2011

Table Of Contents
Quick Reference
Commands
CONVTOSURFACE
Converts objects to 3D surfaces.
Create NURBS Surfaces
Create NURBS surfaces by enabling NURBS creation and using many of the
same commands used to create procedural surfaces. You can also convert
existing procedural surfaces into NURBS surfaces.
See also:
Create Solids and Surfaces from Lines and Curves on page 966
Create Surfaces from Other Surfaces on page 1020
Edit NURBS Surfaces on page 1155
Rebuild NURBS Surfaces and Curves on page 1157
Draw Splines on page 679
Modify Splines on page 794
NURBS (Non-Uniform Rational B-Splines) surfaces are part of the suite of 3D
modeling objects that AutoCAD offers (in addition to 3D solids, procedural
surfaces, and meshes).
NURBS surfaces are based on Bezier curves or splines. Therefore, settings such
as degree, fit points, control vertices, weights, and knot parameterization are
important in defining a NURBS surface or curve. AutoCAD splines are
optimized to create NURBS surfaces allowing you to control many of these
options (see SPLINE and SPLINEDIT). The illustration below shows the control
vertices that display when you select a NURBS surface or spline.
Create NURBS Surfaces | 1031