Aluminum corrosion

Discussion in 'Boat Yard Basics' started by Swamp, Apr 29, 2011.

  1. Swamp

    Swamp I Love microskiff.com!

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    I've got some aluminum with deep pitting.  How do I clean out all of the corrosion before painting?  Unfortunately grinding the pits out is not an option.

    Thanks
    Swamp
     
  2. Brett

    Brett > PRO STAFF <

    wire brush...had to refinish an aluminum mast on an old sunfish
    time consuming pita... :'(
     

  3. Swamp

    Swamp I Love microskiff.com!

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    That is the only thing I know of either. I was hoping there might be a chemical treatment like Phospho is used for steel. Oh well, luckily there is not much.

    Swamp
     
  4. firecat1981

    firecat1981 BBA Counselor

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    Medium blasting! Think they use crushed walnut shells for aluminum.
     
  5. Swamp

    Swamp I Love microskiff.com!

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    Humm, had not considered that one. I think I still have some crushed walnut shell too. Now I just have to find my blasting gear.

    Thanks

    Swamp
     
  6. DuckNut

    DuckNut Brandon, FL

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    Trisodium phosphate or TSP (Lowe's, HD). Mix it well and and scrub then rinse with water and rinse/wipe and then do it again and once sry ready for paint.
     
  7. jms

    jms don't let common sense get in your way

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    best option is media blasting - followed by chemically etch priming - followed by epoxy coating...
     
  8. Swamp

    Swamp I Love microskiff.com!

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    Thanks everyone.

    Swamp
     
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