{
 "description": "A stepped knob revolved about Z: a flange, a waist and a cap, then the cap's top edge rounded.",
 "commands": [
  {
   "command": "parameters.change",
   "params": {
    "name": "flange_r",
    "expression": "20 mm"
   }
  },
  {
   "command": "sketch.create",
   "params": {
    "plane": "XZ",
    "name": "Profile"
   }
  },
  {
   "command": "sketch.line",
   "params": {
    "points": [
     [
      0,
      0
     ],
     [
      20,
      0
     ],
     [
      20,
      6
     ],
     [
      10,
      6
     ],
     [
      10,
      24
     ],
     [
      14,
      24
     ],
     [
      14,
      34
     ],
     [
      0,
      34
     ]
    ],
    "closed": true,
    "ids": [
     "l1",
     "l2",
     "l3",
     "l4",
     "l5",
     "l6",
     "l7",
     "l8"
    ]
   }
  },
  {
   "command": "sketch.dimension",
   "params": {
    "entities": [
     "origin",
     "l1.end"
    ],
    "type": "horizontal",
    "value": "flange_r"
   }
  },
  {
   "command": "sketch.finish",
   "params": {}
  },
  {
   "command": "solid.revolve",
   "params": {
    "axis": "Z"
   }
  }
 ]
}