" Flexible" wire for use in headphones with earcups that swivel?

Any chance of using the flexible wire from other headphones - even really cheap ones from dollar/euro/pound shops? IME it can be difficult to solder these wires, as trying to strip off the insulation can often break then thin conductor wires, but it will cost very little to give it a try.

Check if the wire is a single insulated wire, two insulated wires twisted to gether, or shielded coaxial cable.

Ribbon cable is probably to large and stiff. Instead, I suggest disassembling an audio phono cable, mouse cable, or computer serial cable for suitable wire.

This might help: "Soldering Headphones And Enamel Wire"

If you end up with something that is difficult to solder, try wrapping one strand of fine wire around the end of the wire and tin it with as little solder as possible. That should be both stronger and easier to handle.

Thank you Jeff Layman and Jeff Liebermann,

The current wire is single strand insulated.

I'll scavenge something to find suitable wire, and the soldering advice is definitely useful.

Best Regards Mike