Hi Tony, I've attached a version using the method of putting in a blend curve to make a smooth path and then forming a cutting surface.

Once you put in the blend curve, then the curves are not all on the surfaces anymore and they are not planar either so they can't cut by projection well either.

But by forming an extended parting surface then the parting surface can be intersected. So in the attached versions the parting surfaces are these pieces, see how they extend out a little ways so they can cut the main body surfaces, this is a method that you can use when the shape bends around in such a manner that there is not a single 2D view that can be used to form all the cutting profiles.

So instead of 2D profiles you use a 3D surface as the cutting object. You can use 2D profiles and project them to form most of the curves to work with though.






- Michael

Thank you so much Michael :)

Or I guess if the Top profile curve was longer it could go like this. You have to build an extruded surface for the cutting object instead of just using the curve because you don't want to cut all the way through:











Then Chamfer:



- Michael

3DM file for the last one above.

I hope I succeeded .... what do you think? .... obviously the two sides now I have joined them in one piece .... in what I am attaching they are divided and then joined .... now I have made a single piece as suggested by Michael and Pilou

Looks pretty good to me!

- Michael

This last method of yours is also very nice .... thanks again Michael :)

You're welcome Tony! So kind of the key strategic things is to establish the full extended shape as the base for this kind of thing.

- Michael

Else another method for bend something...the Flow function very polyvalent !

Can be make some deformation but...

Thank you Pilou for the support