mitres, the mitre joint line is found by
bisecting the angle, as shown in the various examples, and the following
instructions are given to enable the reader to follow the diagram (Fig.
323). Take a pair of compasses, or dividers, and with any convenient
opening strike out the arc A, B. Put the point of the compasses on A, and
mark another arc C; then, without altering the distance between the
points of the compass, put the point on B, and mark the arc D. Draw the
line E from the corner, so that it cuts through the intersection made by
the arcs C and D. The angle A B is now halved by the line E, and this
method may be applied to any angle.

SAWING BLOCK.--For sawing mouldings, etc., to their approximate shape, a
home-made sawing block is generally used, as shown at Fig. 324. Two
pieces of wood are glued one on the top of the other, the required angle
is transferred thereto, and the saw kerf made. In the sketch the saw
kerfs are shown at 45 degrees, right and left, and other angles and kerfs
may be made where desired.

PLANING.--After sawing the piece to approximately the correct angle, it
is necessary on high-class work to plane the cut end so as to give a
perfect finish and enable a glued joint to be made. This may be
accomplished by using the plane on the shooting board, as shown at Fig.
325, and, if the worker is constantly using mitres of various angles, it
is an easy matter to make new angle blocks and fix them on to the board.
Other workers prefer the screw mitre trap shown at Fig. 326. This
apparatus takes wide plinth or cornice moulds, and the angle may be
altered by fitting temporary packing pieces under the work so as to tilt
the moulding to the desired angle. The method of using the plane is
indicated in the illustration.

Another method in everyday use by those workers who are constantly
mitreing wide pieces of stock at 45 degrees is the "donkey's ear"
shooting board illustrated at Fig. 327. The plane is laid on its side on
the surface of the board marked A, and used in a similar manner to that
shown at Fig. 325.

[Illustration: Fig. 325.--Use of Plane and Shooting Board for Mitreing.]

[Illustration: Fig. 326.--The Screw Mitre Trap.]

A simple method and one that should always be remembered because it is
handy when working without a shooting board is shown at Fig. 328. Set the
marking or cutting gauge to the thickness of the wood to be mitred at 45
degrees; then gauge this distance on the wood, as sho