The Grasshopper Contour Tool is:
[A] definition [that] was written to speed up the process of creating a contour model while limiting the amount of waste generated during the fabrication of the physical model. An interface was developed within Grasshopper where all of the important settings can be controlled, allowing those who know little about grasshopper to still use the definition. A base surface is supplied to grasshopper, which then scales the surface, cuts the cross sections according to the contour step size, then orients the cross sections to the XY plane.