{
  "source": "analytic",
  "method": "revolve of a line/3-point-arc profile (XZ, x = radius, z = -sketch y) 360 deg about Z. Pappus/Green: V = 2 pi * int x dA, z_c = int x z dA / int x dA, A = sum over profile edges of 2 pi int x ds (bottom disk r20, frustum r20->25, torus zone of the arc (centre (-16.000000, 33.000000), R=41.109610), frustum r15->18, top disk r18)",
  "body_count": 1,
  "volume_mm3": 112499.47865571639,
  "area_mm2": 13156.614546780698,
  "center_of_mass": [
    0.0,
    0.0,
    35.737480169007014
  ],
  "bbox": {
    "min": [
      -25.10960958218893,
      -25.10960958218893,
      0.0
    ],
    "max": [
      25.10960958218893,
      25.10960958218893,
      80.0
    ]
  },
  "faces": 5
}