Good morning to all I would need advice on how to create the 3 rings of rendering then extrusion in sweep, I can not understand how to make the ring on this superifice that is too irregular.
rendering should start from existing geometries, so if you want exactly that result you could start from the same geometries, if you provided them.
Otherwise, if you could have three images in front/top/top/top views, you could put them in three sketches, then with a spline in a 3d sketch you could go to recalculating.