ter of the hole in spool D (Fig. 139) is on a level with the spool hub on the opposite support. Nail the supports to a 10-inch by 12-inch board, 8 inches apart, and fasten a cigar box between them for
The Station Platform (Fig. 149).
To Make the Wheel, first lay out the rims upon a piece of heavy cardboard, using the radii shown in Fig. 153 for describing the circles, then lay the sheet of card- Tape Fig. 151 Fig. 132 board upon a board and
Fig. 150.—Make Two Supports like this for the Ferris Wheel Standard.
Figs. 151 and 152.—How a Spool is Fastened to the Top of the Support for a Hub.
Cut out the Rims with a sharp knife, being careful not to run off of the pencil line. The
Hubs of the wheel are spools with six holes bored in them for the spokes to fit in (Fig. 156). Cut six
Spokes 5¾ inches long by ⅛ inch thick for each hub, and cut a slot in one end of each for the cardboard rims to fit in (Figs. 154 and 157). Use a saw rather than a knife in making the slots, for it will make a kerf of just the right width to receive the cardboard and will not be so apt to split the ends of the slender spokes. Whittle the hub ends of the spokes to fit the holes in the spool hubs (Figs. 154 and 157). In
