#mechanical

A fully 3D-printed watch case built around an off-the-shelf Miyota 8N24 movement, using a twist-lock bayonet back instead of fussy threads.

John Raffaelli machined nearly every part of a working mechanical watch movement himself, buying only the jewels, crystal, strap, hairspring, and mainspring.

The Openmovement foundation released complete STEP files for a serviceable Swiss-lever escapement movement, aimed at watchmaking schools and new makers rather than collectors.

TallmanLabs built a piezo-microphone timegrapher that measures a mechanical watch's rate, amplitude, and beat error without the cost of a commercial acoustic probe.