Create a new solid or add to an existing solid by driving a 2D sketch along a spine. (To remove solid material, see Drive Remove.)
Important: Drives created by New > Drive will be considered independent objects. Those created by Add > Drive will be added to the active object. (If only one object exists in the file it is automatically active unless manually deactivated.) See Activate / Deactivate and Activating Objects.
The following is the Feature Guide for Add / New Drive.