Other

Shear-Line Locksmith Bench

Cut a supplied fictional key, inspect five pin-stack boundaries, and turn a teaching plug only when every chamber reaches one shear line.

mechanismlockengineeringgeometrymuseum
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Slow, step and inspect a modeled lever escapement through unlock, impulse and free-swing phases.

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Orbit a live 301 lockstitch cutaway, inspect five modeled parts, freeze four formation beats and shift the interlock through fabric.

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Operate a transparent Y-channel, inspect five modeled part families and close 36 independent elements past a removable pair.

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Brass Bestiary

A watchmaker's apprentice completes brass animal automata inside a bevelled glass case. Fit gears, cams, belts and levers onto a pegboard chassis so one mainspring produces the motions each blueprint asks for — a heron that dips, a beetle that opens its wings, a five-joint peacock. Twenty-four puzzles across four chapters, a free bench, and a cabinet of finished creatures. No timer, no score: the reward is watching the mechanism perform.

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SIDEREAL

You keep a brass orrery. A patron names the bodies and the hour; you cannot move the sky, only the gearing that drives each arm. Fit a pair of wheels to every spindle — a bigger driven wheel turns the arm slower — read what the machine predicts, and let it run until they come round to the same bearing.

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Other

Shear-Line Locksmith Bench

Operate a monumental museum cutaway through twelve commissions, diagnose exact pin-stack blockers, and turn only when five fictional joints share one boundary.

Elan20