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Laser cutter carves music files onto wooden records

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May 20, 2013

Amanda Ghassaei recently programmed a laser cutter to carve playable records from wood and...

Amanda Ghassaei recently programmed a laser cutter to carve playable records from wood and other materials

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Not too long ago, Amanda Ghassaei from Instructables caught our attention when she constructed several playable records with a 3D printer. By sending raw audio data through a custom script, she was able to automatically generate 3D designs for a printer to follow – albeit with crude results. Recently, Ghassaei programmed a new code that let her substitute the 3D printer for a laser cutter to carve functional records from wood and other materials.

Like before, the first step was to rip the audio data from a WAV file using Python and then apply it to a customized Processing script. This time though, instead of converting the data to an STL file, it produced a PDF of a vector graphic. According to Ghassaei, the script can be tweaked to account for various materials, cutting machines, record sizes, and turntable speeds.

After obtaining a round piece of wood, a laser cutter slices the tiny bumps and grooves of the record using the vector file as a guide. Ghassaei cut her wooden records onto a sheet of maple with an Epilog 120 Watt Legend EXT laser cutter at an approximate precision of 1,200 dpi, but says these could easily be swapped for other tools and materials. So far, Ghassaei has cut functioning records from wood, acrylic, and paper using this method.

According to Ghassaei, the script can be tweaked to account for various materials, cutting...

Unfortunately, like their 3D-printed predecessors, the sound quality of these laser-etched records leaves much to be desired. Even those cut from acrylic are wracked with distortion, delivering 4-5 bit depth with a sampling rate of just 4.5 kHz (compared to most MP3s' 16 bit depth and 44.1kHz rate). Ghassaei has explained that the laser is simply too wide and cuts much larger grooves than needed.

So a wooden record is certainly stylish, but don't toss out your vinyl records just yet. If you want to try your hand at giving your MP3s an extremely retro overhaul, though, Ghassaei has detailed instructions on her Instructables page. You can also check out the video below to watch the laser cutting process in action while listening to the garbled results.

Source: Amanda Ghassaei, Instructables

About the Author
Jonathan Fincher Jonathan grew up in Norway, China, and Trinidad before graduating film school and becoming an online writer covering green technology, history and design, as well as contributing to video game news sites like Filefront and 1Up. He currently resides in Texas, where his passions include video games, comics, and boring people who don't want to talk about either of those things.   All articles by Jonathan Fincher
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3 Comments

Yeah...And I wouldn't want to play these things on anything more sophisticated than a Kenner Close-n-play either! I can't imagine what this would do to a regular turntable stylus!

Ed
21st May, 2013 @ 12:38 am PDT

Awesome, but I achieved similar results merely by leaving cassettes on the dash long enough! In tropical Australia, long enough was about 30 minutes.

Hogey74
21st May, 2013 @ 02:33 am PDT

it would consume more trees, if this wooden records getting popular, would it? carving a functional records on a recycled junk would be better maybe, a junk to a funk, sounds good.

Redo S. Ramadhan
21st May, 2013 @ 02:03 pm PDT
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