1. A method for creating a dimensioned object model in a CAD system, comprising: receiving 2D CAD data by a CAD system, the 2D CAD data including dimension information; creating a 3D model corresponding to the 2D CAD data, by the CAD system; associating, by the CAD system, the dimension information with features of the 3D model, including searching the 3D model for vertices and edges to associate with respective dimensions of the dimension information; and storing the 3D model and associated dimension information in the CAD system, wherein editing the dimension information automatically produces corresponding changes in the 3D model, and wherein editing the 3D model directly automatically produces corresponding changes in the associated dimension information.