{
 "object": "fpse-hub-collars",
 "license": "CC BY 4.0, Xem Studio",
 "les": "https://longearthsociety.com/engineering/",
 "files": [
  {
   "name": "fpse-collar-12x20",
   "step": "/files/hardware/fpse-hub-collars/fpse-collar-12x20.step",
   "stl": "/files/hardware/fpse-hub-collars/fpse-collar-12x20.stl",
   "note": "collar Ø20 × 5, Ø12 bore, M3 tapped radial hole (Ø2.5): clamps leaf B's hub on the displacer rod against the cap's boss"
  },
  {
   "name": "fpse-collar-18x28",
   "step": "/files/hardware/fpse-hub-collars/fpse-collar-18x28.step",
   "stl": "/files/hardware/fpse-hub-collars/fpse-collar-18x28.stl",
   "note": "collar Ø28 × 5, Ø18 bore, M3 tapped radial hole (Ø2.5): two per piston leaf, either side of its hub on the tube rod"
  }
 ]
}