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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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[–] 9 points 3 months ago* (last edited 3 months ago)

There is a JB Weld UV glue product that comes with a UV LED attached:

https://www.jbweld.com/product/superweld-light-activated

It's a blend, not pure UV resin, that will harden quickly where the light hits it but will also slowly cure without UV exposure, so the inner parts of the joint will harden over time.

I use this and I've found that it is almost as good as standard 2-part epoxy in most cases, and easier to use.

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