Diabolical Corner Joint

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 match the sockets on the end of Piece B, the dovetail ends on the end of A match the sockets on the outside face of B, and the dovetails on the inside face of

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Assemble this joint in two steps. First, with both pieces oriented outside-face out, slide Piece B into Piece A from the back. When the pieces are flush, the dovetails on the outside faces won't fit.
Carefully rotate the pieces to complete the joint. Bear the inside corners of A against the shoulders of B as you rotate.

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A match the sockets on the inside face of B.The coved sockets in A provide clearance for the outside corner of B as the boards pivot.

Make the pieces

Wood Working for Amateur Craftsman

Wood Working for Amateur Craftsman

THIS book is one of the series of Handbooks on industrial subjects being published by the Popular Mechanics Company. Like Popular Mechanics Magazine, and like the other books in this series, it is written so you can understand it. The purpose of Popular Mechanics Handbooks is to supply a growing demand for high-class, up-to-date and accurate text-books, suitable for home study as well as for class use, on all mechanical subjects. The textand illustrations, in each instance, have been prepared expressly for this series by well known experts, and revised by the editor of Popular Mechanics.

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