Hi there! What's a good DIY cleaner/paste to make to remove rust

Rita.gindi
by Rita.gindi
Hello fellow DIY warriors! I have a beautiful french style serving cart on wheels with a marble top. The elaborate frame is brass and a pewter type metal. It has formed an ugly rust on the metal I tried Brasso, no results. Any genius ideas? I guess living in South Florida's humidity was the culprit! Thanks!~
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