If the flashlight is to strengthen the tin bracket with a motor from a child’s toy, the axis of which is planted miniature celluloid propeller, and connect the motor to the battery of a flashlight, get a portable fan, which could become a mechanical fan and refresh face in heat.
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To secure the various parts often used connection, using the so-called lock nuts. However, you can do without it. For this it is necessary to saw through the nut, as shown, and...