It is wise in all such work to true and smooth up all the pieces at once, and if the wood is not thoroly seasoned, to keep the boards under pressure till they are assembled.
In the case of several boards to be jointed into one piece, they should be glued together before the surfaces are smoothed.

Suggestions regarding a few typical pieces follow: _Wall Brackets._ (1) There are three essential parts, the shelf, the support or supports, and the back: the shelf to hold the articles, the support to hold up the shelf, and the back to hold all together, Fig.

276, _a_.

The grain of the wood in the shelf should run left and right, not forward and back, because thus it rests on the support in such a way as not to break easily, and it also acts as a stiffener for the back.

In case the back extends above the shelf, as in Fig.