Dremel tools & glass

[captexas]

I know a few people have used Dremel tools to cut holes in glass and I wanted to know what bits they use to do this. I have 4 holes I used a hole saw to cut and now I think they are alittle too small for the special bulkheads I want to use. If I can widen the holes with a Dremel tool, that would be great. Anyone with experience with what bits work best would be great, thanks!

[::pete::]

Diamond bits and they arent cheep ... and dont last.

[captexas]

Nothing is cheap around this hobby! lol. I just figured that would be cheaper than buying a new hole saw and trying to drill a new hole around the originals. Less likely to break the glass as well I would think.

[::pete::]

In other post from different boards they go through a few before the hole is cut ... a heads up.

[captexas]

Hmmm . . . that doesn't sound good as this is 1/2in. glass on the side of the tank. Guess I may have to buy a new hole saw and try it that way. Just give me more grey hairs after drilling 10 holes already in that tank!

[eric]

You just need to grind it a bit to enlargen a hole already cut, right? You know anybody close that does stained glass?

I have a couple of Inland glass grinders that I've used for years shaping glass cleaning up my poor cutting skills and they still grind away no problem. They are diamond bits and constantly kept wet.

1/2" glass is 2-4 times as thick as what I'd normally use, though I'd bet it'd work well. And give a good square edge.

Like this:
http://www.oaktreesg.com/inland-grinders.html

You'd be welcome to come use mine if you find yourself in South Austin.

[Instar]

My experience is the same as the others. Wear the diamond dremel out long before it goes through. Very time consuming as well. A good hole saw goes right through in a couple minutes. Be sure to back brace the area you are drilling and keep it wet. Ed's method is a way better option than the dremel tool.