A long while ago someone asked me what could be done with tempered glass. My answer was that you can do anything you want with a piece of tempered glass as long as you don't need to modify it, ie. cut, drill, etc. It is very strong and takes a great deal of punishment before breaking. When a piece of tempered glass does break, the resulting shards don't have nearly the sharp edges that regular glass would have. Last summer I made a short video about the strength of the glass which also demonstrates why it can not be drilled, cut, or modified in any way.
It also shows why if you even just scratch or chip a piece of tempered glass, it will start a cascading process that will eventually lead to a catastrophic failure of the glass.
Tempered Glass Demonstration
Dave
