Simple, but cute project of making puzzles in 6mm birch plywood, on laser cutter/engraver (not mine). The board is aprox 55x30cm. It is personalized by names of wedding couple and date of wedding. Empty pieces of puzzles were used to be signed by each guest or couple on wedding party. All puzzles connections are exactly the same so you can assemble puzzles however you want, even on back side. All fine sanded, no finish.