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Any tips on plastic adhesives? Trying to repair headphones (slrpnk.net)
submitted 3 months ago by to c/diy@slrpnk.net
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Hi DIY!

My headphones of many years recently broke. My first response was to attempt to glue them back together with super glue (ethyl 2-cyanoacrylate) however that didn't seem to hold. Not even a little bit.

I then did a bit of searching and found that Sony often use ABS plastic in headphone manufacture, so presumably these are ABS. I then read super glue should work okay on ABS, however there seemed to be no bonding happening at all.

Do any of you have any tips for the best kind of glue or epoxy to bond these plastic parts back together and get the music flowing again?

I plan on wrapping the joints in thread afterwards, for additional durability. But first I need to get them bonded.

A close up picture of headphones with the plastic connecting the headband to one of the cups being snapped
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[–] 5 points 3 months ago (3 children)

Not sure i would use a plastic stapler/welder for something like this with small electronics but it is for plastic ... If you're careful it might work long term. Just be clean and accurate and don't leave pointy bits that could cut you. The staples need to be trimmed after and it would be best to melt more plastic over it probably.

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  • [–] [S] 2 points 3 months ago (2 children)

    Unfortunately there's a wire running through one of the broken pieces so heat is probably a no-go because I don't want to melt the insulation. Thank you though!

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  • [–] 4 points 3 months ago* (1 child)

    I think a deft hand could do what OP suggests without damaging the speaker wire. This would be the metal reinforcement you need combined with epoxy. Just sink the staple in far enough to work. Maybe two per side. Not too deeply as to roast the wire.

    Edit: Though if you do not own one, then that solution is out.

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