Diabolical Corner Joint

Mystery Dovetail Joints

The flared ends of the dovetail pins mean this corner joint can't disassemble the traditional way. And no evidence of a sliding joint appears on the back side, so it can't go together like the double-dovetailed tenon in the previous joint. The secrets are dovetails that slope at three different angles and sockets with coved shoulders Figs. C and D . They allow the boards to slide together in line and then rotate 90 to form the corner. For the record, the dovetails on the outside face of Piece A...