These drawings are reproduced here in Figs. 305
to 316 and 318. We had to make four frames each, of the A, B, C and E
sizes, two each of the F, G and I sizes and one each of the H, I, J and K
sizes. Of the D frames two were made with the ends cut away on the outer
half, as illustrated in Fig. 308, and two were cut away at the inner side,
the reason for which will appear presently. When fastening the timbers
together we cut notches in each stick, as shown in Fig. 317. The depth of
each notch was just one-quarter the diameter of the stick; that is, the
notch was 3/4 of an inch deep in a 3-inch stick and 1 inch deep in a
4-inch stick. Care was taken not to exceed this depth, for fear of
weakening the sticks. In the case of frame D, the sticks were not notched
or mortised together. It will be noticed that the measurements are given
to the inner edges of the sticks in some cases, and to the outer edges in
others. The reason for this, as Uncle Ed explained it, was because the
thickness of our sticks would vary considerably, and it was important that
many of the measurements be exact, otherwise the frames would not fit into
each other as they should. Another thing to which he called our attention
was the fact that frames A, B, E, F, H, K and L were stiffened with cross
braces, while the rest were not.
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