Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Painting Galvanized metal
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Old 07-21-2002, 08:48 AM
johnny 1986 johnny 1986 is offline
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A real easy and cheap way to etch galvinized metal is white vinegar from the grocery store. It will not work on aluminum and is useless on mild steel. For aluminum use alodine. For mild steel use phophoric acid. Dupont and PPG both sell these chemicals under a "trade name" Read the labels to make sure you are using the appropriate chemical for the application. Back to the original question, scrub the galvinized metal lightly with white vinegar and scotch-brite and rinse with tap water and dry with clean cloth. Do not let air dry. Prime with a catalized type primer only. Lacquer based primer usually will work but it will definitly fail sooner than a catalized type. Why take the chance. Lacquer type primer went out with the high-button shoes. Good luck.
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