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Any tips on plastic adhesives? Trying to repair headphones (lemmy.nz)

submitted 6 days ago by punksnotdead@slrpnk.net 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.

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[–] SaveTheTuaHawk@lemmy.ca 13 points 5 days ago

Glues are fucking useless unless you have a large surface area to bond. Headphones don't use ABS, too brittle. The use polycarbonate on the hoop that breaks and that doesn't bond well with glue.

Hot staples are an option because the embed steel wire into the plastic. These kits are cheap now and very common in automotive plastic repair because glue is universally useless.