I have remade the hinge and it is now solder less.
Some people had requested to make it different since not everyone was conformable soldering and the previous non solder I agree was bulky and ugly.
You no longer need the metal pin, but do need 2 M3 screws. The blue rubber o-rings connecting the hinge to the cup are still optional but they will be much better if you use them. If I can find the original screws I can upload a second version with the smaller holes for those screws.
So I have 2 pairs of MDR XB950BT where the one broke the part that holds the cup and the other broke the headband.
So I have created these 2 options for others to to be able to fix their headphones as well.
The first one uses all the original parts from the headphones and only replaced the part that hold the ear cup. With this option you will need to desolder and un-snake the cable from the original then snake it back through the new printed one. Make sure of where the wires were soldered before, you cant just rely on looking at the other side as the wire older is switched but they are marked.
For this one i suggest you add supports just from the bed to the part and not inside as they would be hard to remove and in my case were unneeded as they are just round tunnels.
The second option I used parts from the EQ1 headphones uploaded by 3DCentralVA.
I modified the headband so it could fit my design.
You will need to print more parts but you do not have to solder unless you find that easier.
You could just continue to break/cut the plastic to free the cable (you don't have to break the plastic on the ear cups). The new pictures in black are the v2, the silver are the v1.