Labyrinth Vault – Twin-Pin Lock + Compartment

A pocket vault with two secrets — most people never find the second one.

Secret #1: the labyrinth lock. Two pins on the inner cup must navigate 44 carved channels through the sleeve wall — twist and slide through 6 depth levels, past traps designed to waste your evening:

• an entry plummet that drops you straight to a dead end (everyone falls for it)
• a false ring road ending 2 mm from the finish column — visible agony
• a backtrack-up move mid-route (down is not always forward)
• a fake lock pocket at the wrong angle, one column from the real one
• a final pull-then-twist move: the true lock needs the box pulled apart slightly before the last turn. Nobody guesses it first try.

The maze is carved inside the wall — completely invisible from outside. You navigate blind, by feel, like picking a lock. No peeking, no cheating, no shortcuts: the smooth knurled exterior gives nothing away. Twin pins at 180° mean the cup glides without jamming — it feels like a machined instrument.

Secret #2: the bottom is a lie. The knurled "grip ring" on the base is actually a threaded plug hiding a second Ø13 × 9 mm compartment. Even after someone beats the maze and finds the main stash (Ø22 × 32 mm — cash, jewelry, SD cards, a note), the real prize can still be sitting under their thumb.

Design by Borealis3D on MakerWorld (license: BY).