{
 "units": "mm",
 "_": "Sierpinski tetrahedron, rank 2, edge 80 mm: 16 tetrahedra of edge 20 mm, joined by 0.3 mm bridges where the pure fractal touches at a point. Built as ONE intersection: a prism over a rank-2 Sierpinski triangle along Y, cut by the same prism upside down along X. Stands on an edge; lay it on a face in the slicer. Morphyx, 10-07, for prb.",
 "params": {},
 "features": [
  {
   "op": "sketch",
   "id": "a",
   "plane": "XZ",
   "loops": [
    {
     "name": "outer",
     "polygon": [
      [
       -40,
       -28.2843
      ],
      [
       40,
       -28.2843
      ],
      [
       0,
       28.2843
      ]
     ]
    },
    {
     "name": "hole0",
     "polygon": [
      [
       0,
       -27.7379
      ],
      [
       19.4204,
       -0.2732
      ],
      [
       -19.4204,
       -0.2732
      ]
     ]
    },
    {
     "name": "hole1",
     "polygon": [
      [
       -20,
       -27.7379
      ],
      [
       -10.5796,
       -14.4153
      ],
      [
       -29.4204,
       -14.4153
      ]
     ]
    },
    {
     "name": "hole2",
     "polygon": [
      [
       20,
       -27.7379
      ],
      [
       29.4204,
       -14.4153
      ],
      [
       10.5796,
       -14.4153
      ]
     ]
    },
    {
     "name": "hole3",
     "polygon": [
      [
       0,
       0.5464
      ],
      [
       9.4204,
       13.8689
      ],
      [
       -9.4204,
       13.8689
      ]
     ]
    }
   ]
  },
  {
   "op": "extrude",
   "id": "pa",
   "profile": "a",
   "from": -80,
   "to": 80
  },
  {
   "op": "sketch",
   "id": "b",
   "plane": "YZ",
   "loops": [
    {
     "name": "outer",
     "polygon": [
      [
       -40,
       28.2843
      ],
      [
       40,
       28.2843
      ],
      [
       0,
       -28.2843
      ]
     ]
    },
    {
     "name": "hole0",
     "polygon": [
      [
       0,
       27.7379
      ],
      [
       19.4204,
       0.2732
      ],
      [
       -19.4204,
       0.2732
      ]
     ]
    },
    {
     "name": "hole1",
     "polygon": [
      [
       -20,
       27.7379
      ],
      [
       -10.5796,
       14.4153
      ],
      [
       -29.4204,
       14.4153
      ]
     ]
    },
    {
     "name": "hole2",
     "polygon": [
      [
       20,
       27.7379
      ],
      [
       29.4204,
       14.4153
      ],
      [
       10.5796,
       14.4153
      ]
     ]
    },
    {
     "name": "hole3",
     "polygon": [
      [
       0,
       -0.5464
      ],
      [
       9.4204,
       -13.8689
      ],
      [
       -9.4204,
       -13.8689
      ]
     ]
    }
   ]
  },
  {
   "op": "extrude",
   "id": "pb",
   "profile": "b",
   "from": -80,
   "to": 80,
   "mode": "intersect"
  }
 ]
}