Oh more details. I used a pinpoint diamond bit to scribe the initial circle, then two diamond cutters to drill through the glass ( I sort of kept enlarging the initial groove) .. this took about an hour. Once through I used a hardened tungsten carbide porcelon cutting bit. This one worked the best but on the thick glass but it was quite slow. The diamond bits are $1.50 at princess auto...but the carbide is 17 bucks at revy...amazingly it didn't dull that much
one more point
8..dremmel..skin...fast cutting action....salt water...typing...ouch :x