Sheet metal. Beer cans. Pieces of chain. Not items you’ll typically find on the BOM for a custom guitar. But nobody told [Maarten van Halderen] that, and so he threw them all together into a ...

So it’s unsurprising that he lists Hendrix’s Band of Gypsys and Zeppelin’s Physical Graffiti as must-have albums for any guitar player ... as one that changed heavy metal forever.