Wind-up Toy
thingiverse
This wind-up toy is made solely from 3D printable components, but may require some experimentation with springs and stops. The mechanics are simple and reliable, showcasing 3D printer capabilities and MakerBot's innovative thinking. Assemble parts as indicated in the call-out image, using 3/8" D-profile shafts (mcmaster.com part #8632T2) with shaft collars (mcmaster part #6435K13) for alignment. Secure components with 1/8" dowel pins (mcmaster part #98381A476), and use nylon washers (mcmaster part #90295A471) to reduce friction in rotating parts. For the stop and latch, add 1/8" ID x 1/4" long spacers (mcmaster part #94639A332). To operate, ensure the latch is away from the vehicle body, then turn left wheels counterclockwise to wind the spring. Flip the latch inward and watch the toy take off.
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