els, 3/4 by 9-1/2 by 20 in., S-2-S.

LOWER SIDE PANELS

8 vertical mullions, 3/16 by 3/4 by 18 in., S-4-S.
8 vertical mullions, 3/16 by 5/8 by 18 in., S-4-S.
8 horizontal mullions, 3/16 by 3/4 by 9-1/2 in., S-4-S.
8 horizontal mullions, 3/16 by 5/8 by 9-1/2 in., S-4-S.

If the worker will take the trouble to combine the different lengths of
pieces having like thicknesses and widths into pieces of standard
lengths, he will be able to save himself some expense at the mill with
no more work for himself.

Begin work by shaping the ends of the posts as indicated in the drawing.
Lay out and cut the mortises for the tenons of the horizontals or rails.
These mortises need not be deep if the joints are to be reinforced later
with lag screws as is the clock shown. They may be what are known as
stub tenons and mortises. The tenons are not more than 1/2 in. long,
just enough to keep the rail from turning about.

Next lay out and cut the tenons on the rails. Bore the holes for the lag
screws, being careful to bore on adjacent surfaces so that the holes
will miss each other. Use a 3/8 by 3-in. lag screw, boring the hole in
the tenon with a 1/4-in. bit the full depth the screw is to enter.

The side panels should be fitted into grooves in the rails, and before
the frame is put together these panels should be squared up and the
grooves cut in the rails and posts at the proper places.

[Illustration: Hall Clock Complete]

[Illustration: Details of Hall Clock]

The mullions of the lower side panels, it will be noted, are specified
5/8 and 3/4 in. wide. The 5/8-in. pieces are for the central parts of
the frame and the others for the outside. The frame is to be made 1/8
in. larger all around than the distance between the posts and between
the rails so that it may be set in grooves cut in the posts and the
rails to a similar depth, 1/8 in. This is true, also, of the mullions of
the front doors. Square up the shelves so that they may be set into
grooves in the adjacent rails. The middle shelf is to have an overhang
and will rest upon the rails.

The mullions of the top side panels are all of the same width, and it is
not intended or necessary to set their frame into grooves in the posts.
The wood panel back of them gives ample strength.

It is a good plan not to groove the panel upon which the figures are
placed, and which becomes the face of the clock. It is better to fit
this piece in and fasten metal or wood buttons o