Solidworks is a CAD (Computer Aided Design) software program used to build 3D computer models.  Utilizing the input of dimensional parameters and 2D sketches a real to life 3D model emerges.  This helps designers figure out all the details of a product as each piece is designed and virtually assembled together.  Models can then be rendered for realistic presentation images or used to produce manufacturing specifications.  After building the model in Solidworks the files can be directly sent to a rapid prototyping machine which creates a physical ABS model.