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Broken piece in headband

This panel-like part in the left side of my Toshiba RZE-BT1200H headphone suddenly broke; it appears to help in keeping the headband length fixed when I'm not adjusting it, because now that side keeps slipping out of place. Is there a way to fix it?

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It's on the inner side of the headband in the above images; the broken part is right next to my thumb in the 2nd image. I tried to get as much of a clear shot as I can.

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If they are still under warranty, pursue that option. If you want to try a repair super glue probably wouldn't hold, but there's a version for pvc that might. PVC is commonly used in headphone manufacture, but that might not be the case here. Plastics and the adhesives that work on them vary, for example the plastic that many adhesive come in is pretty darn hard to glue with anything... point being PVC adhesive won't work with vinyl and so on. Liquid exopy might or might not hold and would probably be unsightly (you'd be the judge of whether that matters) molding epoxy putty around that break, if it doesn't impair function might suit you. For the prettiest repair that will hold under stress you need to identify the plastic and use a solvent adhesive made for it. Say, PVC gorilla glue for pvc. If going by trial and error you can test in a small hidden spot to see what works before making a mess with the wrong adhesive. 3M scotch weld is a good choice if you don't know what plastic it is but it is pricey. I'd tell you where to buy a replacement but couldn't find any.

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If you want to put more time and effort in you could use the pieces to make a mould and recast them (matching for both sides) you might even figure a way to add more RGB, be sure they can dissipate heat though or they won't last long. I dont hav a 3D printer so I cant say whether that might also work, but maybe.

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I couldn't find 3M scotch weld, but I found a brand of adhesive gel that's supposedly stronger than superglue and works with "virtually everything", and it worked like a charm... though I had to leave the headphones for like an hour or two before the gel that's inside the broken part finally dried out (turns out not being exposed to the open air makes it take a lot longer than the described 30 seconds). I probably should've held the broken piece tight with something for an optimal result, but a lesson learned for the future I guess.

Thanks for the tip!

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Glad it helped you!

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Marq FJA さん、ありがとうございました!
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