Pinhole Idea

I think I have an idea that may be useful to anyone constructing a box pinhole camera. Some of you may remember the 16"x20" pinhole camera I made last year. The biggest problem I had with it (besides crazy-long exposure times) was securing such a large piece of paper inside the camera so it didn't slip, bend, or flutter during exposure. My makeshift solution was simply to tape the paper, but that was a pain and left residue on the print. I kept this issue in mind as I started making a 5"x7" pinhole camera this afternoon and I think may have found a better keeping-the-photo-paper-in-place solution; put the paper in a 5"x7" photo frame and insert that into the camera! It's not a tested solution but it seems better than gaff tape.