REVOLVE Command:

The REVOLVE command allows you to create a curved solid from a 2D Polyline object by sweeping it around an axis. Revolve can be used with an object made from Plines, Polygons, Circles, Ellipses, and Splines. Objects must have a closed path to be revolved.

To access the Revolve command you can:

type revolve or rev at a Command: prompt

OR

select Solids, and then Revolve, under the Draw Menu.

—Prompt: Current wire frame density: ISOLINES=4
Select objects: Select the object or objects you wish to revolve and press Enter.

—Prompt: Select objects: Either select additional objects as part of the revolve or press Enter to move to the next prompt.

—Prompt: Specify start point for axis of revolution or define axis by [Object / X (axis)/ Y (axis)]: Select one end of the axis that the object or objects will be revolved around.

—Prompt: Specify end point of axis: Select the other end of the axis that the object or objects will be revolved around.

—Prompt: Specify angle of revolution <360>: Type a value for the degrees of revolution and Enter or press Enter to accept the default of full circle.