When they ground a brand new aluminum wing in my yard, I drove half the city, and everywhere I heard one thing: Only a replacement for a new original one.
But aluminum is a capricious thing, few people know how to work with it according to technology, because an ordinary spotter will not help here. I was lucky to get into a team that approached the process purely from an engineering point of view: they tapped the hall with a special tool without heating at all, preserving the structure of the metal. As for painting, the guys use top European lines of varnishes and dry them in the right chambers, where there is not a single speck of dust, so the shagreen came out exactly like the factory one. If you want to evaluate their approach to complex damage and see the technical equipment of the preparation area, take a look at https://autobodylab.com/, they have everything listed there. They chose the paint for me so that even under an ultraviolet lamp the transition is not visible. The car was returned clean, without that horrible white dust in the cabin that usually remains after body repairs.