On Jun 20, 5:39*pm, John Nagelson wrote:
Could someone recommend a good adhesive to stick the edge of some
plywood to the flat of a plane of glass?

Lots of them. Unlike metals or plastic, you shouldn't have too much of
a problem here with thermal expansion breaking the joint.

I might use cyanoacrylate, or epoxy if I wanted some gap filling. You
could also use various silicones and polyurethane mastics. If you want
a big of resilience in a large job, I'd use PU (if I had some handy)
or else silicone.

Mirrormate is also worth a look - it won't damage the silvering on
mirrors.