Download Free 3D Model Secret compartment hollow screw trick puzzle 3D Print Model

Summary
Top screw is links threaded which makes it counter intuitive as intended. Walls are 2mm. Threads are M12x1.75
Original is made by robrook https://www.thingiverse.com/thing:330688 but there were some problems with scaling in the slicer, and some minor problems with the secret screw threads showing when screwed in.
I also included an exported step-file from fusion 360
Print Settings
Printer Brand:
Wanhao Printer:
Wanhao Duplicator i3 V2 Rafts:
No Supports:
No Resolution:
0.1 Infill:
60% Notes:
I printed with PLA, heated bed and 8mm brim. No support was needed. It is rescaleable but below 50% makes it brittle.