Erosion of MBP case and offset lid

Discussion in 'MacBook Pro' started by Puqq, May 12, 2012.

  1. Puqq macrumors regular

    Joined:
    Oct 18, 2009
    #1
    One of palm rests of my 2 year old MBP is highly eroded (7cm damaged edge, sometimes up to 1.5mm width new surface revealed, some .5mm deep erosion) due to sweat (?). The same surface appears to be more exposed by an offset top lid (lid is offset by up to 1 mm or so).

    My MBP is still covered by Apple Care. Do you think it's feasible to get a case repair / replacement? Had I known this potential risk, I would have bought a protective case and avoided the problem.
     
  2. ixodes macrumors 601

    ixodes

    Joined:
    Jan 11, 2012
    Location:
    Pacific Coast, USA
    #2
    I'm not aware of this being a frequent problem. You shouldn't have to cover it, that's a fact. It should be durable enough to use right out of the box. Of the seven or eight MBP's I've had, none have displayed this issue.

    The first thing that comes to mind is that you may simply have received one with a problem finish. I'd contact Apple, they've been exceptional when the circumstances allow. Let them inspect it and reach a decision.
     
  3. plagr macrumors newbie

    Joined:
    May 12, 2012
    #3
    I am an AASP

    That doesn't sound normal. I have seen lots of first gen unibodies and haven't noticed this.
     
  4. jdwagner888 macrumors regular

    Joined:
    Feb 4, 2011
    #4
    Sounds to me either you received a defective case or have radioactive sweat :p take it to the apple store, warranty or not they are great and will back up their products.
     
  5. miles01110 macrumors Core

    miles01110

    Joined:
    Jul 24, 2006
    Location:
    The Ivory Tower (I'm not coming down)
    #5
    Pitting of the MBP palm rests and especially the 90 degree edge on the unibodies is a common problem. You can try to get it replaced under Applecare, but don't expect it to happen. It's just the paint being loosened and subsequently chipped away.
     
  6. mac-collector macrumors regular

    mac-collector

    Joined:
    Apr 8, 2012
    Location:
    Europe
    #6
    You're right, because the aluminium used in the MBPs is anodised, sweat can 'erode' it away.
     
  7. alphaod macrumors Core

    alphaod

    Joined:
    Feb 9, 2008
    Location:
    NYC
    #7
    The term you're looking for is "corrode"; erosion implies somehow it's been shaped by wind and water.

    That said, it is entirely possible for the salt (among other ingredients) of your sweat can cause chemical reactions with the aluminium on the computer.
     
  8. thundersteele macrumors 68030

    Joined:
    Oct 19, 2011
    Location:
    Switzerland
    #8
    What paint?!? It's just a block of aluminum.
     
  9. miles01110 macrumors Core

    miles01110

    Joined:
    Jul 24, 2006
    Location:
    The Ivory Tower (I'm not coming down)
    #9
    No, it's not. It has a powder coat on it.
     
  10. lamboman macrumors 6502

    Joined:
    Aug 13, 2011
    #10
    It's powdercoated, as Miles said above. Just reiterating the point.
     
  11. sweetbrat macrumors 65816

    sweetbrat

    Joined:
    Jun 17, 2009
    Location:
    Redford, MI
    #11
    The MBP is not painted. It's anodized aluminum, which is different than painting or powder coating. It doesn't add a layer of anything to the aluminum; it creates a thicker layer of oxidized aluminum at the surface, which creates a more durable finish.
    http://www.aacoa.com/anodizing/process.htm

    Powder coating applies a dry paint to the surface which is then heated, causing the particles to melt and form a film over the surface. They may have some similarities, but they're quite different processes.
     
  12. Mr. Retrofire macrumors 601

    Mr. Retrofire

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    Mar 2, 2010
    Location:
    www.emiliana.cl/en
    #12
  13. mac-collector macrumors regular

    mac-collector

    Joined:
    Apr 8, 2012
    Location:
    Europe
    #13
    Why are you quoting me?
     
  14. MOKHAN macrumors 6502

    Joined:
    Mar 19, 2011
    Location:
    Toronto, Canada
    #14
    Haha, probably hit 'quote' on the wrong post.
     
  15. thundersteele macrumors 68030

    Joined:
    Oct 19, 2011
    Location:
    Switzerland
    #15
    Wasn't aware of that. I thought it was aluminum with a rough finish.
     

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