With the sleds completed, prepare The Bob-Sled Connecting Seat (F, Fig. 563) of the size shown, then the connecting blocks G, H, I and / (Figs. 563, 564 and 565). Make blocks G and H in one piece (Fig. 566), bore a 3/4-inch hole through the piece at the center of its length, for the king-bolt, and rip in half as indicated by dotted lines. Nail block H to the under side of seat F, and block G to the seat of the bow sled. Bore a hole through seat F directly over that in block H. Figures 563 and 564 indicate how the king-bolt runs down through

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Fig. 563. - Detail of Bob-Sled Seat

Fig. 564. - How Bow Sled is Bolted to Seat

Fig. 565. - How Stern Sled is Hinged to Seat seat F and block H, then through two iron washers, through block G, seat, E, a third washer, and the nut.

Block I is beveled upon its side edges to make it fit across the stern seat at the angle shown in Fig. 565. Nail it securely to the seat, then brace it with the block J, beveling the edge of J so it will fit squarely against block I. Block I must be hinged to seat F by means of 4-by-4-inch hinges. Bolt the hinges in place with stove-bolts of the length specified. The stern sled is hinged to make it rise and fall independently of the bow sled when the bob-sled runs over uneven ground, or when it has reached the foot of a coasting hill or toboggan-slide. Connect the bow of this sled to the under side of the bob-sled seat, with check-chains (Figs. 554 and 555), driving screw-eyes into crosspiece C and into the under side of seat F, to connect the chains to.

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Fig. 567. - Blocks for Fig. 566. - Blocks for Fig. 568. - How to Connecting Stern Sled Connecting Bow Sled to Attach Steering-Line to to Bob-Sled Seat Bob-Sled Seat Foot-Bar

Upholstering the Seat. If you upholster the bob-sled seat, you must nail strips K and L (Figs. 569 and 570) to its edges, to hold in the upholstering material. Cut these strips 2 inches wide, and round the outer edge of the top of each, as shown in Fig. 570, to give a rounded edge to the upholstering. Miter the ends of the strips, to make mitered corners.

Spare neither time nor pains in packing in the excelsior padding, because only with painstaking care, adding here and there in low places, and removing from high places, will you get a good job. Dampen the excelsior to make it pack solidly. When you are satisfied that all is in readiness for the covering material, get a piece of ticking or other heavy material, and spread it over the excelsior; then examine the work, and you will be surprised to find low places that you did not notice before. The excelsior must be packed in tightly along the side edges, so that the edges of strips K and L cannot be felt, and along the center to make it higher there than along the edges. With the low places filled out, tack the covering along the remaining sides. Then spread the top covering over this under covering, bring its

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Fig. 569 and 570. - Details Showing Strip around Edge of Seat to Hold in

Upholstering Material edges down over the sides, and tack to the under side of seat board F (Fig. 557).

In the photograph of Fig. 554 you will see how the edges of the upholstered seat can be improved by the addition of upholstering-tacks. If you use an imitation leather covering, you can buy tacks with heads that match If you use other material, you can buy tacks with large brass heads. Space the tacks about 2 inches apart (Figs. 555 and 557).

With the upholstering completed, prepare

The Hand-Rails M (Fig. 557) of the size shown, and round off their edges with a plane to make them easy to grip. Then prepare the cross-pieces N (Fig. 557) 3 inches wide, by the length shown. The hand-rails must be bolted to the crosspieces in the positions indicated in Fig. 557, with the 1-inch stove-bolts specified in the list of material. Use care in boring the bolt holes, to get them in corresponding positions. After bolting the rails to the crosspieces, remove the king-bolt, and the hinge bolts, thus releasing the seat, and screw crosspieces N to the under side of the seat.

Runner Shoes. Buy half-oval iron strips 3/4 inch wide, long enough to turn up and over the bow and stern as shown in Fig. 556, for runner shoes, and have a couple of holes drilled through each, near each end, for screws, for screwing to the under side of the sled runners.

Painting. With the bob-sled's construction completed, protect the wood with paint. The author suggests that you select red for the color. This and a green upholstering material, such as was used upon the model illustrated, make a mighty striking sled, and if your workmanship is good, you will have a job which will make envious all of the boys in your neighborhood, and all around town, who have not built similar sleds.