{
  "source": "analytic",
  "method": "annulus R50/r15 h10 minus 6 through cylinders r=5 on a 40 radius: V = pi(R^2-r^2)h - 6 pi rh^2 h, A = 2 pi(R^2-r^2) + 2 pi(R+r)h + 6(2 pi rh h - 2 pi rh^2); 6-fold symmetry keeps the centroid on the axis",
  "body_count": 1,
  "volume_mm3": 66758.84388878311,
  "area_mm2": 19320.79481957723,
  "center_of_mass": [
    0.0,
    0.0,
    5.0
  ],
  "bbox": {
    "min": [
      -50.0,
      -50.0,
      0.0
    ],
    "max": [
      50.0,
      50.0,
      10.0
    ]
  },
  "faces": 10
}