I recently got a project from a local resort to make some nice framed sneezeguards for their front lobby. Incidentally, I've never had to put acrylic into a frame before without some kind of back support. Obviously, the easiest solution would just be to use some clear caulking to glue it into place. I don't want to worry about the adhesion failing so I was wondering what kind of glue anyone else would recommend based on experience? I usually keep some 100% silicone around for mounting nonporous 3d objects. Would that do or is it too easy to peel away? The frames are rather large--28.5 x 40. It would be a shame if it loosened and fell back on someones head while they're trying to check in a guest.