[Zach] made this board in his apartment, using a machine of his own creation—the Circuit Graver ... started carving boards using a modified box cutter blade by hand, before realizing the ...

The ‘Circuit Graver’ by [Zach Fredin] is an unconventional PCB milling machine, utilizing many 3D printed parts, the familiar bed-slinger style Cartesian bot layout and a unique cutting head.