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The complexity of a puzzle box is determined by the "steps" required to open it. Common mechanisms include:

Mechanical puzzle boxes are handheld objects that require a series of physical manipulations to open or solve. Often referred to as "trick boxes" or Himitsu-Bako in Japanese culture, they combine intricate joinery with hidden internal mechanisms like sliders, gears, and magnetic locks to secure a secret compartment. mechanical-puzzle-box

: Dovetail-shaped notches allow panels to slide back and forth in a specific sequence without falling off the box. The complexity of a puzzle box is determined

: Modern makers use 3D printers to design complex "escapable" boxes with intricate internal chambers that would be difficult to carve by hand. mechanical-puzzle-box

How This Guy Makes the World's Best Puzzle Boxes | Obsessed | WIRED