Like many, my Frankenquest using the Vive DAS suffered from the issue of the earphones flipping up during use. I read about the fixes involving tightening the screw under the foam (this didn't help, it's more for loose rotation rather than the headphones flipping up) and bending the metal inside the headphone (this seemed risky and unlikely to work consistently). I also didn't want to try the 3D-printed spacer as it would mean buying additional screws and it wouldn't fit in my case anymore. So I quickly designed a clip that would fit over the headphone spar and block the metal arm from moving far enough to pass the metal detent in the arm that causes the “flip out”, but wasn't so aggressive as to actively force the earcups onto your ears.
I printed these in PETG, with 0.20mm layer height, a brim, and 4 perimeters (to avoid needing any infill on the ‘ring’ to create more flexible strength), no supports. The included gcode file reflects both parts, but if you are using the STL model it just needs to be duplicated and mirrored on the X axis to make both L & R parts.
The author hasn't provided the model origin yet.