{
 "object": "fpse-power-piston",
 "license": "CC BY 4.0, Xem Studio",
 "les": "https://longearthsociety.com/engineering/",
 "files": [
  {
   "name": "fpse-piston-48-40mag",
   "step": "/files/hardware/fpse-power-piston/fpse-piston-48-40mag.step",
   "stl": "/files/hardware/fpse-power-piston/fpse-piston-48-40mag.stl",
   "note": "piston body: seal land Ø48.00 × 30 (crown 8 with a Ø23 × 6 pocket, skirt bore Ø44), magnet carrier Ø47 × 60 (bore Ø30) with 4 rows × 10 radial pockets Ø12 × 3 at z 37, 51, 65, 79, hub tube Ø20 / Ø12 (the rod's running fit)"
  },
  {
   "name": "fpse-piston-top-plate",
   "step": "/files/hardware/fpse-power-piston/fpse-piston-top-plate.step",
   "stl": "/files/hardware/fpse-power-piston/fpse-piston-top-plate.stl",
   "note": "piston top plate Ø30 × 4 in the carrier bore on the hub's end, Ø18 bore for the tube rod, 4 × Ø2 vents"
  },
  {
   "name": "fpse-tube-rod-18x14",
   "step": "/files/hardware/fpse-power-piston/fpse-tube-rod-18x14.step",
   "stl": "/files/hardware/fpse-power-piston/fpse-tube-rod-18x14.stl",
   "note": "tube rod Ø18 / Ø14 × 142.15: from the piston's hub to above leaf D"
  }
 ]
}