I printed this using a 0.4 nozzle, 0.2 layer on K1 with silk pla+.
You may want to adjust the height of the headset holder portion across the Z-axis to accommodate a smaller headset ( i didn't pay enough attention when designing it, but it's big enough for 2 headsets haha.
No idea if the file is readable, but i couldn't get it to save as anything besides a project file on Creality 5 slicer. Presumably it will be ok if you're using the same/similar slicer as i printed from it.