{
  "source": "analytic",
  "method": "true helix coil (screw motion of the axial d4 section, R20, pitch 8, 3 turns): V = turns * 2 pi R * pi a^2; lateral A = turns * 2 pi * int sqrt(r^2 + (p/2pi)^2 (dr/ds)^2) ds (periodic trapezoid, exact to round-off) + two end discs; COM z = pitch*turns/2",
  "body_count": 1,
  "volume_mm3": 4737.410112522892,
  "area_mm2": 4767.351236008563,
  "center_of_mass": [
    0.0,
    0.0,
    12.0
  ],
  "bbox": {
    "min": [
      -22.0,
      -22.0,
      -2.0
    ],
    "max": [
      22.0,
      22.0,
      26.0
    ]
  },
  "faces": 3
}