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The boy mechanic, book 3

Book 3 — A Ski Sled By GEORGE J. EGELBERG

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The sled is built low and wide so that it will not tip easily. The skis, or runners, are cut 10 ft. long and 6 in. wide, from 1-in. ash boards that are straight-grained. At the points where the curve is to be formed, plane off about ¹⁄₄ in. on the upper side, but do not plane off any at the very tip end. This will allow the skis to be more easily bent. If it is not handy to steam the skis, put them in boiling water, and be sure that at least 1¹⁄₂ ft. of the points are covered. Provide a cover for the vessel, so that only very little steam may escape. Let them boil for at least one hour. A good method of bending the points is shown. When the skis are taken from the water, put them as quickly as possible in the bending blocks, side by side, and bend them with a slow, even pressure. Weight the extending ends and leave the skis in the blocks 8 or 10 hours to dry. Sharpen the points after they are bent.

Illustration from The boy mechanic, book 3: 800 things for boys to do

The Runners are Shaped Like a Ski and are Joined Together with Knees for the Top Board

The sled will run easier if the skis have a slight rocker curve. To make this curve, have the center block 6 in. while the two end blocks are 5¹⁄₂ in. high. A ¹⁄₄-in. flat-head bolt is run through the ski, the block, and the cross strip. The holes are countersunk in the surface for the heads of the bolts. The top is made of three 6-in. boards, fastened to the crosspieces. It is a good plan to brace the tips of the skis with a 2-in. strip.

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