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Hey, scocope - Fortunately, I'm not having to remove a lot of brass on the delicate parts. Those photos are extreme close-ups. The pitting is probably less than 1mm deep on the scope itself. Consider that in that photo, the scope is less than 1" in diameter. Also, the scope is very thick. The lens shield is much thinner, and it turned out fine.
Also, I'm finding that only the exposed pieces were pitted. So all of the brass that I'm removing is superficial, and doesn't affect the function of the piece at all. Before I got started, I looked at this thing in detail to determine that I could restore it properly.
I've had a go at some of the worse areas with 600 damp. I'm hesitant to go coarser than that, though. Brass is really soft, and I don't want to score it. 1000 is doing a good job in most places. I'm then doing a fine sand with 2000 grit, and will finish off with some cream polish.
I'm debating whether I want to clear it when done, but I'm not worried about that right now. I may just keep a nice polish on it. I'd hate for it to return to its current condition, though.
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