Piece A

Piece A: dovetails on two faces, sockets on the other two

Exact dimensions. True size, no printing tolerance added. Threads are plain cylinders at the major diameter.

STEP STL free, Xem Studio Design License — Xem Studio

Dimensions

dimension	dovetails
value	6 → 10 mm in the diagonal section, 12 mm long (appear √2 wider on the faces)

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From the full sheet

Kawai tsugite (four-way dovetail joint): every size, notes, mating features and sources. How does the Kawai tsugite joint go together?

Other sizes

Piece B
All parts in their assembled position (each part its own solid)