Why not...

As you can see font is just curvated along the curve
so just take surface(s) as start and target and you will obtain perfect fit in all directions! ;)

Meanwhile it it clear. Tried it with a base line. Failed. With a base plane it works...

Thanks Pilou. But it is not wrapped...or just not ready?

...besides...how did you change so fast the text direction axis?

PS Speed is because i just record the "do redo undo"! ;)

So you don't see the mouse go to the icons and times to click! :)

Even that it's very speed naturally!
With the "Edit frame" (Options / Views (enable Show "Edit Frame") ) it's also very speedy!

Orientations of results depend of the place(s) where you click on surface(s)! (base & target)

And yes a "line" base can't be wraped on a surface curvated on 2 directions!
A "surface" base yes! :)

Hi Lara.

Watch the video on the links in my message, they are based on the method that was published above.
In the video, instead of pressing the done key, I replaced it with pressing the right mouse button.

https://yadi.sk/i/Iqgz1wWfLr8ezw

https://yadi.sk/i/Ruspmko-matIqA

https://yadi.sk/d/ptjocdCUPLJh6A

Hi Lara,

re:
> Ok - i got problems with the 3-axis-cnc machine where I intend to produce the ring.
> The idea is to make it with a polyline of the font. I created it. But...I cannot bend it on
> the surface. Is it possible that polylines cannot be formed on a bended plane?

You can use Flow in either "curve to curve" mode where you have a base line and a target curve (both being curve objects, no surfaces), or "surface to surface" mode where you have a base plane and a target surface (both being surface objects).

It looks like you're trying to go from a base curve but your target is a surface and not another curve?

For applying onto a surface you will need to use surface to surface mode which means you will need to make a base plane instead of a line.

If you're still stuck please post the .3dm model file that corresponds to the screenshot.

- Michael