In Fig. 220 the model is shown in two views, the plan and side elevation. The planes are made of 1/16” birch veneer, but other woods will do. The small fore plane is bent at quite a sharp angle and was shaped as shown in Fig. 221. Steam the plane thoroly over the teakettle and place it under pressure until dry and it will remain so bent. The plane is also tilted up a little by means of a small wedge. [Illustration: FIGS. 221, 222.] [Illustration: FIG. 223.] The spine is made of spruce and is ¼” × ¼” × 12”. The large plane has about ⅛” camber and is bent as shown in Fig. 222. Lay a strip as thick as the desired camber on a board that you can nail brads into. Steam the veneer for the plane and lay in the ⅛” strip in this case about one-third the distance back from the front edge, bend down until the edge touches the board underneath the strip and drive brads in slanting so as to hold it down. The brads can be bent down a little after they are driven in. By using brads on both sides the veneer can be held down until dry. The outline can be cut away before or after the bending. The decoration of course is not essential, but it is interesting to beautify it a little. The anchor block for the propeller shaft is of wood ¼” × 1” × 1” and is glued and nailed with brads to the rear end of the spine. A piece of tin ⅜” wide is bent about the top of the anchor block, _f_, Fig. 223. The hole in the wood should be larger than the propeller shaft while the hole in the tin should make a good fit. In this way the bearing is on the tin instead of the wood, and reduces the friction to a minimum. After the tin is on, the block should be wound with linen thread and coated with glue or shellac. [Illustration: FIGS. 224, 225.] The propeller shaft is made from a bicycle spoke, Fig. 223; two of these can be purchased for a nickel. The long nut, shown at _b_, is cut with a metal saw in two places, giving small nuts _c_ and _d_; _c_ is used on the inside and _d_ on the outside of the propeller. The spoke is then cut off long enough to pass thru the propeller, a glass bead as a washer, and the anchor block, with room for a good hook on the end for the attachment of the rubber motor. The propeller will be discussed further in the next chapter; the only thing to be mentioned here is the size of the blank from which it is made, which is ½” × 1” × 4”. Another piece of the spoke is bent as in Fig. 224, and is inserted in the fore end of the spine and bent still further into shape like Fig. 225. This gives the other anchor hook for the rubber motor. One other piece is the small keel shown in the side view. A groove is made in the under side of the spine and the keel set in with glue.