Preventing Pitting and Corrosion...

Discussion in 'MacBook Pro' started by emaja, Aug 17, 2012.

  1. emaja macrumors 68000

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    #1
    Apparently there is something in my body chemistry that reacts with the case of my MBP that causes it to corrode and pit. It is not a hygiene issue either and I am not alone as I have read in many places that this happens to others. There is pitting where my hand hits the front edge of the palm rest as well as on the bottom where my thumb touches the bottom of the case.

    I have not seen a wrap that covers the edge. I have heard about using tennis racket grip wraps but those don't stick. I have also seen people use clear packing tape but I am hesitant to try that.

    Any suggestions?
     
  2. GGJstudios macrumors Westmere

    GGJstudios

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    May 16, 2008
    #2
    There are skins that you can put on your MBP to protect it from such things. There are dozens of threads discussing these options.
     
  3. AZREOSpecialist macrumors 68020

    AZREOSpecialist

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    #3
    The issue is most likely being caused by electrolysis and improper grounding. Have you ever noticed when you have your MBP plugged into the wall using the 2-prong plug that you can feel a little buzz of current if you touch the case? That doesn't happen if you use the 3-prong plug. The slight flow of current using the 2-prong plug may be enough to initiate electrolysis with your sweat, which will steel ions from the MBP case causing the pitting you describe.

    If you have to use the machine while plugged-in, use the 3-prong and that should stop or slow the problem until you get a case.
     
  4. emaja thread starter macrumors 68000

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    #4
    I thought about that but it is a newer building and there are 3 prong outlets throughout.

    No. None of the other solutions wrap over the front edge. They will cover up to, but not over, the front edge. I am looking to literally wrap over the edge not just cover the palm rest.
     
  5. miles01110 macrumors Core

    miles01110

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    #5
    This is not the cause. The paint on the Macbook Pro chassis can and does wear off over time, especially on the sharp unbeveled edge of the top case.

    You're not going to find anything that will do more than delay the inevitable. Palmrest covers like the Moshi placed over the edge will last days or perhaps weaks before the sharp edge cuts through, leaving you at square one.
     
  6. GGJstudios macrumors Westmere

    GGJstudios

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    #6
    That's not true. Speck cases cover the front edge, as do others.
     
  7. emaja thread starter macrumors 68000

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    #7
    Even those do not wrap fully up and over the front edge. It come over the bottom and covers to front that faces the user but it does not then wrap up and over to the palm rest.

    I didn't think there was paint on the case. I thought it was aluminum. Maybe a protective coating, but didn't think paint. How useless is it if that coating doesn't protect it from pitting?
     
  8. GGJstudios macrumors Westmere

    GGJstudios

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    #8
    You can install a Speck case and a palm rest skin. You can completely cover your Mac if you choose, but it appears you're resistant to the idea of such a solution, even though they have worked well for many others.
     
  9. emaja thread starter macrumors 68000

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    #9
    I apologize if I seem resistant. I just don't want to buy things and find out that they don't do what I need them to do. Sorry if I seem ungrateful for the suggestion.

    It seems to me that the combo of a case and a Moshi skin covers most but not all. The leading edge looks to be left exposed. Is this a combo you have seen and if so does it leave any gaps?
     
  10. GGJstudios macrumors Westmere

    GGJstudios

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    #10
    These options are discussed in detail in hundreds of threads on this topic. Here are just a few that discuss Moshi, Speck and other options:

    Macbook Pro Bags, Sleeves, and Cases Thread
    Hard Case Scratch? Moshi and Incase?
    Maintaining your MacBook Pro Aluminium UniBody
    What kind(s) of protection do you put on your Macbook Pro?
    [REVIEW] Incipio Feather: ultralight hard shell case for the MacBook Air
    Skin under the Speck case anyone?
    MacBook pro case/skin
    to keep incase hard case or not...hmmm
    What's the wear and tear like?
    Pitting
    Best protective gear for 2011 MBP? 15"
    Is pitting really an issue?
    Protecting your MBP.
     
  11. T5BRICK macrumors G3

    T5BRICK

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    #11
    There is no paint on the MBP chassis. It is anodized aluminum.
     
  12. emaja thread starter macrumors 68000

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    #12
    While I appreciate the effort, none of those threads offer or describe what I am looking for. They all leave a gap. I want no gap.

    I guess I'll have to accept that there are no products that do what I am looking for.
     
  13. miles01110 macrumors Core

    miles01110

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    #13
    No, it is not. Clearly you've never worked with anodized aluminum or this would be obvious.
     
  14. T5BRICK macrumors G3

    T5BRICK

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    #14
    Sorry, but I'm under the impression that it is anodized. This is based on a keynote I saw a few years ago, where Steve Jobs stated it. I guess he could have been wrong. Unfortunately I couldn't find it, but while I was looking, I came across this. It claims that the unibody is media blasted.

    Either way, it isn't painted.
     
  15. hakuin macrumors regular

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    Jul 30, 2010
    #15
    Did you find a good solution to this problem? I just discovered a line of pits along the front edge of my MBP as well and have put masking tape over and along the edge as a quick fix.
     
  16. emaja thread starter macrumors 68000

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    #16
    I bought an elago PALMREST SKIN and wrapped the bottom edge with some Scotch tape - the name brand tape. It seems to have a different adhesive that doesn't leave any residue when removed.

    So far - so good.
     
  17. hakuin macrumors regular

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    Jul 30, 2010
    #17
    I think I know the stuff. Thanks for the tip. My masking tape works without leaving the adhesive but does tend to slip, I think the Scotch tape should be better for that.
     
  18. roxxette macrumors 68000

    roxxette

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    Aug 9, 2011
    #18
    Cant be media blasted, blasted finish gets uneven over time (parts shine/tarnish? more) specially in the places where is touched more.
     
  19. Luxo macrumors newbie

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    Sep 24, 2012
    #19
    You may want to get that looked at.
     
  20. roxxette macrumors 68000

    roxxette

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    Aug 9, 2011
    #20
    Its normal, sweat hands (salt), happends to me also :)
     
  21. FuNGi macrumors 65816

    FuNGi

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  22. Dangerous Theory macrumors 68000

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    UK
    #22
    Best thing to do is just have a long sleeve that rests over the edge so your hand doesn't touch it.
     

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