I love these headphones, they give great sound and are comfortable. I liked it so much I bought a pair for my wife as well. I used them daily until the hinge broke and I found out it was a relatively common issue with this model. So again 3D modeling and printing to the rescue.
I spent about a month measuring, modeling, printing, testing until I got it just right. Worked so well I bough a pack of 4 broken ones and fixed them all.
Files on Thingiverse: https://www.thingiverse.com/thing:2733958