JBL Tune 7XX ear cup fork

This part is designed to replace the RIGHT ear cup fork mount on JBL Tune 7XX series headphones - made for and tested on JBL Tune 770NC but it will fit several other models with similar cup forks. It can be used for the left side as well by mirroring the part before printing.

Print this part in PETg or a stronger material using high infill - 80% or more is probably best. Use a wide brim - I used 20 mm - and add supports under the overhanging parts. I test-printed the part at 0.16 mm and 0.10 mm Z-resolution, both are useable but 0.10 looks better. The photos show the part as printed in 0.10 mm on an Ender 3.

I'm using the original female swivel joint part which connects the cup fork to the headband. To remove the original cup fork or the broken-off part of the pivot pin from this part you need to push out the metal pin which holds it in place:

To remove that pin you need to drill a 1mm hole opposite the visible piece of the pin (visible on the inside of the part) and push the pin out:

The pin will be re-used to mount the new cup fork so don't loose it. I have not modelled this part yet but I might do so for completeness' sake. In my experience the female swivel hinge part is not the weak point on these headphones, hence my re-use of the existing ones.