UPDATE: Please visit www.hovalin.com for the Version 3 files and details that are currently available.
Not MY design, just sharing the info and files from http://www.hovalin.com:
AN OPEN SOURCE 3D PRINTABLE 4/4 ACOUSTIC VIOLIN
"The hovalin is a functional acoustic violin that can be produced using most standard consumer 3d printers. The total cost of raw materials for the violin (4/4) is currently about $70. The hovalin was designed with Autodesk Fusion 360. Its shape and dimensions are inspired by the Stradivarius violin model."
"We're so incredibly excited to be able to share this project with you! We encourage that you find a way to incorporate making your own violins into your schools, music programs, or wherever the music takes you. This project is a labor of love. We'd prefer that you pay it forward, but also, if you want to help us with cost of prototyping new violins, web hosting, and coffee, feel free to donate via Paypal. Most importantly, please share this project with others."
The shopping list for the hovalin can be found at: http://www.hovalin.com/make/
But what does it sound like? Hear it in action: https://youtu.be/9fZ_vYkuuZU
"The hovalin is licensed as Creative Commons Attribution Non-Commercial Share Alike. This means that you are welcome to modify and distribute the design and derivatives thereof. You must, however, maintain an open design and give credit to HOVA LLC with all derivatives and copies. You may use the hovalin for commercial purposes if you agree to send 10% of your gross revenue from use of the design to HOVA LLC every six months." Contact them if further discussion is necessary.
"If you wish to use assets from the hovalin or hovalin.com for any media or promotional purpose, please contact them. The hovalin by HOVA LLC http://www.hovalin.com is licensed under a Creative Commons Non-Commerical Attribution ShareAlike 4.0 Unported License."
Based on a work at http://www.hovalin.com, visit the site for more detailed information.
Also visit these Make magazine webpages for more information:
.30mm (top, mid, bottom) and .10mm (neck)
FoxSmart silver PLA; 195/70 temp bottom part, 200/70 temp mid part, 205/70 temp top & neck
Resolution for bottom, mid, top: .30mm @ 50% infill with 2 perimeter shells
Resolution for neck: .10mm @ 50% infill with 3 perimeter shells
Info from http://www.hovalin.com/make/
"Sanding the Fretboard will help get rid of any buzzing overtones. It can also give the violin a more finished look. I've had good results by sanding at 100 grit, then moving on to 300, and then 600 grit sandpaper. For extra credit, sand the rest of the surfaces as well."
Install Tuner Pegs
Install Carbon Fiber Rods