The sheet metal material thickness needs to be constant to be a valid sheet metal model.
I think your model is not valid because of this.
You might want to try to split the body;
convert to sheet metal;
flatten each portion of the design.
It won't be elegant with the standard sheet metal functionality.
I don't have access to Sheet metal forum so I'm using this forum if it is not forbidden:
I'm not sure why that is, it should be available to all that have a webkey. Maybe you could raise an issue with the forum moderators?
That is a limited access group, for whatever reason. Go to that forum page, and there should be a "Join group" button, near top left.
I've attached it on step file form. I don't know why but it won't send it as NX part form. Also I am giving you a pic of history list.
And thank you
Part files should be compressed and sent as .7z or .zip files to be acceepted.
Do you want to say that the cross section of my profile should be a square or circle for getting proper part of construction?
I saw many part in praxis and working where that rule is excluded, and this steel I want to bend (0361 old designation) allows that bending. I am just trying to make good drawing for bending with a distance of bending lines and if you have some material for it (published tutorial or drawing) please share with me. You can send it on: firstname.lastname@example.org
thank for your time