Swedish engineering consultation firm Sandvik partnered up with Andy Holt of Drewman Guitars to create the first smash-proof 3D-printed guitar. 
The instrument body was made through a process of additive manufacturing that 3D-prints titanium powder by melting it into layers thinner than a human hair. The guitar neck and the body “core” were created instead with a unibody design, by milling them from a single piece of stainless steel. This way, Sandvik eliminated the neck and body joint where a guitar is usually more prone to break.

But how do you asses if such a guitar would actually be smash-proof? That’s simple: you give to a rocker like Yngwie Malmsteen, famous both for his shredding solo style, and for his inclination to destroy guitar after guitar on stage during his concerts. 
The verdict was favorable to Sandvik’s engineers, as the guitar stayed completely intact despite the brute force unleashed on it by Malmsteen during a concert in Miami.