hi ! is there anyone know how to do the circular part of spirale ?

hi ! is there anyone know how to do the circular part of spirale ?

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I think the easiest way will be to review some existing models on this site and see how other people created the shape:
https://grabcad.com/library?page=1&time=all_time&sort=recent&query=spiral%20cord
Search terms of "phone cord" and "Spiral cord" give several results.

 
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Simply sweep along a trajectory with the addition of a twist
:

Spiral Cord Model SolidWorks

 
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