re: His "address" is ???

moi@moi3d.com

Hi Mala,

re:
> The rings...

It helps a lot if you can please post the .3dm model file for your objects instead of a screenshot.

With the .3dm model file there is a lot more that can be done like I can rotate around and examine your objects and figure out what's going on. With a screenshot I'll usually have to make a guess at what is going on instead of being able to examine your particular case.

Thanks, - Michael

Something in relation with the title and maybe history ;)

If you draw the "Profil" out of the "Bounding box" of the Rail
you can draw them on the same plane for make a "tore" ! ;)

So it's very easy to modify the Profil for change the result of the sweep
and this all along the session!