mm wrote:

I"m told you can't cut it at all. This was decades ago, but they had
a professional glass guy on tv who commented on the typical cat
burglar movie where the guy cuts a circle in the window and removes
the circul to unlock the windwo and get inside. He said it was
impossible, because the scoring has to be done on one side, and the
bending has to be done away from the scored line. Since you can't
bend your mirror, especially away from you, you wouldn't be able to do
it.

Any other glass people who can comment on this?

One way to do it.
http://www.crlaurence.com/adv/catalogs/CRL33/287.pdf bottom of the
page

Don't always believe the stuff you see on the tube. This on IMDB
the Vincent Price movie, The Bat...
"Goofs: Revealing mistakes: The Bat uses a suction cup and a glass
cutter to cut a hole in the glass in order to reach in and unlatch the
door. The circular piece of glass attached to the suction cup is twice
as thick as the glass from which the hole has been cut. The glass
attached to the suction cup is also too thick to cut a hole in using a
simple glass cutter."

R