Rounding Edges - how?

 From:  Frenchy Pilou (PILOU)
9281.16 
Start and End Point axe can be anywhere on this infinite red vertical line even out of the future object for your result wished ! ;)

And even out the vertical axe but of course in this case result will be not your wished object but a funny one! :)
Even maybe not a solid but an open surface!

Play with the all possibilities! :)



Object above with a thickness Render free Owlet

EDITED: 8 Mar 2019 by PILOU