> Is this a hit and miss adventure or is there some other
>method for securing the mirror?
The silicon adhesive, the gooey stiff that comes in tubes, works like a charm. I used it to glue the secondary for my 10" Dobsonian. It was a huge chunk of glass, 2"X2.7"X.75"! But the silicon held it fast, and is still going strong!
Good luck, and thanks for the tip!
Mb