Material. - A strip of pine, 2 1/2" wide, 1/2" thick, and about 16" long. Work. - To make a miter-joint.

Mark with the try-square and knife two lines across the middle of the strip from a and e, Fig. 1, about 1/8" apart. Measure carefully the length a b, and lay it off on the face-edge, to obtain a c, then mark with the knife and blade of the try-square, c b. Do the same on the opposite side for the mark f d. From c and d mark lines on the 1/2" side.square with the face-edge.

Saw very accurately against the lines c b and d f, the waste wood being toward a in each case. The pieces put together as in Fig. 2, and the try-square, indicated at a, applied to them, should show a true miter-joint.

The joint may not be true, and, to determine which side is at fault, adjust the T-bevel to exactly 45°, the value of a true miter. To do this, repeat the operation shown in Fig. 1, but more carefully. With a sharp pencil mark on a board with a straight-edge the line a c, Fig, 3, against the try-square; turn the square over, and test the line by marking another on it; if these separate, make a line exactly between the two - this should be correct; then measure off accurate equal lengths a c and a b; join the points c and b; adjust the T-bevel to this last line, as in the figure, and test the pieces with it.

Two faults are shown in Figs. 4 and 5, and the broken lines indicate the wood to be removed in order to correct them, which may be done with the chisel, saw, or plane.

To correct with the saw, fasten the true side with the hand-screw, as shown at a, Fig. 6, square to the stop of the bench-hook, press the piece b against the stop and the piece a; saw between the pieces, so as to cut on b, while a guides the saw.

To correct with the plane the piece is held as shown in Fig. 7, the iron cutting that part which is to be removed. This maintains a square end as well as correcting the bevel.

If a thick piece, fasten in the vise, and with a sharp fine-set smoothing-plane, make very short strokes, as indicated by the arrows at a, b, and c, Fig. 8, cutting only those places where wood should be removed.

Ex. 15.

Fig. 1

Fig. 2

Fig. 3

Fig. 4

Fig. 5

Fig. 6

Fig. 7

Fig. 8