Hi Olga, is this what you were after?
I splitted the base curve, deleted a kinky point that caused the crease and sweeped again using the two edges as profiles and the splitted portion of the base curve as rail.
Cheers
Dan

Hi Olga,

Maybe this one:

Thank you Daniele and Paolo

I am studing your suggestions using EMAP and Zebra in Rhino.
Please see the rendering (EMAP)
the left joint seems mirroring thus not smooth.
I do not know it might me ok

I do not know I am still learning it might cause me a problem in prototyping.

Thank you
Olga

Ok Olga,

Version 2:

Hi Olga,

> Please see the rendering (EMAP)
> the left joint seems mirroring thus not smooth.
> I do not know it might me ok

I guess I'm not sure where you are seeing the lack of smoothness?

When zebra lines are all smooth like you show there, it means the surfaces have a high level of smoothness with each other.

If there is a problem there, I don't really see it!

Is it that you don't like the shape of the reflections? That would be something related to the shaping of the surface, a kind of different issue than "smoothness" between parts.

- Michael

Hi Michael

Please see the photo - the segments are not continous



Thanks
Olga

Have you tried drawing a line and using the boolean diff function instead of trim? might make a difference but not sure.

Hi Olga - why does the "mirroring" aspect concern you? A mirrored reflection does not by itself indicate a lack of continuity, it is about the matching up of the shape and flow of reflection lines across the seam.

The view from the other angle that you show does seem to show a small lack of continuity.

However, you're also getting significant additional artifacts from using a coarse analysis mesh and not having the pieces joined together.

Make sure to join the pieces together and when doing the analysis adjust the analysis mesh density to be much higher than the default density. That will help you see more of the true surfaces rather than getting distracted by artifacts caused just by the coarse mesh itself.

Having surfaces that are unjoined next to one another makes them get meshed independently and the resulting analysis meshes do not share vertices at the common edge, which can lead to differences in the display especially when using a too coarse mesh, that's why you also want to join them together to get a better analysis.

Also, I'm not entirely sure which model you are analyzing here, is it the one that Dan posted above "1693_Swan6.3dm" , or a different one?

- Michael