Create 3 curves and align them using snap to curve. 1 angular (linear) and the other 2 curvy (cubic)
Take a screen shot with all three curves selected.
Attach Curves: Select all the curves, choose Curves > Attach. Change the following Settings:
Delete History: Select the new attached curves and choose Edit > Delete by Type > History
Revolve Curves: Select the new attached curves and choose Surfaces > Revolve. Use Default settings. *If your surfaces show up black, reverse curve direction. Select the surface, Surfaces > Reverse Curve Direction
Assign New Material: Right-click on the surface and Assign New Material. Choose Blin