String
Used for: vibration path
In this build
Enough clean string for a short, clear space. Keep it gently taut without pulling the cups hard.
Make a string telephoneSuggested by the project’s author. Shared attempts below describe what happened when people tried it.
What people tried
No one has shared an attempt here yet. A suggested use is a starting point, not a tested result.
I tried this
An unfinished attempt or something that did not work can be useful to someone else.