I am working for a company that is looking to set up a very large scale 5-axis mill. We are in the business of producing large scale public artworks. Extremely high quality stainless steel organic surfaces, hand polished to a mirror finish is a requirement. The process that has been proposed by an outside company is to cast ruff blanks, machine the surface at a very high resolution, weld the multiple parts together, and then finish the surface with a number of steps concluding with hand polishing. We realize the complexity involved in this process and at this stage we are simply looking for research resources and advice. If anyone has done any research or has experience in this area, we would love to hear what you think!