Select NURBS object. > Modify panel > Create Surfaces rollout > Point Surf
Select NURBS object. > Modify panel > NURBS toolbox > Create Point Surface button
Select NURBS object. > Modify panel > Right-click a viewport. > Tools 2 (lower-left) quadrant > Create Point Surface
Point surface sub-objects are similar to object-level point surfaces. The points are constrained to lie on the surface.
The parameters that appear when you create a point surface sub-object differ from those you see when you modify it as a sub-object.
Length—The length of the surface in current Autodesk VIZ units.
Width—The width of the surface in current Autodesk VIZ units.
Length Points—The number of points along the length of the surface. In other words, the initial number of point columns in the surface. Range=2 to 50. Default=4.
Width Points—The number of points along the width of the surface. In other words, the initial number of point rows in the surface. Range=2 to 50. Default=4.
Generate Mapping Coordinates—Generates mapping coordinates so you can apply mapped materials to the surface.
Flip Normals—Turn on to reverse the direction of the surface normals.
The close controls let you close a surface. They appear on the Point Surface rollout while an independent point surface sub-object is selected. They have no effect if the surface is already closed in that direction.
Close Rows—Closes the surface by joining the ends of its rows.
Close Cols.—Closes the surface by joining the ends of its columns.