Ross Richardson wrote:
I have a question on what and how to drill a hole in a glass bathroom
mirror. I have to replace the light fixtures and they are different than
what I have. These were the light fixtures in place when we went to full
length vanity mirrors and the installer made access holes for the wire
and the attachment screws. And, guess what, the attachment screws will
be in a different place this time.

What is there to use. I have Googled some and found out that there are
diamond drills out there. How are they used. I have to do this job right
the first time or I get to have a new mirror installed.

Ross

Ross

If you can, find an old broken mirror and do a test run before you try
it on the real thing. Of course the test may dull a cheap carbide bit
to the point it will not work well on the real piece. While drilling
through the glass should not be too problematic, you must be real
careful with the mirrored coating on the back. This is typically a
thin foil or sprayed metallic film. Either way it is very fragile and
if you are not careful you can peel off large pieces beyond the
mounting coverage of the fixture. Taping it might help, but this was
more problematic for me than drilling through the glass itself. If you
do use a diamiond drill bit use plenty of water to clear out the debris
and keep the bit cool. Also, do a search of this newsgroup, I remember
this exact same topic a year or so ago.