Guitars are inherently cool. You can take the cool up a notch or two by getting a limited or special edition from one of the big manufacturers, or even by having your existing one customized. But you’ll be hard-pressed to find one as cool looking as one of Olaf Diegel’s 3D-Printed Guitars. We can’t comment on the sound because we’ve never heard one rupture an ear drum, but if they sound half as good (or intricate) as they look, expect to see one in Slash’s hands soon. Until then, feel free to ogle this musical design porn courtesy of the genius professor of Mechtronics.