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.
Acetone can join ABS because it is a solevent for that particular plastic and will mix the two treated surfaces at the molecular level. It would be wise to add some additional material in the hollow area such as an epoxy putty (jb weld as suggested elsewhere), but it should create a stronger bond between the broken pieces.
There's a wire running through one of the plastic pieces so I think acetone is probably a no-go because of the insulation. I'll keep that tip in mind for future repairs though that don't have that difficulty, thanks!