Sheet metal. Beer cans ... take on the building of string instruments, check out this post on mandolins and violas. Or maybe you can just 3D print your next guitar?

Billy Strings performs in 20,000-capacity arenas with just five things: guitar, banjo ... weaving in the drama and ferocity of hard-rock and metal and the extended explorations of jam bands.

Just like acoustic guitars, classical guitars have a wooden body with six strings. The strings, however, are slightly different: they're usually made of nylon or gut, unlike the metal strings used on ...