The trick is keepit dry.
I've cleaned up a couple of machines that way to museum exhibition standard and thirty years later they are still shining, just need an occasional dry dusting.
As for sand blasting normal sand never works, you always have to use the really fine sharp grit. And I don't mean what the builders call "sharp" sand.
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Ray at Wigan Pier
2014 A8L D4 4.0TFSI Gold (Sticker says "Beige") Can't leave you in a black smoke cloud anymore..
In progress, Nothing left to do.
Gone 2004 A8 D3 3.0 TDI. Ebony Pearl Black (with little bits of other colours and glitter)
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