Fig. 42. Boat in storm
The various parts of "the ship in a heavy sea" are shown in [Fig. 42]. At a is the cam, at b the crank and handle, and at c the shaft. The boat was sketched free hand and cut out with the coping saw in one piece by sawing exactly on the lines. The ocean was represented by two pieces corresponding to the ground piece in the sawyers, and the wavy outline was not made until everything had been cut out and the combination was ready for assembling.
The most difficult part—the shaft—was made first, and entirely with the knife: A piece of basswood was cut exactly a quarter of an inch square, a section was marked in the centre of this 3⁄16 inch wide, and notches were made on each corner. The two ends were then whittled to an octagonal shape and rounded. The square section in the centre was reduced to 1⁄8 inch wide and the rounded ends sand-papered smooth.
Next, the cam was cut out, and the square hole made. This was accomplished, after spoiling one, by drilling a quarter of an inch hole in the square and cutting the opening square with the point of the knife.
The object of the square opening was to prevent the cam from slipping when in operation. The cam was then placed over the round part of the shaft and glued to the square section, over which it fitted snugly. Next came the crank. This was made the same shape as the cam, but the 1⁄4 inch hole drilled in one end was left round, while the other was cut square as in the cam. The shaft fitted into the round hole and was glued in after the assembling. For the handle on the crank, a piece 1⁄4 inch square was fitted into the square hole, and the rest of it whittled round and sand-papered.
Two cleats, 2 inch × 1⁄4 × 3⁄16 inch, were cut out with the saw and everything was ready for assembling. The two sides of the ocean were held together and the 1⁄4-inch hole at d drilled through both pieces at once.
The two notches at e were cut after the assembling was finished. After the holes were drilled, the wavy line was sawed, and the two ends of the shaft inserted in the holes with the cam inside.
The two cleats were inserted in the ends of the ocean and fastened with brads and glue.
Next, the boat was slipped in between the two sides, with the sloping stern just touching the cam, and a 3⁄8-inch brad was driven through the three thicknesses, sides and boat.
The crank was next slipped over the shaft and glued in position. The crank handle was inserted into the square hole and fastened with glue, and lastly a light rubber band was slipped over the notch on the stern of the boat and the two corresponding notches on the bottom of the ocean. This was to hold the boat against the cam, which gives the motion.