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Erosion of MBP case and offset lid

P

Puqq

macrumors regular
Original poster
Oct 18, 2009
117
0
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.
 
Puqq said:
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.
Click to expand...

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.
 
I am an AASP

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