spiral on circular trajectory

[Lor1990]

Hello, everyone!
I have a doubt about how to create an object in 3d: I need to make a spiral with circular trajectory (take as an example a ring) instead of a straight. my first idea was to use the helical command, determine the diameter of the spiral section, the number of coils etc...but I can't determine the trajectory because by default from a linear trajectory.

Do you know any command to make this object?

thanks to all

 

[doking]

There's a lisp that does what you're asking, if she talked about it right here some time ago.http://www.cad3d.it/forum1/threads/33835-creare-una-molla-seguendo-un-percorso/page2Try to take a look