{
 "object": "thermoacoustic-fin-sleeve",
 "license": "CC BY 4.0, Xem Studio",
 "les": "https://longearthsociety.com/engineering/",
 "files": [
  {
   "name": "fin-sleeve-half-2in-34",
   "step": "/files/hardware/thermoacoustic-fin-sleeve/fin-sleeve-half-2in-34.step",
   "stl": "/files/hardware/thermoacoustic-fin-sleeve/fin-sleeve-half-2in-34.stl",
   "note": "fin-sleeve half (y ≥ 0.5): bore Ø50.8, wall 3, 24 radial fins 1.5 thick to Ø72, 34 long; ears x ±27.9..44 with Ø4.5 at x ±40"
  }
 ]
}