From the page: The shiny disc asks for a new shine
Idea 9
Music box
Music boxes were born in 18th-century Switzerland, when watchmakers discovered that a pinned cylinder rotating over metal teeth produces melodies. The CD, with its reflective surface and rigid plastic, works as a surprising resonator: sound strikes the surface and vibrates the trapped air, amplifying the notes like a small speaker cabinet.
What you need
- 1 old CD
- Simple music box movement (recoverable from a toy or bought cheaply, with cylinder and teeth)
- Hot glue or contact cement
- Small pieces of wood or thick cardboard for the base
- Optional decorations (fabric scraps, buttons, seeds)
How to make it
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1
Fix the music movement (that piece with the crank or key that plays) to the center of a wooden or thick cardboard base — the firm base keeps the vibration from dissipating into the table.
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2
Glue the CD to the base, with the movement's shaft through the center hole, so the disc's surface stays free to vibrate.
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3
Leave a small air gap between the CD and the base; the trapped air works as a resonance chamber and makes the sound fuller.
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4
Glue only the edges of the CD, leaving the middle loose: the disc vibrates better when it isn't fully attached.
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5
Turn the crank slowly and listen — if it sounds muffled, loosen the disc a bit more or raise it with cardboard rings.
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6
Decorate the edges with fabric, buttons or seeds, taking care not to cover the disc where it needs to vibrate.
Finishing touches
Try CDs of different colors — the reflection changes the piece's charm. If you want a deeper sound, use two stacked CDs with air between them, creating a richer resonance.
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