Rattleback Demystified

This symmetrical rattleback model is different from other 3D models of rattlebacks published because the secrets are not hidden in the model, but you can get started yourself with trying out and testing the physics behind the rattleback. You can test the model without asymmetric distribution of weight (rotates in both directions), with asymmetric weight in 2 different axes (model has either a preference for turning left or a preference for turning right). The placed arrows act as weights and also give away the preferred spinning direction. Optionally, you can also test the influence of friction by printing an additional spinningplate on a structured PEI plate or a smooth plate. Compare the functionality by using different other substrates, like a glass plate or table surface. In this way, this model becomes an ideal instrument to use in physics class. Very important: The two curves on the bottom are printed in layers. I have already provided the top 1mm with a height range modifier wit