cutting or reshaping window glass??

[oldcorollas]

i know windscreens and side windows are usually tempered glass but...

if you wanted to alter the shape of a window, or use glass from a different car and alter the shape, can it be done easily?
I often cut pyrex and quartz with diamond blades, but never tried on tempered/toughened glass...

failing that, are there places around that make custom windows?

[oldcorollas]

thanks to Jeffro for this quick link..

i wonder if it would be a good idea to anneal the edges of the cut area... or it it will shatter in time regardless?
http://www.cadvision.com/blanchas/54...indshield.html

[LeeRoy]

I guess you might be able to find some more stuff on a hot rod forum especially the ones where they are doing roof drops etc. I would imagine some glass cutting is happening in these instances.