I have a year-old MBP, and when I am working on it for some time, and go to reposition the monitor/lid, I get this horrible *CRACKING* noise like a piece of plastic being bent and snapped?! 
As far as I know the entire case is aluminum, but I'm not sure what the black hinge part is made of.
To me it is probably just wicked friction building up between the aluminum base and the black hinge part - which I'm thinking is plastic - and probably is doing no harm.
However, at the least it is annoying, and at worst I worry something might actually snap sometime?!
Normally such a crack/creak calls for some good ol WD-40, however that probably isn't a good ideal on my precious laptop!!
Any ideas how to fix this issue, and help the longevity of my MBP?
Sincerely,
Debbie
As far as I know the entire case is aluminum, but I'm not sure what the black hinge part is made of.
To me it is probably just wicked friction building up between the aluminum base and the black hinge part - which I'm thinking is plastic - and probably is doing no harm.
However, at the least it is annoying, and at worst I worry something might actually snap sometime?!
Normally such a crack/creak calls for some good ol WD-40, however that probably isn't a good ideal on my precious laptop!!
Any ideas how to fix this issue, and help the longevity of my MBP?
Sincerely,
Debbie