I posted on this forum earlier and got an awful lot of help. Thank you for that.
...So here's another problem to solve
I'm on my way to making the coolest portable headphones ever, but I'm stuck.
I need to remove this panel from headband:
It's a piece of plastic that holds on 3 screws, binds on the bottom (left side of the picture), and is somehow held by this round metal thing with an R. I have no idea what it is, but I can't move it in any way. Anyone knows how to open it without harm?