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) ===== #####Twitter: [twitter.com/mathgrrl](https://twitter.com/mathgrrl) #####Hacktastic blog: [www.mathgrrl.com/hacktastic](http://www.mathgrrl.com/hacktastic) #####Shapeways geekhaus store: [www.shapeways.com/shops/mathgrrl](https://www.shapeways.com/shops/mathgrrl)