Drill in glass

[gavagai]

No, I simply don't think it's possible to drill in tempered glass without it exploding, so it's important to find "ordinary" glass.

That was more of a response to the thread's reasoning about whether glass can crack from tensions, which it can. But it can crack whether you drill or not, that's just how glass works. This is 99% of the time the case with mouth-blown glass and it's due to improper cooling or mixing different colors that aren't compatible.
However, it is definitely not common, and if you work with the glass carefully with water (the drill core gets several hundred degrees hot quite quickly), much has to go wrong for it to be an issue. My first post might have sounded drastic, but that wasn't the intention! You can continue with your craft without worry, just choose the right glass

I guess I'll have to try to find non-tempered glass then. The whole point of this is that I want to be able to find thrift store glass and similar to use. It can be hard to know, unfortunately, but I'll have to make educated guesses. And if it turns out that all tempered glass explodes when drilled, at least I'll know I was wrong after I've drilled.

 

[Marre666]

I use a drill that I run at low speeds with a ceramic drill bit... works great

 

[Marre666]

For klinkers not ceramics

 

[Bödde]

I guess I'll have to try to find non-tempered glass then. The whole point of this was that I want to be able to find thrift shop glass and the like to use. It might be difficult to know, unfortunately, but I guess I'll have to make educated guesses. And if it turns out that all tempered glass explodes when drilled, at least I'll know I was wrong after drilling.

Yes, it can be difficult to determine, but I would dare to say that you were unlucky to find a tempered one.
Hahaha, yes then at least you

 

[hekosi]

I read in a book that you could cut window glass with ordinary scissors if you held it underwater, I have never tried it though, sounds unlikely, but they claimed it was vibrations/clicking that caused the glass to crack.

It is absolutely possible, when I heard it the first time a couple of years ago I had to experiment a bit, and it worked perfectly well.
There are definitely several films on YouTube showing people doing it, here is one:
http://www.youtube.com/watch?v=L5u7SCNVYTA

 

[anders07]

I drilled a hole in a ceiling fixture, should I avoid going under it now? How do they manufacture fixtures with holes? Don't they drill last? I used a diamond drill meant for the purpose and a water bath, rigged in a pillar drilling machine with foam plastic as the base so I wouldn't force the drill at an angle.
I know glass can explode, I was rinsing a 50L damejeanne, the only piece over a decimeter large was the neck I was holding, and it had received the same treatment many times before.
Read in a book that you could cut window glass with a regular scissors if you held it underwater, but I've never tried, it sounds unlikely, but they claimed it was vibrations/clicking that made the glass crack.

It was one like this I used, 10mm, [link]

Yes, I also taped where I was going to drill. Mostly so it would hold together if it broke, but maybe it had significance for the result, don't know.

When manufacturing glass, holes etc. are usually drilled before the glass is tempered (if it is to be tempered)...
You can't drill into tempered glass...

 

[Bödde]

It is absolutely possible, when I heard it for the first time a couple of years ago, I had to experiment a bit, and it worked perfectly. There are definitely several movies on youtube showing people doing it, here is one: [link]

So cool!!!