Build an original 3D model in either SketchUp or Blender.This may be completed using Linux, Windows, or OS X. Grade Sheet:2 points for any original 3D model saved in COLLADA (.dae) format.2 points for more than one texture mapped to model geometry.2 points for smooth shading (averaged normal vectors).2 points for a concave manifold such as a torus or knot incorporated into a more complicated model.2 points for creativity.