Lobster wrote:
Andy Burns wrote:
Lobster wrote:

Doors are very old (and do have this film reinforcement on the back),
so maybe predate some regulation or other?

Mine are about 15 years and I think were made (or at least re-badged)
by Stanley, they have a greenish colour backing film, and on closer
inspection a sticker that says "ACMETRACK please do not remove" is
that similar to yours?

Do report back on any successful (or failed) attempt at cutting
them :-)

Yes, the stuff cuts fine using score'n snap; it's obviously just
ordinary glass. (You then run down a Stanley knife down the back to cut
the reinforcing film, like cutting plasterboard).

Separate but related query: this mirror is in effect going to fit
within an alcove-type space where it is constrained on three out of four
sides. So it needs accurate cutting.

Difficulty is that of course none of the walls are true, so ideally I'd
prepare a paper template before attacking the mirror, but I'm all out of
sheets of paper 7'x3'. Any alternatives to sellotaping together an
entire edition of The Times?!

Well The Time did it's stuff: I Blu-tac'ed about 15 sheets to the wall
individually, ran parcel tape down all the joins, then peeled the
composite off the wall, pulling it away from the Blu-tac.

Next follow-up question!

How does a DIY'er achieve the ground edges to a glass pane that you get
on commercially-supplied mirrors? Grinding wheel in an angle grinder
shudder ?

David