Eight rolled-rim cans will have to be used to make four wheels unless the cans are opened at the side when first emptied. Both types of wheels should be made so as to become familiar with the making of each type, as both types are used in making the models shown in this book.
This second type of wheel is rather easier to make than the first, but you should know how to make either type, as then many different sizes of wheels may be made with whatever cans you may have. The rolled rim is more often employed in making large cans than in the smaller ones.
To make wheels suitable for a truck of the size described here, small soup cans may be used; these are usually rolled-rim cans.
Fig. 48.
To make a wheel from two rolled-rim cans, a line should be scribed about the base of the can, ⅜ inch from the bottom, and the can cut down to this line, see [Fig. 48], A. Scribe a line ¼ inch from the base of the second can and cut this can down to this line. Make a cut every ¼ inch around the tin at the side of this second can, each cut to reach the base or rim of the can, see [Fig. 49], B.
Place this part of the wheel on the wooden block and use the riveting hammer (C) to drive the cut side of the can inward as shown in [Fig. 49], B.
Fig. 49.