Drilling holes in glass isn’t rocket science but it does require a few things to make it work…patience, a diamond bit, and most important, water. You’ve got to keep the glass and the bit cool whenever you drill or cut or grind. I found this tutorial from Perpetualplum’s Blog page. I was doing my usual bit of Pinterest viewing. I find so much interesting stuff through Pinterest…
Source : glassart[dot]craftgossip[dot]com