ckness the figures must be taken as
nominal, as in practice the saw cut is included. Thus a 1-inch board would,
when planed, be only 7/8 to 15/16 inch thick, unless the actual size is
specified, in which case something extra might be charged.

Construction.

The Trestles.--These should be made first. Begin by getting all the legs
of exactly the same length, and square top and bottom. Then cut off two
22-inch lengths of the 6 by 1 inch wood, squaring the ends carefully. Two
of the legs are laid on the floor, one end against the wall or a batten
nailed to the floor and arranged parallel to one another, as gauged by the
piece C, which is nailed on perfectly square to both, and with its top edge
exactly flush with the ends of the legs.

Next take the 3 by 1 inch wood for the struts, and cut off a piece 32
inches long. Two inches from one end of it make a cross mark with the
square, and from the ends of the mark run lines towards the end at an angle
of 45 degrees. Cut along these lines, and lay one of the edges just cut up
against C, and flush with the outer edge of L1 (Fig. 5). Tack the strut on
temporarily to both legs, turn the trestle over, and draw your pencil
(which should have a sharp point) along the angles which the strut makes
with the legs. This gives you the limits of the overlaps. Detach the strut.

The marking-gauge now comes into use. Set it at 3/8 inch, and make marks on
the sides of the strut down to the limits, pressing the guide against what
will be the inner face of the board. The ends must now be divided down
along the gauge scratches to the limit mark with a tenon or panel saw, the
saw being kept on the inside of the mark, So that its cut is included in
the 3/8 inch, and a cross cut made to detach the piece and leave a
shoulder. The strut is "offered" again to the legs, and a mark is drawn
across the bottom parallel to the ends or the legs for the final saw cut.
Nail on the strut, pressing the legs well up against the shoulders. Its
fellow on the other side of the legs is prepared in exactly the same
manner; and the second trestle is a duplicate of the first, with the
exception that the directions of the struts are reversed relatively to the
C piece, to preserve the symmetry--which, however, is not an important
point.

[Illustration: FIG. 5.--End elevation of joiner's bench.]

Back and Front.--The only operation to be performed on the front piece B
and the back G is the notching of them both on t