Fully 3D Printed Roly-Poly Toy
Science behind Roly-Poly toys: http://en.wikipedia.org/wiki/Roly-poly_toy
Video of my toy egg wobbling: http://youtu.be/R3dyWaT4dvw
Directions: The top should be printed as hollow as possible with no infill. You may need to print at a much, much slower print to avoid warping issues. The bottom should be printed at the highest density possible. The closer to 100% the better. The goal is to have the highest possible weight difference between the top and bottom pieces. If possible, sand or smooth the bottom piece to achieve the best wobble.
The picture of the models included have been acetone smoothed by me.
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