How can we get a single surface from a complex mesh

I just think you can’t. But it is surely possible to make 3 or 6 surfaces.
And why on earth not giving the adress of previous discussion. Traceability is important


To make a surface you need a sort of net of U and V coordinates. Extract each mesh representing this “net” get the coordinate and with these point make surfaces with the component “surface from points”.

If you need to offset your shape here are some examples: