The stock for the upright piece and end supports is 3/8" thick; that
for the two boys and teeter-totter is 1/4" thick. The upright is made
2" wide and 28" long. On the center line lay off points 1-3/8" apart.
With these as centers, draw semi-circles of 1" radius alternately on
both sides of center line. From each center draw lines tangent to the
circles, as shown in the drawing.
Saw to these lines and curves, and finish the edges so that they are
smooth. Saw out two boys and the teeter-totter board (B, Fig. 13),
cutting out the center opening accurately. Slip this board onto the
upright, and watch it fall from top to bottom in a see-saw motion.
If it fails to travel smoothly, see where the rub is and remove the
obstacle. Fasten the two pairs of cross pieces to each end of the
upright so that it will stand vertically on either end.
Give it a thin coat of paint. Color the boys and fasten them with a
nail thru the body of each boy, fitting loosely, and driven into the
ends of the board. When the see-saw is turned up-end down, the boys
will swing on the nails and keep heads up.
[Illustration: Fig. 13.]
[Illustration]
[Illustration: FALLING TEETER TOTTER]