Can I make galvanized steel look old and worn?

Tone
by Tone
I just bought this Hyllis shelf unit from Ikea, and I want to make the metal look old-ish.
I have read that if you soak zink/galvanized metal in vinegar, it will get that old look. But I can't just as easily soak a whole shelf unit in vinegar, now can I? Does anyone have any clever tips on how to make new, shiny metal look old?
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