Surface from Subdiv
Creates a NURBs object from a selected subdivision object. The created NURBs objects inherit the subdivision object name, transform, and shader information.
Note: The same result can be achieved by using Pick > Component (set to surfaces) to select the limit surfaces of the subdivision object, then using Copy and Paste. This method can be used to create NURBs surfaces from only a section of the limit surfaces within a subdivision object.
Access this tool from the Surfaces palette:
Surface From Subdiv settings
Keep Originals
Turn on to keep the source subdivision object.