I have always done a stepped rabbet with a deeper cut for the glass
and a shallower, wider cut for the backer masonite or ply, etc. Then I
use short truss head screws to hold the backer to the frame.

On Aug 26, 11:59*am, "Paul Wolsko" wrote:
Looking for some advice:

I've made an oak frame for a large mirror and now I need to set the mirror
into the frame. *I've got a Fletcher point driver, but the problem seems to
be that the points slip off the tool very easily and, when they do, it sends
a shock through the frame which can cause the mirror to crack, even though
I'm using a masonite backing board. *I haven't been able to find a tool to
adequately drive a point into oak without the risk of cracking the glass -
they all seem geared to small picture frames. *The one I have presses the
point into the wood but, again, it slips. *Others "fire" a point in, and
that implies a shock as well.

I'm not new to woodworking and I know I could fudge something, but I want to
to find something that looks good even though that part of it is facing a
wall. *Any ideas?

Thanks much!

Paul