{
 "object": "marble-engine-base",
 "license": "CC BY 4.0, Xem Studio",
 "les": "https://longearthsociety.com/engineering/",
 "files": [
  {
   "name": "marble-engine-base",
   "step": "/files/hardware/marble-engine-base/marble-engine-base.step",
   "stl": "/files/hardware/marble-engine-base/marble-engine-base.stl",
   "note": "base 438 \u00d7 100 \u00d7 8 (y \u221260..40): 4 \u00d7 \u00d83.4 for the two pivot posts and 4 for the two crank stands, each with an M3 nut pocket (5.5 AF) from the underside"
  }
 ]
}