Here is an attached part that I made with the smoothing function, so far nothing too complicated.
Only, for the sake of convenience, my manufacturer asks me if it has been possible for me to provide him with a DXF file of this part IN UNFOLDED STATE!!
I tried the convert to sheet metal function, but I think the part is too complex for solidworks or I don't have to use the correct options of the function
In any case, thank you for your answers, I was able to provide him with a DXF unfolded part of my basic part using the folding function that I didn't know and that looks really good to me.