Headphones holder with a vertical hook

Headphones holder designed to be hooked to a vertical plank (e.g. at the back of your desk). Fits perfectly on a plank that's 18mm thick. The holder was designed for my Steelseries Arctis 9 headphones but should work pretty well with other ones of a similiar size.

My printing settings

• Nozzle: 0.6mm
• Layer: 0.3mm (I've enabled variable layer height and configured lower layers at both ends of the model to get smoother corners)
• Material: PETG