Saddle Surface

Download this file to get two halves of the saddle surface [z=x^2-y^2](https://en.wikipedia.org/wiki/Saddle_point) restricted to a circular domain. Oriented and optimized for 3D printing, although you have to glue the halves together later!

Design notes:
* The surface was created with Mathematica, using the code Plot3D[.1(x^2-x^2),{x,-5,5},{y,-5,5}, PlotPoints->40, PlotTheme->"ThickSurface"], then exported to STL
* The STL was restricted to a circular domain, cut in half, and oriented with TInkercad. TInker with it yourself at this public Tinkercad link: [Pringle saddle surface](https://www.tinkercad.com/things/lstozkok9d5-pringle-saddle-surface-on-circular-domain/editv2)

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