Tim Wescott fired this volley in
:


IIRC the stuff that I have in my '69 Chevy was one-part,

Most of them are, except that they use an "activator". It's not truly a
two-part system. The activator merely kick-starts the naturally slower
cure process. I has only to make contact with one side of the film to have
its effect, sort of like "Zip Kicker" for CAs.

But Mirror Glue isn't a CA. Last one I used was a Methacrylate, similar to
some thread-lockers, but transparent.

LLoyd