Cover to protect the exposed parts of 3.5inch hdd's. I had hdd's with 20 and 26mm height in my collection. Measure yours before printing!

Printed with PetG in vase/spiral mode. 0.4 nozzle with 0.5mm line width and 0.28mm layer height. Max fan speed layer time set to 5s. Prints in 30-45min with less than 20g filament.