When printed all hinges should be moved carefully. Once it starts move it wil be OK.
Ears on top hinges are weakest part, be carefull with it at the beginning.
Bottom hinges are the hardest part to start moving.
3d model print parameters
Printer brand:
Prusa
Printer:
Prusa Steel
Rafts:
No
Supports:
No
Resolution:
layer 0.15mm nozzle 0.4mm
Infill:
20%
Notes:
No ...support/brim needed Cooldown enabled Printed in HIPS (ABS is OK too)