When the ends are small enough to allow the wheels to revolve freely, saw out places in the side-boards of the car (Figs. 127 and 128), into which the square part of the axle will snugly fit.

The Bottom of the Car

may be made of half-inch boards, which can be joined and nailed on to the car, with their irregular ends protruding, after which, with a hand-saw, cut off the ends even with the side-boards, as in Fig. 129.

Then nail in place the head and tail-boards, and in the same manner saw off their protruding ends, even with the side-boards (Fig. 129). To finish your car it is only necessary to slip the wheels upon the axles. The wheels may be held in place by pegs of hard-wood driven through holes in the hub, made for that purpose, as shown in Fig. 130. You will then have a car, but no track to run it upon. However, if you build the toboggan slide which is described in the next chapter, you may lay rails, made of two-by-four timber, down your toboggan slide and thus transform it into a back-yard “switchback.”

Fig. 129 and 130.

But if you have no toboggan slide you will have to build a tramway for your car against the back fence, wood-shed, or any other suitable place.

In the diagram (Fig. 135) here given, the slide is shown as it would be if built against the back fence, extending forward through the middle of the yard. But you must have a

Starting Platform.