Making picture frames for jigsaw puzzles is part and parcel of everyday picture framing. Most experienced framers should have no problems at all picture framing these reasonably quickly and economically.  The cost of framing puzzles ought not be much more expensive than framing an ordinary prints because similar the same wet-mounting processes are used. The picture framer just needs to be careful not to tip, spill, drop, bump or upset the assembled jigsaw puzzle brought in by Customers, usually on flat boards or cardboard sheets.  Some Customers are aware of the inherent instability of their newly-solve puzzles and attempt to stabilize them with  masking ...