The artist insists on float mounting a 30 x 36 work on mylar to a backing plexi which will be mounted in a frame with a front piece of plexi and spacers, so it is transparent for 1 1/2"all around the edges of the art. I made mylar hinges , but what adhesive? I tried epoxy, wheat paste, PVA ,but they do not work since the mylar is non-porous. The only thing that works is a microdot of crazy glue, which I don't mind using on the hinge-side facing the plexi. But it's permanent. What adhesive can I use to mount the Mylar hinge to the back of the art (Mylar to Mylar)? The artist is so sold on this layout that they have signed off on any liability on my part. He doesn't even care if the art is permanently mounted to the plexi, but I cannot do it. Any ideas?