Now obtain some coal and break it into small pieces—about the size of gum arabic when purchased. These are to be gummed on the card marked C, in [Fig. 13] to fill the space level between it and the back screen, and thus give the appearance of a tender well filled with coal. The tender will now be as represented at [Fig. 15].
Fig. 16.
Our attention must now be given to the wheels. We require five pairs. The diameter of these should be equal to the spaces cut out on the ‘foundation’ in [Fig. 1], viz. one pair one inch and a quarter, one pair (fly-wheels) one inch and three-quarters, and three pairs one inch and a half. They are to be cut out of ‘thick’ card; the fly-wheels should have sixteen spokes, the others may have eight or twelve. In the centre of each wheel make a pin-hole. [Fig. 16], full size, will show you how to mark and cut out your wheels. The shaded part is to be cut out neatly and carefully with a sharp knife. As each wheel is cut out, paint it chrome-green, and edge each spoke with black. Next obtain a piece or pieces of wood about three-eighths of an inch square at the end, and about one or two feet long. Cut off five pieces, each two inches and a quarter long—this is probably rather longer than required, but they can be cut shorter; they are for axles, and the ends should be painted black.
A piece of bearing shaft. Full size.
Bearing shaft complete, quarter of size.
Having all these prepared, fix each pair of wheels to an axle by sticking a pin through a pin-hole. They are not to be permanently fixed until the axles are stuck on the foundation, as possibly some of the pins may require to be placed higher or lower in the axles in order that all the wheels may be level at the bottom and the engine stand firmly when on a smooth surface. When this is done, fasten the wheels very firmly to the axles with pins cut in half. I should add, the wheels are not intended to revolve. Next provide ‘bearing-shafts’ by taking strips of thin card, the same length as the foundation, and about half an inch wide; draw a line down the the middle of each from end to end. Now fit them to the sides in order to mark on them the positions of the engine-wheel centres, A, B, C. At these make curves, as [shown]. Cut through the line (1,2); it follows the centre line except at the curves; the bottom is quite straight. Paint this ‘vermilion,’ or better still, ‘crimson-lake,’ and edge with white. The bearing shafts are continued round the ends front and rear, but for these it is best to take separate pieces of card of medium thickness; they are only a quarter of an inch wide; paint and edge like the side pieces. Gum in position on the sides and ends of foundation; only the curved parts at A, B, C appear above, the straight part of the upper edge is ‘flush’ (that is, exactly even) with the foundation.
Our copper wire (No. 9 in [list]) is now needed. Cut two pieces just long enough to fit tightly between the second and third ‘raiseups,’ fix them in position parallel with boiler, rather more than half-way up, and near the edge of the ‘raiseups.’