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, and its shape and dimensions are inspired by the Stradivarius violin model. The hovalin project is inspired in part by David Perry's FFFiddle. Check it out here.