ails. In this case the bottom is raised from the floor,
and may be dadoed into the bottom rails, or dowelled into them or even
supported by strips attached along their lower inside edges. The chest
really is a union of both paneled and framed structures.
[Illustration: Fig. 290. Chest Construction.]
(4) FRAMED STRUCTURES
The principle of the framed structure is similar to that of the panel
construction in that the object is to allow for shrinkage without harm
to construction and also to economize materials. Common examples are
tables, chairs, work-benches, and frame houses.
_The Making of a Table._ The standard height of a table is 30". There
should be 25" clearance under the rails. This leaves approximately
4" for the width of the rails. Assuming that the table is to be of
a simple straight line type with one drawer, the following method of
procedure is suggested:
Cut the boards for the top to the approximate length and stick, (see
p. 47) and clamp them, so as to season them as well as possible before
jointing.
Dress to size the legs and rails. Stand the legs in their proper
positions relative to each other, and mark them F R (front right), F
L (front left), B R (back right), and B L (back left). Plow out the
grooves on the inside of the rails for the fastenings of the top,
Fig. 297, D, if they are to be used. Lay out and cut the tenons and
mortises for the end rails and back rail.
The proper form of the tenon is one with a wide shoulder above it
so that the top of the leg above the mortise will not shear out. The
rails should be set near the outside of the leg so that the tenon may
be as long as possible and the portion of the leg inside it as strong
as possible. A haunched mortise-and-tenon joint, Fig. 267, No. 43 is
sometimes used, giving additional lateral stiffness to the rail. The
proper proportions are shown in Fig. 291. When cut, these parts should
be temporarily assembled to see if they fit.
[Illustration: Fig. 291. A. Cross-Section Thru Back Left Leg and
Adjoining Rails of Table. (Plan). B. Elevation, Showing Wide Shoulder
on Tenon of Rail.]
Inasmuch as a drawer takes the place of a front rail, the front
legs must be tied together in some other way. For this purpose two
stringers or drawer rails may be used, their front edges being as far
from the face of the legs as are the rails from the side and back. The
upper drawer rail may be dovetailed at both ends into the tops of the
legs, as sh
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