Non-uniform rational basis spline is a mathematical model commonly used in computer graphics for generating and representing curves and surfaces. The shape of the surface is determined by Control Point (vertex)

NURBS modelings are useful for constructing organic forms because of the smooth and minimal nature of the curves. NURBS surface types are widely used in the fields of animation, games, scientific visualization, and industrial design.

• To add points on EP Curves
• Right click > Curve Point
• Click and add points to the desirable location
• Curves > Insert Knot
  
  
  
• An "isoparm" is a user-defined section of a NURBS surface
  
  • Right click > Isoparms
  • Surfaces > Insert Isoparms
  
  
• Revolve
• Loft
• Birail
• Extrude
• Detach, Attach