We have two large bedroom wardrobes with old sliding mirror doors (these
easily predate our ownership - must be 20+ years old?). I've just
removed the wardrobe in one room but have retained the doors, because in
the other room, the mirrors in two of the doors are cracked... these are
shorter (same width) than the two I've just de-installed, so I thought
wouldn't it be a good idea to chop the two spare big ones down to size,
to replace the cracked ones?

Before I start, I'm wondering how feasible this is likely to be? Will
this be toughened glass, which will presuambly mean that score'n snap
won't work? Or does the fact that two doors have managed to have been
cracked (due to visiting nephews slamming them AFAIK!), and the fact
that they have some sort of plastic mesh reinforcement glued to the
back, mean that they are just normal glass?

So, once I'd got the glass out of the frames, I was going to try score'n
snapping them using a glass cutting wheel thing - is that right? These
are big panes, about 2.2m x 1.2m.

Thanks
David