{
 "object": "thermoacoustic-hot-fin-sleeve",
 "license": "CC BY 4.0, Xem Studio",
 "les": "https://longearthsociety.com/engineering/",
 "files": [
  {
   "name": "ta-fin-sleeve-2in-16x80",
   "step": "/files/hardware/thermoacoustic-hot-fin-sleeve/ta-fin-sleeve-2in-16x80.step",
   "stl": "/files/hardware/thermoacoustic-hot-fin-sleeve/ta-fin-sleeve-2in-16x80.stl",
   "note": "radial-fin sleeve for the 2 in tube: bore Ø50.8 (the tube OD) × 82.85, 2 mm wall, 16 radial fins 1.6 thick to Ø80 over the last 75.85, 7 mm band with 3 × M4 tapped (Ø3.3) at 0 / 120 / 240°; drawn in the cup's frame (49 to 131.85 from its face)"
  }
 ]
}