What turns the aluminum white?

Discussion in 'MacBook Pro' started by philipdistefano, Feb 3, 2010.

  1. philipdistefano macrumors newbie


    Jan 18, 2009
    I've been having this white spot on my mid-2007 MacBook Pro's palmrest for about a year, and I cannot figure out what it is or how to get it off. I usually clean my MBP with a Mr. Clean magic eraser (which works wonderfully, by the way), but that or nothing else will get this white spot off.

    This makes me think that I touched my computer with some sort of chemical on my hand that reacted with the aluminum and discolored it. Does anyone know what could do this and if there is any way to get it off? There's no way I'm the only person this has happened to.

    Thanks. :)
  2. DeusInvictus7 macrumors 68020

    Aug 13, 2008
    Kitchener, Ontario
    Well metal oxidizes, so it might be from sweat or something from your palms? I'm not really sure maybe someone can clarify that, but that would be the only thing I could think of.
  3. Cali3350 macrumors regular

    Feb 16, 2009
    Your sweat likely has a high acid concentration. Your wrists sweat, it hits the palm rest, it discolors it.

    Hasnt happened to me on a mac, but has happened to me on MANY other laptops.
  4. philipdistefano thread starter macrumors newbie


    Jan 18, 2009
    While I won't completely rule it out, I don't think it's sweat for a few reasons:

    1) It just appeared one day; it wasn't gradual.
    2) It's just one small spot less than the area of a dime.
    3) It's not really where my palm rests.

    I do think my sweat is a little acidic though, as the paint has pitted on my palmrest before and Apple replaced it, but I think it is starting to do it again.
  5. palmerc2 macrumors 68000


    Feb 29, 2008
    Los Angeles
    I don't mean to steal your thunder here, but maybe this can be an option for you if they have one for the 'multibody' design?


    I want to know if anyone has had any experience with this, I only plan on using the palm rest part - not the trackpad. Does it leave any sort of residue on it? According to the specifications it doesn't, I just want to know if anyone has had any "hands on" experience with it. Finally, what material is it made of???

    I just want to get all the facts before I get a new MBP :) !
  6. GSMiller macrumors 68000


    Dec 2, 2006
  7. killerrobot macrumors 68020


    Jun 7, 2007
    Does it look something like this?

    You've most likely rubbed off the "paint", outer coating, (I have no idea what it is actually).
    I had a white spot on my 2007 MBP too. I tried cleaning it one day and the coating rubbed off even more. I figured I should stop there.

    EDIT: Here's a bigger pic. Still not great quality. The iPhone loves to "optimize" photos.

    Attached Files:

  8. philipdistefano thread starter macrumors newbie


    Jan 18, 2009
    I can't tell since the picture is so small, but I think that's what mine is as well. :(

    My Apple care lasts until this June, so if it gets any worse, I'll bring it in and have the palmrest replaced...again (third or fourth time...).

    Thanks for the replies so far everyone.
  9. HappyDude20 macrumors 68020


    Jul 13, 2008
    Los Angeles, Ca


    ...You asked.

    Edit: I say this guessing if it doesn't come off it might be it. Don't ask me how I know though. Seriously. Dont ask.
  10. killerrobot macrumors 68020


    Jun 7, 2007
    I attached a bigger pic for you.
  11. PacMookBro macrumors regular

    Jan 31, 2007
    There is no way? The ultimate solution for you: http://www.colorwarepc.com/p-180-macbook-pro-g2-15.aspx
  12. Incrimn8r macrumors newbie

    Jul 10, 2008
  13. sycho macrumors 6502a


    Oct 7, 2006
    Why would you use a Magic Eraser to clean your computer?!?!:confused:
    That is probably why it white now. The Magic Eraser ruined the trim in my car, so I would never use it on my computer.
  14. FearlessFreep macrumors 6502a

    Jul 15, 2008
    Northern Virginia, USA
    The Magic Erasers are abrasive. Hint: That's why they clean very well. It's likely you've rubbed off some of the anodized coating as others have said.

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