The general vase shape is a surface of revolution.

I would try subtracting the "pleats" negatives.

Can you form ONE of the long "pleats," the short pleat at the top, and the tiny pleat at the very top, to use as a cutting object?

Curve the one pleat trio slightly from top to bottom to match the curvature of the vase from top to bottom, maybe with flow.

Circular array the pleat cutting, and trim or Boolean difference, to remove part of the smooth vase.

Do you have a .3dm of one pleat trio?

- Brian

I tried a 32 sided polygon, an arc, copy and scale, and loft.
Too late to play any more today :-)
- Brian

Thank you very much Michael and Brian...
It's time to work for me !

The vase looks like an origami folded object.
It looks like 3 cones, or frustums of cones.
Maybe it is developable.

I did a simple pleat .3dm. Basically just triangles, non-equilateral tetrahedrons.
Fillet will work on it at .2 units.

After some fillet, maybe it could be bent or flowed, then circular arrayed?


- Brian

Hi Finema,

I have used Michael's surface and added the rest of volume.

It's not absolute prefect smooth, but maybe it helps you :-)



Mik

HI,
I'm here (see picture in attachment) and i can't fillet it now

@Mik
thanks for that
it's near i want but rounded and i don"t understand your technique...

Hi Finema,

re:
> I'm here (see picture in attachment) and i can't fillet it now

Yes with such very sharply pointed thin needle like ends it's not likely that you will be able to fillet stuff like that, it makes it very difficult for the filleter to put in corner junctures on such super sharp pointed things and also you've got very narrow areas so there would be only a very tiny amount of space for a fillet to fit.

You may need to trim away some empty space and use blends, or it might be better to build curved surfaces from the start like in the example I posted before.

- Michael

"or it might be better to build curved surfaces from the start like in the example I posted before."

yes it's better
Thanks Michael

Hi Finema,

>>i don"t understand your technique...

I've used sweep...



for rounded result you can try to use two curves start/end and rails connected between ends of these curves. I used only one curve and point ended rails.



The cyan curve is tilted in right viewport - half angle between perpendicular and transversal part of vase.



...then I jointed surfaces. Resulted surface was copied and scaled (0.99). I've created the solid via jointing lofted surface between outer and inner rim of surfaces and outer and inner basic surface of vase.

Hope this helps.

Mik

Thanks a lot Mik !