{
 "object": "piston-stop-bumper",
 "license": "CC BY 4.0, Xem Studio",
 "les": "https://longearthsociety.com/engineering/",
 "files": [
  {
   "name": "stop-bumper-30",
   "step": "/files/hardware/free-piston-core/stop-bumper-30.step",
   "stl": "/files/hardware/free-piston-core/stop-bumper-30.stl",
   "note": "end-stop bumper Ø30 OD (= the Ø30 bore) × 6"
  },
  {
   "name": "stop-bumper-40",
   "step": "/files/hardware/free-piston-core/stop-bumper-40.step",
   "stl": "/files/hardware/free-piston-core/stop-bumper-40.stl",
   "note": "end-stop bumper Ø40 OD (= the Ø40 bore) × 6"
  }
 ]
}