cient manner. The cost of a pair of 5/8-in. hook joint planes is from
6_s._ to 8_s._ They are of similar size and general appearance to the
ordinary ovolo moulding plane.

[Illustration: Fig. 263.--The Hook Joint.]

[Illustration: Fig. 264.--Hook Joint with loose Tongues.]

[Illustration: Fig. 265.--Rebated Joint with Tongue Slip.]

Fig. 264 is a special type of hook joint as used on larger work. The
joint may be made by using the plough plane, the rebate plane and a
suitably-sized bead plane, the loose tongues being inserted as shown and
fastened by screws and glue.

Fig. 265 is a rebated joint with loose tongue-slip and astragal mould,
suitable for frames over 1-1/4 in. in thickness. The loose tongue-slip
is glued into the right-hand door frame.

Fig. 266 shows a shutting joint used to prevent permeation of dust to the
interior of a drawer. The drawer front is grooved and engages a
suitably-formed slip which is screwed to the bearer as indicated in the
illustration. Occasionally some difficulty is experienced when fitting
the slip to a narrow drawer, but this can always be overcome by putting
in the screws from the top of the bearer instead of from underneath.

[Illustration: Fig. 266.--Dust-proof Drawer, showing the Front grooved to
engage a Slip which is screwed to the Bearer Rail.]

Shutting joints which are required to be "light-tight," such as those
used in photographic work, are generally formed by slightly grooving the
frame and inserting a strip of black velvet. The friction of the high
pile of the velvet prevents the filtration of light through the joint.

When making air-tight showcases, one of the best and simplest tests is to
place a lighted candle in the case and close all the doors; if the candle
goes out within three minutes you have accomplished your object.

THE DOVETAIL JOINT

Nothing definite is known as to the origin of dovetailing, but a quaint
and pleasing little story which is well worth repeating runs as follows:
A farmer had called in the local "joyner" to do sundry repairs at the
homestead. One day, whilst enjoying a humble meal, he sat watching some
doves as they hopped about the yard. Struck by the movement of their
wedge-shaped tails, it occurred to him to joint his timber by the
interlocking method; hence we have _dovetails_.

[Illustration: Fig. 267.--A Single Through Dovetail.]

[Illustration: Fig. 268.--Through Dovetails on Carcase Work (P, Pins; T,
Tails).]

TH