u/SpeedCurious3382

Hello everyone,

I hope this request does not infringe any unwritten forum rule.

I am looking for suggestions for an existing 3D-printable mechanical clock design/movement that could realistically run for at least 24 hours between rewinds, without using any electrical motors or electronics.

I would strongly prefer something:

• spring-driven (steel mainspring is perfectly acceptable)
• with a mostly printed mechanism, especially the escapement
• printable on a 256×256×256 mm printer
• tolerant of relatively low precision/accuracy (±10 min/day is completely acceptable)
• reasonably robust/reliable rather than horologically accurate

Metal shafts, bearings, screws, etc. are completely fine.

A pendulum is acceptable if necessary, though I would prefer a non-pendulum solution if practical.

I am mainly looking for recommendations for actual existing models/projects/designs worth printing or studying, rather than designing a movement entirely from scratch.

Does anyone have suggestions for designs that fit these constraints reasonably well?

Thanks in advance.