Math geeks and science fans are very well familiar with the Trammel of Archimedes. It is a mechanism that generates the shape of an ellipse. This Trammel of Archimedes 3-Axis DIY kit has everything you need to build your own. It comes with laser-cut punch-out sheets.
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This 3-axis winding toy has suction cup stabilizers for additional support. More info is available here.
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