It’s not uncommon to merge two hobbies seemingly on opposite ends of the spectrum. Let’s take 3D printing as an example, now accessible and affordable. Typewriter collectors are using this technology to make 3D printed typewriter cases and hard-to-replace components. The same thing is happening in the music community, where audiophiles are launching 3D printing projects that make their collections more enjoyable.
You may be wondering if it is possible to 3D print a playable vinyl record. Yes, even with the most affordable 3D printers. One method, that of user GoChee on Maker World, relies on audio editing software, like Audacity, to prepare music for 3D printing. This project involves printing 7-inch discs intended to be played at 78 rpm or 45 rpm. For the 45, stretching the audio (slowing it down) by 135% ensures smooth playback.
After exporting the audio, you run a Python script to convert the WAV file to TXT. From there, a separate program is used to generate the STL file, which is a template record for your 3D printer software. This will give you everything you need to print – or cut as it is commonly called in the community. Keep the print speed low for accuracy and watch your vinyl record print.
The pitfall of this 3D printing project
Creating a unique 3D printed vinyl record might sound like fun, but don’t expect much in the way of fidelity. Many people think that vinyl sounds better than digital audio because it’s more alive and natural, but a 3D printed record is a different story. It’s a sonic mess because of the inherent limitations of 3D printers: They print objects layer by layer down to 100 micrometers, which is much larger than what’s required for the precise groove of a traditional vinyl record.
The hardware difference is also notable. Vinyl is ideal because it is dense with a smooth, glassy surface. In comparison, most materials used in 3D printing are soft, while surfaces are textured and irregular. Ultimately, this fun project is great if you want to learn more about old-school audio or need a solid conversation starter. But the sound you get isn’t exactly high fidelity, at least for now.
