Hmmm´ ... I thought I could get the crease. And then do a flow. But the oval gives me problems ...

Hi,

Have you seen, your oval is not a surface but a joined surface.
Flow use a surface or curve.

So you can use 2 Flow with half Surfaces Start / Target! (Top / Bottom)

Trim by half your start Surface and curves

That is the theory but seems something don't works

Seems curves resulting are not enough curvated and don't snap the perimeter! :(

Hi,
is attached what you need.
Cheers
Barry

Hi Mala, so a couple of things there - like others mentioned above your curved oval piece is made up of 2 faces, while surface to surface flow works only from one surface to another surface. You would probably want to rotate the circle used to generate the torus so as not to have the closed surface seam running right through the middle of where you want to do the flow.

The other thing is that it isn't really using the oval outline exactly, flow uses the rectangular "underlying surface". The oval trim boundary will be used just to shrink the rectangular underlying surface down so that it fits around the trim boundary.

So because of that you would generally want to make a rectangular plane as the base surface.

- Michael

Hi,
is attached what you need.
Cheers
Barry

Barry, thanks, yes. But the oval is missing. The oval hat to receive a bumyp surface. But this could be the easiest way - I try it out. Your model show some not so clean surfaces left and right...
Trimming the oval not at beginning of the drawing process...but at the end.

Hi Lara,
I think the issue is you have lofted the curves & they need to sweep the arc curve .
I have added the ellipse to the model now..
The blue model was done with a sharp ridge as an example if that was needed.
Barry

Barry, I used your model and cut it. I didn´t make the loft splines. Hmmm´...
Generally I fail doing fully simple things: Adding points in order to get a sharper edge for the crease.
When I use add points the circle changes it´s line. Do I use the trim tool, moving the points no soft edges are generated...
How do I make additional points for smoth and undeformed splines?

Hi Lara,
the first post only contains the curves how did you construct the solid from them loft or sweep ?
Select all the circles and sweep the arc.
How was the last model I posted ?
To add more points use rebuild points option.
I used 64 points.
You can always just add tangent circles to the main circle
and trim to get a sharp point that’s what I did with the blue option.
Cheers
Barry

Rebuild = Press Tab and write rebuild (ReBuild even RebuilD but without Space) before or after select curve(s)
or make a ShortCut as usual

ok - the secrets...of rebuild. I thought until now it is only for reduce a complex structure.
should´ can go on...best, MALA

Thanks for that family...

Hi, I got an construction/modelling modification.
The oval is not horizontal - it is turned for some degrees.
I tried some things but I failed making a crease that is turned in the oval direction.
Main idea was modelling it on the oval plane and then operate with the flow command...hmmm´...

Hi Mala, I'd probably put in a plane as the base surface as described above, keep your target surface like it was before, only enlarged if needed and instead rotate the base objects in relation to the base plane instead of trying to rotate the target piece.

What you're running into is that surface to surface flow works on the "underlying surfaces", and if you show the underlying surface of your target surface that was created by trimming you should see that underneath the trim boundaries it is still the same underlying surface as before. Basically the target surface trimming will not have an effect on flow since it does not work by following trim curves, it works on the underlying surface. So trimming a rotated oval out will not introduce rotation. But rotating the base objects in relation to the base plane will.

- Michael

If i take 2 inclined oval surfaces Start / Target

Thank you Michael for that step. I did not yet try that step because I thought it is the second one. The first step I already failed was the sweep of the surface. I never did it with a sourrounding profile (oval) and that 3 splines. How to do that?

Hi Mala, I mean something like this, I used Trim with the Isocurve option to trim out a section of the torus. Then the rotation is introduced by rotating the objects to be deformed by the Flow to be rotated with respect to the base plane:





- Michael

Sorry for that confusion - Pilou, you made that suggestion I thanked Michael for...(new messages are shown for me alone on a webpage and then I do not see what was before...confused...)

Ok - this step is clear for me. What I do not know is how to make the topografy/surface out of the curves and the oval?

Hi Mala, it can be difficult to get a good surface with cross sections running in one direction like that. It can get a pinched type shape at the tips as the profiles collapse down to a point.

You might try a more radial type construction, maybe a loft with loft style = "loose" through sections like this:







- Michael