{
 "commands": [
  {
   "command": "sketch.create",
   "params": {
    "plane": {
     "origin": [
      0.0,
      0.0,
      0.0
     ],
     "x_dir": [
      1,
      0,
      0
     ],
     "y_dir": [
      0,
      1,
      0
     ]
    },
    "name": "A"
   }
  },
  {
   "command": "sketch.rectangle.center",
   "params": {
    "center": [
     0,
     0
    ],
    "corner": [
     20,
     15
    ]
   }
  },
  {
   "command": "sketch.rectangle.center",
   "params": {
    "center": [
     0,
     0
    ],
    "corner": [
     10,
     7
    ]
   }
  },
  {
   "command": "sketch.finish",
   "params": {}
  },
  {
   "command": "sketch.create",
   "params": {
    "plane": {
     "origin": [
      0.0,
      0.0,
      24.0
     ],
     "x_dir": [
      1,
      0,
      0
     ],
     "y_dir": [
      0,
      1,
      0
     ]
    },
    "name": "B"
   }
  },
  {
   "command": "sketch.rectangle.center",
   "params": {
    "center": [
     0,
     0
    ],
    "corner": [
     14,
     10
    ]
   }
  },
  {
   "command": "sketch.rectangle.center",
   "params": {
    "center": [
     0,
     0
    ],
    "corner": [
     6,
     3
    ]
   }
  },
  {
   "command": "sketch.finish",
   "params": {}
  },
  {
   "command": "solid.loft",
   "params": {
    "sections": [
     {
      "sketch": "A",
      "profiles": [
       {
        "point": [
         15,
         0
        ]
       }
      ]
     },
     {
      "sketch": "B",
      "profiles": [
       {
        "point": [
         10,
         0
        ]
       }
      ]
     }
    ],
    "operation": "new",
    "body_name": "RectRing"
   }
  }
 ]
}