{
  "source": "analytic",
  "method": "final rule thickness 3 (bend radius = Thickness = 3): base y 6..60 x 3; bend annulus R 3..6 about (y 6, z 6); flange y 0..3, z 6..20; extrusion along x 100",
  "body_count": 1,
  "volume_mm3": 22520.575041173113,
  "area_mm2": 16064.12819493887,
  "center_of_mass": [
    50.0,
    24.30326264966137,
    3.788688791962308
  ],
  "bbox": {
    "min": [
      0.0,
      0.0,
      0.0
    ],
    "max": [
      100.0,
      60.0,
      20.0
    ]
  },
  "note": "the rule's thickness edits regenerate the whole sheet body; only the final 3 mm state matters"
}