Well cleaned and as shiny as a penny, that's how the restaurateur of an old-timer would like to see the body-work trimmings. A belt-sander which has a felt surface that also skims off material, is the first tool to be used. Only afterwards is the polishing done.
Those who have no experience in the sanding of expensive, and possibly irreplaceable trimmings, should perhaps try it out on something cheaper, either that, or leave it to the experts right from the word go.
The surface should not be destroyed by using too much pressure, on the other hand, too little pressure is not going to remove the scratches. The correct amount of pressure should be maintained for the polishing of the entire component.
Polishing is done, e.g., with a disc which mainly consists of natural fibers (sisal). Before touching the component to be polished, a certain amount of polish should be applied to the disc. Thus, the shine is generated.
In the case of an old-timer, polishing by hand may be worthwhile, particularly then, if the components are no longer to be had in an as-new state. Afterwards, the component looks like new. Only in a microscopic examination, can perhaps sections of the deepest scratches still be seen. 08/13