Share Email Facebook Twitter LinkedIn Commands for Constructing 3D Solids and Surfaces from 2D Geometry These commands and system variables are used to create 3D solids and surfaces from 2D geometry such as lines and curves. Commands CONVTONURBS (Command) CVADD (Command) CVREBUILD (Command) CVREMOVE (Command) CVSHOW (Command) EXTRUDE (Command) LOFT (Command) REVOLVE (Command) SWEEP (Command) System Variables DELOBJ (System Variable) LOFTANG1 (System Variable) LOFTANG2 (System Variable) LOFTMAG1 (System Variable) LOFTMAG2 (System Variable) LOFTNORMALS (System Variable) LOFTPARAM (System Variable) SURFACEASSOCIATIVITY (System Variable) SURFACEMODELINGMODE (System Variable)