I teach math, in particular, Calculus 3, which involves surfaces in space. I can make all sorts of 3d graphs in Maple, and I can easily export them to X3D or Collada. I've just learned about 3d printing. I am just blown away by the idea that I might actually be able to produce 3d models that my students could hold in their hands. If I could make a model of an xyz coordinate system with a plane, or a paraboloid, or a space curve some how fastened in place on the xyz axis, this would be amazing. Has anyone tried this? Any advice?