A customer brought in a jigsaw puzzle today that was held together by some sheets of self-adhesive backing paper called "Puzzle PRESTO!" I have never seen this product before. She said her son managed to flip the puzzle over and then applied this to the back. She said they bought it online. Ordinarily I flip the puzzle by sandwiching it between two sheets of masonite or thick cardboard taped together at the edges, and then use hi-tack self adhesive foamcore for mounting. This keeps it together and gives it structure. This material still allows flexing of the puzzle, so it must be handled carefully until framed, but it does seem to keep the pieces together.
Rick
