass on a CNC machine. All you need is a diamond ...

The cutting of glass with steel has been demonstrated to be possible provided its point is ground into the form of the common glaziers' diamond. But while hard steel of this form will cut glass ...

So, you know, don’t do that. Instead, harness science to work for you when learning how to cut glass bottles! When the glass is breaking later on, the energy inside the bottle will look to crack ...