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orvn

macrumors 6502
Original poster
Jan 11, 2011
260
0
Toronto, Canada
So I stripped a tri-wing when replacing a Macbook Pro (13" mid '09 unibody) battery. I do have a small triwing screwdriver, but this screw had been tampered with before.

I tried using a rubber band, but it just broke through.

t8tatw.jpg
 

iThinkergoiMac

macrumors 68030
Jan 20, 2010
2,664
4
Terra
That's some serious damage, how did you manage that?!

Get a replacement philips screw of the same thread and length and use that instead.

EDIT: Which screw are you trying to replace, the one on the battery, or the one that's been stripped to a complete circle? If it's the second, your only choice is to drill it out to the point where you can remove the battery and then replace it after that.
 
Comment

Macman45

macrumors G5
Jul 29, 2011
13,198
133
Somewhere Back In The Long Ago
Whatever You Do

And I think the Philips screw is the way to go......BE CAREFUL. This could easily end in disaster if too much force is use or ( the screwdriver slips) if you can't get it to bite, make a small pilot hole using a steel awl or similar.
 
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lippyt

macrumors member
Aug 14, 2010
36
0
I would use a SOG tool to fix this. Best bet is to find a sharp tipped plier to remove the screw.
 
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nippyjun

macrumors 68000
Jul 26, 2007
1,531
205
I would cut a slot on the top so,that I could use a regular flat tip screwdriver to remove it.
 
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orvn

macrumors 6502
Original poster
Jan 11, 2011
260
0
Toronto, Canada
So my awesome wife surprised me and dug the screw out for me. She dug a moat-like trench around the screw with grooming scissors (the little ones that come in nail cutting kits) and then was able to get a firm enough drip to unscrew it with small utility pliers.

Fortunately, the underlying surface was plastic, not the core of the lithium battery- otherwise a fire might have been ignited!

2n666nt.jpg


15n2cll.jpg


That's some serious damage, how did you manage that?!

Get a replacement philips screw of the same thread and length and use that instead.

EDIT: Which screw are you trying to replace, the one on the battery, or the one that's been stripped to a complete circle? If it's the second, your only choice is to drill it out to the point where you can remove the battery and then replace it after that.

I was trying to remove the screw that's still inside the socket. The other one is just there for the sake of comparative example.

A 2009 MacBook battery should have lasted longer than this.
PS watch out for metal filings while drilling.

Well, my battery kind of exploded into a slightly more bloated version of itself, applying pressure to the aluminum housing and trackpad. Also it's three years old and I use my machine like a beast.

I would cut a slot on the top so,that I could use a regular flat tip screwdriver to remove it.

That's an awesome suggestion, didn't get to it, but will know for next time.

I think using a much thicker rubber band might have worked also, I just couldn't find one

strippedscrew01_rect540.jpg
 
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Lolito

macrumors 6502
Mar 20, 2013
397
34
here
where can i buy some new tri-wing bolts? perhaps there are other bolts with same dimensions but without the tri-wing head?
 
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