Creating Surfaces
 Wireframe and Surface allows you to model both simple and complex surfaces using
    techniques such as extruding, lofting and sweeping.Two creation modes are available:
    either you create geometry with its history or not. Geometry with no history is called a
    datum. Please refer to Creating Datums for more information. 
  
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    Create extruded surfaces: select a profile, specify the extrusion direction, the start
      and end limits. | 
   
  
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    Create surfaces
    of revolution: select a profile and a rotation axis, and key in an angle | 
   
  
      
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    Create spherical surfaces: select the
      center point of the sphere, the axis-system defining the meridian and
      parallel curves, and define the angular limits of the spherical surface | 
   
  
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    Offset surfaces: select a surface, specify the offset value and choose the
      offset direction | 
   
  
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    Create swept surfaces: select a guide curve, a planar profile, optionally a spine and
      second guide curve, and  position the profile | 
   
  
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    Create filling surfaces: select curves/surface edges to form a closed boundary and specify the continuity type | 
   
  
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    Creating lofted surfaces: select one or two planar section curves, optionally guide
      curves and a spine | 
   
  
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    Creating
      blended surfaces: select
      two curves, and possibly their support, specify the tension, continuity,
      closing point and coupling ratio, if needed. | 
   
   
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