I Have been trying to figure out a way to selectively mount a portion of a print, say like a giant post-it, but permanent. The idea being that the edges of the print are exposed and not matted, the print is mounted to a backerboard, but only from the top or a side or some portion of the print, so that the rest of the print is free and unattached. Obviously ATG would discolor the print, but I'm not familiar with any other permanent double sided tape that's acid free either. We have heat presses & cold presses, so using those tools is a possibility, were the right glue / tape available. Any help would be greatly appreciated!