A simple, laser cut 13 x 13 Goban for the Go game.
I added a full size version that requires a cutting bed of about 400 x 400 mm.
The split version should fit in a 300 x 250 mm cutting bed. It is divided into two parts that joins together. Cut the file twice, once for each part of the board and join them together.
Red lines should be cut through.
Green lines should be engraved quite deep.