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How would I fix a cracked laptop lid? Answered

Hello. I have a laptop that's several years old. During its service, the lid has cracked near the hinges. The hinges themselves are intact, but the bottom of the lid is almost completely cracked along the length.

The question is: how would I fix it, without causing permanent damage, cheaply and make it last at least 2 years?

I can work with wood, but not metal (no equipment for that). I'm on tight budget so I cannot afford to spend more than 10 GBP. I'm located in London.

Does anyone have any suggestions?


I wouldn't trust me because i've never tryed it before but using a wood burner might work to melt and seal up the plastic...

look on ebay. you may very well be able to get a new lid.

Others have given good answers, but also I suggest greasing up the HINGES or otherwise taping up the hinges to assure GLUE does not get into the hinge. You don't want to glue the lid in the SHUT position! Also, while the glue dries, you might consider placing the lid in the "open" position just in case some glue got into the hinge. At least you could use it if it gets glued in the OPEN position. Greasing the hinges will help assure glue does not stick to those surfaces, and the hinge will work after the glue dries.


6 years ago

I agree with Ork...patch it with some plastic pieces.
Cut two pieces of tough plastic, ABS would work well, about twice as wide as the distance from the furthest part of the crack to the point where the radius starts and each long enough to fit between the hinge gaps.
Sand the paint off the lid where the patches will be placed. Press the cracked pieces back into their original position and sparingly add a little super glue to hold them in place.
Rough up the patches and the lid with some coarse sandpaper and then clean off the residue with rubbing alcohol.
Choose one of the cracks to repair and lightly coat the mating surface and the corresponding part of the lid with epoxy or JB Weld. Join the two and lightly clamp or weight the patch trying not to squeeze out too much of the epoxy.
When that patch is completely bonded and the glue cured proceed to repair the second crack.
I would give the repairs a good 12 hours before trying to raise the top.

Epoxy, yes.


First I'd try to disconnect the hinges so that you can fit the pieces back in perfect alignment and try super gluing them back together. I've had great luck with that.

Then if that didn't work use fiberglass cloth and resin to bridge the break. Not pretty but very usable.

It's not going to look pretty but go to halfords and buy some fibreglass car body repair resin (NOT body filler) They may sell a kit.

You will also need some glass fibre mat mix according to the instructions and impregnate the mat with the mixed resin you can use a cheap paint brush for this - you will need to throw it away after..

Work outside because of the fumes. Smelly!!

This will harden and strengthen the lid. You can sand the finish down somewhat with wet and dry paper from the same place.

Should cost about £5

Best suggestion I've got is to "sister" it -- cut a piece of something (metal or plastic) as long as the crack, and adhere it to bridge the crack using a thick adhesive. That will take up the stress and support the case, while (if you're careful) not squirting more than a tiny amount of adhesive _into_ the crack and thus hopefully not impeding disassembly should that become necessary.

Of course whatever you use has to be thin enough and/or well-enough placed not to interfere with opening the case, while also being non-stretchable enough to act as reinforcement. And the glue has to hold tight rather than letting the reinforcement slide; I'd suggest something like an epoxy. (You might want to do something to roughen the surface of the PC case, to help the epoxy get a good grip.)

Then there's the challenge of making it look like something other than a quick-and-dirty patch.... but I'll leave that as an exercise for the reader.