3D Printed Record
This is an interesting video about a 3D printed record that you can actually play.
I’ve created a technique for converting digital audio files into 3D printable 33rpm records and printed some functional prototypes over the weekend. These records play on regular turntables, with regular needles, at regular speeds, just like any vinyl record. The audio on the records is very low resolution (as you can hear), it has a sampling rate of 11kHz (a quarter of typical mp3 audio) and 5-6bit resolution (mp3 audio is 16 bit).
More information about this technique:
The record playing: