AKG K271 MKII replacement parts

This contains replacements for two parts that broke on my headphones:

1. Switch disc: this little piece holds the headband together and presses the switch that mutes the headphones when they're removed. This must be printed with supports.

2. Headband anchor: this anchors the heavy gauge wires that form the headband and transfer signal to the right ear. You'll need to desolder the wires before installation and resolder afterwards.