I have built a mirror frame from cherry. I am planning to use two pieces 24" of aluminum J-channel with one piece reversed, as a hanger at the top - sort of a french cleat arrangement. I've recessed one of the pieces into the frame. I was thinking of embedding it in West System epoxy to fasten it. Does anyone happen to know if West System does OK with aluminum without buying that 'etching' kit' from West ? Seems like a shame to spend that much money on that kit for a 1x24 hanger. I suppose I can just screw it down but I've only got about 3/8 depth there, after routing it out for the recess.