How do you drill holes in glass?

A long time. Years? Days? I could go through an 1/8" of boro in less than a minute, probably a lot less. Is that a long time?

Keep the drill bit wet and go no faster than you can keep the tip wet. A good quality bit also makes life easier. Tripple Ripple.

This is a very good time. I need to make 5 holes in every smoking pipe.

You use a handheld machine drill or fixed on the table?

I use a hand held Dremel, high speed. If you feed in a pulsing manner it should go fine.

As Jack said! Keep the drill bit wet (cold water) and use just enough pressure to complete the task. Drill bit quality is VERY important. Unfortunately Taiwan appears to be taking over the TOOL WORLD, so one must search for quality. Diamond P

Tripple Ripple drills work great at $5 each but I also do well with Harbor Freight cheapo imports at 30 cents each. It's the technique.

Just a hint:

Since it is oil-based, polymer-clay makes an excellent dam for drilling. That way you don't have to do an elaborate set-up when using a corded drill. I just use a dremel and make an appropriately sized "O" of clay and adhere it to the glass. Then I put a few drops of water in the "O" and drill the hole. Not practical for things like beads, but great for pendants when you want a front-to-back hole.

Actually, I think it is plasticine clay that is oil based and makes a great waterproof dam that sticks to glass nicely. Polyclay may work fine, but the little I have used does not have the oil feel of the plastic clay sold at grocery stores and so forth for years for kids to play with.

I think if you put polymer clay (especially Fimo and the other newer clays) on any absorbent paper overnight, you would change your mind. You may be thinking of PlayDough. Polymer clay is a recognized medium within the creative arts world, and has been for many years. See the links below:

my own contribution is the 6th reprint image from the top inthe LD journal link above. I worked in PC for over ten years beforeswitching to glass, so I'm intimately familiar with the oil properties ofthe clay.

Kelly Keniston KellyK fused Beads and Pendants