Tutorial - Modeling Lamp shade in Creo Elements/Pro aka Pro/Engineer Wildfire?

1. Step 1

   Sketch >> Top plane.
   
   

2. Step 2

   Draw a circle.
   
   

3. Step 3

   Extrude it.
   
   

4. Step 4

   Sketch >> Top plane.
   
   

5. Step 5

   Draw a circle.
   
   

6. Step 6

   Extrude it with remove material up to next surface.
   
   

7. Step 7

   While selecting the cut feature click Edit >> Pattern.
   
   

8. Step 8

   Pattern it about axis at 360º 8 times.
   
   

9. Step 9

   Front Plane >> Sketch.
   
   

10. Step 10

    Draw a spline.
    
    

11. Step 11

    Exit the sketch. Goto Insert >> Warp.
    
    

12. Step 12

    Select the body.
    
    

13. Step 13

    Click Spine tool.
    
    

14. Step 14

    Click Warp radially along axis.
    
    

15. Step 15

    Now carefully transform the body by dragging the control points.
    
    

16. Step 16

    Click List. Here are all the warp operations done.
    
    

17. Step 17

    Click Warp.
    
    

18. Step 18

    Center type.
    
    

19. Step 19

    Now while pressing alt+shift drag the control point about the edge and input the value of 65.
    
    

20. Step 20

    Similarily about the other edge.
    
    

21. Step 21

    As we can see there are warp operation in list in the order.
    
    

22. Step 22

    Click OK and the feature is generated.
    
    

23. Step 23

    Shell the body while removing the face.
    
    

24. Step 24

    Sketch >> Top plane.
    
    

25. Step 25

    Draw a circle.
    
    

26. Step 26

    Extrude cut it up to next surface.
    
    

27. Step 27

    Well if we apply some more operations like fillet and twisting under warp our result will be like this.