rom the edge of the blade to the stop, and carefully
lock the screw which adjusts this stop.

[Illustration: Fig. 121.--The Plough Plane and its Parts.]

The plane is now ready for use. Hold the fence close up to the side of
the timber, the hands in position as shown at Fig. 122, the position of
the body being that generally assumed in planing. Move the plane
backwards and forwards in the usual manner, beginning the cut at the end
of the board nearest to the vice jaws (the front), and proceed with the
planing until the depth stop is in contact with the wood. Then take a
step backwards and repeat the process until the whole length of the
groove is ploughed. Care must be taken to force the fence up to the board
with the left hand, whilst the right hand thrusts the plane backwards and
forwards, and the plane must be kept vertical.

[Illustration: Fig. 122.--Method of using the Plough Plane.]

TONGUEING.--The grooves having been completed, the tongues have to be
made. Fig. 123 shows a sketch of a board and the method of marking out
cross tongues (A) and feather tongues (B). The usual procedure for making
cross tongues is to plane the end of the board and use a cutting gauge to
give a line the required distance from the end (see sketch). The board is
sawn with a tenon or panel saw, and the piece of timber for the tongue is
thus procured. If a feather tongue is to be used it is cut diagonally
from the board (B) and the ends cut square as shown by the dotted line.

[Illustration: Fig. 123.--Method of Marking Out for Cross Tongues and
Feather Tongues.]

Feather tongues can be obtained in fairly long lengths out of narrow
boards, whilst on the other hand cross tongues are limited by the width
of the board. After cutting off the tongues, they require planing with
nicety to fit the grooves, and the advantage of a grooved board (Fig.
105) will be appreciated. A glue spoon similar to a plumber's ladle is
generally used to pour the glue into the grooves, and it is customary to
glue the tongue into one board first; after allowing this to set, the
joint is completed in the usual manner.

TONGUEING PLANES.--Fig. 124 shows the end view of a tongueing plane for
working matched joints out of the solid. The method of holding and using
the plane is similar to the directions given for using the plough. The
part lettered F (in front) represents the fence, which in this case is
not adjustable.

[Illustration: Fig. 124., Fig. 125. End Vi