how to make a cfl lamp(bulb) in pro e 5 aka creo

I try to create the bulb, not so difficult but need to prepare project curve for top and bottom spiral.
For the middle just use helical sweep.
After create half spiral, than copy and rotate. Done

First step, create helical sweep with trajectory (see the picture), pitch 4, and sketch diameter 17 cyrcle.

Step four, similar with step three but for the top side

Step five, After got half spiral. DO copy and paste special with rotate 180 degrees

any video related to model

Step two, create projected curve from view and side view

Step three, create sweep with the projected curve for trajectory and use diameter spiral to make sketch