skyscraper wrote:
^^^ Is it just me or is there a lot of dust on the inside of the panel in the bottom two photos?
It's not dust, I don't think, it looks to be finishing marks left by a grinding pad when those parts were fabricated.
It'll be a laser cut plate, folded and formed, then welded together at the seams and dressed off. It's just left unpainted inside, I guess, so the markings on the material are still visible.