Convert a NURBS or polygonal surface to a subdivision surface
 
 
 
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Modify > Convert > NURBS to Subdiv

Modify > Convert > Polygons to Subdiv

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Troubleshooting Convert

  1. If the polygon mesh does not convert or results in a hard-to-use subdivision surface, see the Prepare a polygonal surface for conversion to a subdivision surface.
  2. If the NURBS surface does not convert to a subdivision surface or results in a hard-to-use subdivision surface see the following: