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Painting galvanized steel & vinegar

Discussion in 'The Hokey Ass Message Board' started by 1929rats, May 18, 2009.

  1. 1929rats
    Joined: Aug 18, 2006
    Posts: 702

    1929rats
    Member

    Guys,

    I have finished fabricating and welding togther a nice little trailer. For the fenders, I purchased some pre-made jobbers from a boat supply company called "overtons". Trimmed these to size and welded them on. These are galvanized (grinded off the galvanization before I welded them at the bottoms).

    I know paint doesnt stick well to galvanized steel/fenders, so, what I was going to do is sand then down with a fine grit disc, and them rub them down with "straight vinegar".

    I dont know where I learned of this - or heard this (probally my dad), but I seem to remember this old tale/trick being what worked (wiping the galvanized work down with vinegar before painting).

    Anyone also hear of this, or any other recommendations?

    Thanks,
    Pete
     
    Last edited: May 18, 2009
  2. Having been around the paint business most of my life all the contractors I delt with on a daily basis used apple vinegar on galvanized gutters with good results,,,without,the paint was peeling in a short period of time. HRP
     
  3. Shifty Shifterton
    Joined: Oct 1, 2006
    Posts: 4,964

    Shifty Shifterton
    Member

    Applying acid in this case is a lot like wetting wood down before sanding to "raise the grain". Except acid actually eats the grain edges away to create the roughness. If you follow it up with a bunch of sanding you'll negate the effect.

    Good luck
     
  4. hotrodjohnny77
    Joined: Jun 1, 2008
    Posts: 264

    hotrodjohnny77
    Member

    wipe it with acetone and use a zinc chromate primer in the can and top coat with what ever.

    Jon
     
  5. RoadkillCustoms
    Joined: Jul 10, 2008
    Posts: 270

    RoadkillCustoms
    Member
    from Mesa, AZ

  6. 19Fordy
    Joined: May 17, 2003
    Posts: 8,313

    19Fordy
    Member

     
  7. luckyuhaul
    Joined: Jul 11, 2005
    Posts: 182

    luckyuhaul
    Member

    Overtons' is a great vendor, I bought a 12 gallon boat fuel tank from them last year to get a Jeep rolling. Free catalog, lots of neat stuff for hot rodders'. Fast shipping and reasonably priced.
     

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