Mechanical Timed-Reveal Picture Frame
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A fully mechanical picture frame that reveals a second image at a time you set.
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Model information
- Source
- Printables
- Category
- Puzzles & Brain-teasers
- License
- Creative Commons — Attribution — Noncommercial — Share Alike
This is a picture frame with a delayed reveal. It holds two printed images and, at a time you set, suddenly changes which one is visible.
Set it for hours, days, or weeks, then display it, give it to someone, or mail it. Until the reveal, it looks and behaves like an ordinary picture frame. There is no screen, app, or digital display.
Full demonstration and complete build guide:
HOW IT WORKS
An ordinary quartz clock mechanism winds a string. The string pulls a zipper, the zipper releases a latch, and a falling weight raises the cover image to reveal the second image underneath.
The timer continues running through normal packing, shipping, jostling, tilting, and being turned upside down. The frame only needs to be upright when the timer finishes so gravity can complete the reveal.
PRINTING — RELEASE 3.0.0
A complete build requires both prepared 3MF projects:
• Frame + Stand — 0.6 mm nozzle recommended
• Everything Else — 0.4 mm nozzle required
Complete parts list and illustrated instructions: