Print your own records (LP)

[Harmony]

"In an effort to boldly 3D print where no man or woman has 3D printed before, 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.

http://www.instructables.com/id/3D-Printed-Record/