It might also be mentioned to smooth off any edges where "tooling" marks will start a crack later. Coarse sand paper or a file ought to work, and will also give the epoxy and glass some "tooth" to adhere the frame to.
Mark Langford, Huntsville, Alabama see KR2S project N56ML at http://home.hiwaay.net/~langford email to N56ML "at" hiwaay.net --------------------------------------------------------------