104
Any tips on plastic adhesives? Trying to repair headphones (slrpnk.net)
submitted 3 months ago by to c/diy@slrpnk.net
85 comments fedilink hide all child comments
 

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
you are viewing a single comment's thread
view the rest of the comments
[–] 8 points 3 months ago (1 child)

If it’s ABS (which most thugs are) try methyl ethyl ketone to melt it back together.

Just a dab of MEK will melt the plastic, but it evaporates/dissolves quickly. Once you apply it press the pies together firmly for a few minutes, then let it cure for a while after that. The bond should be as strong as it was from the factor. Then if you want apply some JB weld for extra strength.

  • permalink
  • fedilink
  • source
  • hideshow 1 child comment
    •