Part Modeling > Base Features > Revolve > Basics of the Revolve Feature > About a Revolved Surface
  
About a Revolved Surface
Use the Revolve tool to create a surface by revolving a sketched section around a centerline.
• Define the angle of the revolved surfaces using one of the following angle options:
◦ Variable—Revolves a section from the sketching plane by a specified angle value.
◦ Symmetric—Revolves a section on each side of the sketching plane by half of the specified angle value in each direction.
◦ To Selected—Revolves a section to a selected point, plane, or surface.
• A revolved surface can have open or closed ends. To create a revolved surface with a closed volume, select the Capped Ends check box on the Options tab. Additional surfaces are created that close off the feature.
 
* The Capped ends option requires a closed section.