[LargeFormat] Cleaning Metal

[rstein]

Dear Friends,

     Let me inject a serious note to the list.

    There. Keep that on the screen for the next half hour and don't have any
hot drinks until lunch. Yes, it always swells and bleeds like that and no,
you don't look funny.

     Now to the real question. Verdigris.

    I have a couple of pairs of turn-of-the-last-century opera glasses that
are family heirlooms. They have mother of pearl inlays and gold work, but
there must be some brass in there as there are also some green corroded
areas. Well, that is a capsule commentary on the family, really, but I want
to clean them up for use as props in the studio.

     Does anyone know what can be used to clean this sort of thing? I would
like to avoid disassembly if possible.

    Is this also applicable to older brass-barreled lenses? I have a couple
of oddities given to me that might be usable if they could be salvaged.
Thanks in advance for the technical assistance.

     Uncle Dick