Miller, Charles M · Peoria, Ill. : The Manual arts press · leaf 129
ENTS Fig. 247. We will now take off two big slices, not all in one cut, but in several. Fig. 248 has the dotted lines showing the depth to be cut, and Fig. 249 shows these same parts cut away. Now cut away x and x until the blade is curved back to edges z and z. The cut away portions will be as in… … FIG. 252. FIG. 253. FIG. 254. The principal objection to the metal propeller is the bending that is liable to occur when the model lights, unless there are lighting devices underneath, and they all add weight. The hub propellers may have metal or hardwood veneers for fans. The hub may be round or…
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