Square the stock for one of the cross braces (Chapter II., Paragraphs 2, 3 and 4). Lay out the tenon (Chapter V., Paragraph 67) the exact size of the mortise which you have cut in the runner. Form the tenon by sawing just outside the gauge line (Chapter II., Paragraph 14); make a tenon on each end. Prepare the second brace in the same manner as the first. Be sure the braces are exactly the same length between shoulders.
The top is to be made of one wide board, although it may be made of strips if preferred. If furnished S 2 S, it will not be necessary to resurface this piece of material. Plane one edge perfectly straight and square (Chapter II., Paragraph 2). With the pencil and ruler, gauge the width (Chapter II., Paragraph 7); plane to the gauge line. Lay out the desired curves for the two ends. Saw them out with the coping or compass saw, and smooth the edges with the wood file.
Assemble the sled by driving the cross braces into the mortises, and fastening each with a nail driven through the top edge of the runner into the tenon. Space the top properly on the cross braces, and with small nails, nail down through the top into each cross brace. Space the nails uniformly (Chapter II., Paragraph 21).
The soles of this sled are to be made of round iron rods. Flat soles are sometimes used, but the round soles are preferable if carefully put on. With a gouge or chisel, slightly groove the rear, and also the front curved portion of each runner. You should also groove the top edge of each runner where the short turn of the iron lies. Bend the rods the desired shape; this can be done by a little careful work with a hammer and vise. When the rods are the desired shape they will be held in position by the grooves which you have just cut in the runners. Note: Flat strap iron may be used for the soles, if you prefer; it should be fastened with screws. Bore a 3/8" hole in the front of each runner to fasten the rope. Sometimes a round cross rail is put in the front of a sled at this place. It is usually undesirable in a coasting sled, but if you care for it, it may be put in at the time the sled is assembled by having it prepared and the holes bored.
Paint or stain the sled the desired color. This will add to its beauty (Chapter IV., Paragraph 52). As a sled is exposed to considerable moisture, paint is the most serviceable finish. However, a good oil stain will be satisfactory. An enamel paint will give a beautiful and lasting finish.
Optional and Home Projects Employing Similar Principles.
1. The bob coaster shown in the first suggestion affords an opportunity of employing the sled principle in a very elaborate project. However, there is none of the construction that is particularly difficult. The steering device should be made of iron pipe. It may be necessary to have this part of the work made at a plumber's shop. The rest of the project will be very clear from the drawing.