Hello.

I am trying to design a part that is supposed to mate to an assembly that has an organic shape.

An assembly is made of overlapping parts and can be twisted around and I didnt design it.

How can I carry the surface of this organically-shaped assembly onto a part that I am making?

Is there a fast way to copy surface of an assembly so I can make a part around it?

I am also getting confused with part/assembly situation. I need to make a PART of a face of an ASSEMBLY.

A step-by-step or, preferibly, a video will be a good help. I am still fairly new to Solidworks. I have watched a video course but it didn't show  me everything.

Thank you for your time.