How to round a polysurface into a curved shape?

how to round a polysurface into a curved shape ?

I tried to use “bend” and “transform along a curve” but you still didn’t understand, I still don’t understand what I’m doing wrong??

palka.3dm (711.4 KB)

Can’t you just pipe that curve with a start and end radius that’s bigger & smaller? Also - you need to upload files if you want help.

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I think what @ftzuk is suggesting should get you to the result you’re after.
Select your curve, type “pipe” and you will be prompted to enter the beginning radius and then the end radius.

If you want to use “flow” draw a line from the base of your cone to the tip. Select your cone, type flow, select your line you just drew, and then select your curve.

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palka.3dm (711.4 KB)

try sweep 1 rail rather than trying to transform your polysurface.
HTH