{
  "source": "analytic",
  "method": "plate 60x60x10 + boss r12 h20 minus cavity (box 56x56x8 + cylinder r10 z8..28) under SolidCraft's intersection-join shell convention (offset faces extended to meet: sharp circular inner edge at r10, z8). A rounded (arc) join would give V 13620.2567, A 14104.4455, 16 faces (torus round r2)",
  "body_count": 1,
  "volume_mm3": 13676.601535159018,
  "area_mm2": 14156.601535159018,
  "center_of_mass": [
    0.0,
    0.0,
    10.785311024697076
  ],
  "bbox": {
    "min": [
      -30.0,
      -30.0,
      0.0
    ],
    "max": [
      30.0,
      30.0,
      30.0
    ]
  },
  "faces": 15
}