Work in progress. Restoration of a reflectors set Ducellier from the 1930's in brass. The thickness of the sheet is very thin, no more than 0.5 mm. It's a meticulous work and a good experience, close to the trades of factor of musical instruments. The very deep scratches are filled by brazing, the others sanded. the dents are straightened and the whole polished before being re-silvered.