t Fig. 252 we have the joint when the leaf is let down to a
vertical position. It should be observed in the latter figure that the
edge A of the drop leaf is in alignment with the axis of the hinge. Steel
or brass back-flap hinges (Fig. 233) are generally used and they are sunk
into the table as suggested.

Set out the work full size as at Fig. 251, and mark point 1, which is to
be the position of the joint. Draw 1, 2, at right angles to the table
top. Mark point 3 on the vertical line for the centre of the hinge, and
mark point 4 approximately as shown.

[Illustration: Fig. 251.--Setting Out for Rule Joint Hinge.]

[Illustration: Fig. 252.--The Rule Joint with Leaf Down.]

With compass point on 3 and radius 3 to 4, describe an arc 4 to 5. This
gives us the true joint line (1, 4, 5). The distance 0 to 3 is usually
determined by the hinge. The knuckle of the back flap hinge is always let
into the under side of the wood and the further it is inserted into the
wood the more the joint will overlap at A (Fig. 252) which shows the
joint when the flap or leaf is down.

SHUTTING JOINTS

This chapter deals with the joint made by the upright rail of a door
frame which carries the lock, or handle, generally called the "slamming
stile." Many and varied are the methods used to make a draught and
air-tight joint at the meeting of the slamming stile and the carcase end,
and our sketches illustrate some of the simplest and also some of the
best and most expensive methods.

[Illustration: Fig. 253.--Shutting Stile of Cupboard Door.]

[Illustration: Fig. 254.--Showing Cupboard End Thicknessed (see B).]

[Illustration: Fig. 255.--Dust-proof Cupboard Door.]

Fig. 253 is a part plan of the end of a simple cupboard of which the
carcase end is all of one thickness (_i.e._, not lined up in thickness).
A small strip of wood (A) is glued and screwed on the end to form a stop
to the door and to prevent the access of dust to the interior of the
cupboard.

Fig. 254 illustrates a similar method; the stop (C) is seen, as in the
previous illustration, but it will be noticed also that the carcase end
in this case is lined up (see B) to give a pilaster-like appearance to
the end, and the moulding is selected on account of its suitability to
hide the joint of the lining piece.

Fig. 255 is of a more intricate type, and is often used on jewellers'
showcases. The end at the right hand is slightly rebated to receive the
frame, and both