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There's some surface rust ontop of one of the chassis. What's worked for cleaning rust off chassis? I don't want to use steel wool, because I can see little metal bits getting in everything. I also don't want to use really rough sandpaper or a wirebrush that would put really visible scratches in the chassis. Maybe a little wet sandpaper 240 grit or so? Or what else works?
I might just sand and paint those rusty tube shields, and repaint the power transformer, but I'd rather not paint the chassis itself.
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