edgewise. Make a cut 116″ deep and one inch long across the upper edge, Fig. 256, and screw a small piece over top as a clamp. After thoroly steaming the propeller blade until it is very pliable, insert it into the clamp at the center and twist from the straight side, one fan up, the other down. It is not easy to get the two sides just alike, so I recommend the bending of one side at a time, and when that is dry, remove, and reverse the ends, being sure to keep the straight edge to the front, or the same as before. To be accurate, there must be a guide block to bend to. For a nine-inch propeller, a block like Fig. 257 would be about right. Place guide in position, press blank down to the oblique surface and secure there until dry. Repeat for the other end. It will be seen that the guide block and clamp are both secured to a board for a base; they may be secured to a table or bench-top. A clamp might be devised also that would hold the propeller in a vertical position with guide blocks on either side of center so as to bend and secure both ends at the same time.
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Figs. 255, 256, 257, 258.
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Fig. 259.
Another way to bend propellers is to clamp the center of the blank in a vertical position, and with two clamps made by sawing into
