Half-Dovetailed Joint. Fig. 117.

Material: 2 pieces, 6" X 1 3/8 X 1 3/8".

This is a very strong joint when it is in place with a vertical load upon it, as the dovetail resists all horizontal strains, and has a constant tendency to force itself together. It is sometimes used in fastening sills together at the corners as a substitute for the mortise joint.

The exercise should be held together by a screw, as the construction of the joint can be seen only when the two pieces are separate.

Fig. 117. - Half-Dovetailed Joint.