LF Diamond Hole Saws

[sobe]

Princess Auto is probably the best place to get them or ebay

It's cheaper there and works ok. I cut through 2 holes in about 1/2 inch of glass
1st hole was 1 1/2 hours, although my second hole almost took 3 hours to drill it was painful lol but that's almost 1 inch of glass total for one hole saw

[Proteus]

I picked mine up at Rona which has a exchange program. I drilled 4 holes and returned it for a new one for twenty bucks