[
  {
    "type": "pcb_board",
    "pcb_board_id": "pcb_board_1",
    "width": 40,
    "height": 30,
    "thickness": 1.6,
    "center": { "x": 0, "y": 0 }
  },
  {
    "type": "pcb_cutout",
    "pcb_cutout_id": "usb_notch",
    "shape": "rect",
    "center": { "x": 0, "y": 15 },
    "width": 10,
    "height": 6,
    "corner_radius": 1
  },
  {
    "type": "pcb_cutout",
    "pcb_cutout_id": "edge_half_circle",
    "shape": "circle",
    "center": { "x": 20, "y": 0 },
    "radius": 3
  },
  {
    "type": "pcb_cutout",
    "pcb_cutout_id": "corner_notch",
    "shape": "polygon",
    "points": [
      { "x": -22, "y": -17 },
      { "x": -16, "y": -17 },
      { "x": -16, "y": -11 },
      { "x": -22, "y": -11 }
    ]
  },
  {
    "type": "pcb_cutout",
    "pcb_cutout_id": "internal_hole",
    "shape": "circle",
    "center": { "x": -8, "y": 0 },
    "radius": 2
  },
  {
    "type": "pcb_cutout",
    "pcb_cutout_id": "off_board",
    "shape": "rect",
    "center": { "x": 40, "y": 40 },
    "width": 4,
    "height": 4
  }
]