{
 "id": "58-phone-stand",
 "name": "Phone stand",
 "description": "Side profile on XZ (base, front lip, 65 deg back rest) extruded symmetric 35 each side; root fillets R3 and R2; cable slot cut through the base.",
 "exercises": [
  "sketch_xz",
  "symmetric",
  "fillet",
  "extrude_cut",
  "realistic"
 ],
 "units": {
  "length": "mm",
  "angle": "deg",
  "area": "mm2",
  "volume": "mm3"
 },
 "conventions": {
  "world": "right-handed; Z up. XY/XZ/YZ are the origin planes.",
  "sketch_frame": "sketch-local 2D coords; world = plane.origin + x*plane.x_dir + y*plane.y_dir (origin in mm). Profile 'loops' list sketch entity ids.",
  "point_refs": "'<id>.start' / '<id>.end' / '<id>.center' reuse (share) that existing sketch point; 'at' is its position when referenced.",
  "extrude_direction": "positive = along sketch plane normal unless stated",
  "selections": "selected faces/edges carry 'point': a world-space point on the face / the edge's parametric midpoint; pick the nearest face/edge to it."
 },
 "parameters": [],
 "features": [
  {
   "op": "sketch",
   "name": "SideProfile",
   "plane": {
    "ref": "XZ",
    "origin": [
     0.0,
     0.0,
     0.0
    ],
    "x_dir": [
     1.0,
     0.0,
     0.0
    ],
    "y_dir": [
     0.0,
     0.0,
     -1.0
    ],
    "normal": [
     0.0,
     1.0,
     0.0
    ]
   },
   "entities": [
    {
     "type": "line",
     "start": {
      "at": [
       0.0,
       0.0
      ]
     },
     "end": {
      "at": [
       90.0,
       0.0
      ]
     },
     "id": "l1"
    },
    {
     "type": "line",
     "start": {
      "ref": "l1.end",
      "at": [
       90.0,
       0.0
      ]
     },
     "end": {
      "at": [
       90.0,
       -18.0
      ]
     },
     "id": "l2"
    },
    {
     "type": "line",
     "start": {
      "ref": "l2.end",
      "at": [
       90.0,
       -18.0
      ]
     },
     "end": {
      "at": [
       84.0,
       -18.0
      ]
     },
     "id": "l3"
    },
    {
     "type": "line",
     "start": {
      "ref": "l3.end",
      "at": [
       84.0,
       -18.0
      ]
     },
     "end": {
      "at": [
       84.0,
       -6.0
      ]
     },
     "id": "l4"
    },
    {
     "type": "line",
     "start": {
      "ref": "l4.end",
      "at": [
       84.0,
       -6.0
      ]
     },
     "end": {
      "at": [
       30.0,
       -6.0
      ]
     },
     "id": "l5"
    },
    {
     "type": "line",
     "start": {
      "ref": "l5.end",
      "at": [
       30.0,
       -6.0
      ]
     },
     "end": {
      "at": [
       -8.035643557,
       -87.567700833
      ]
     },
     "id": "l6"
    },
    {
     "type": "line",
     "start": {
      "ref": "l6.end",
      "at": [
       -8.035643557,
       -87.567700833
      ]
     },
     "end": {
      "at": [
       -14.035643557,
       -87.567700833
      ]
     },
     "id": "l7"
    },
    {
     "type": "line",
     "start": {
      "ref": "l7.end",
      "at": [
       -14.035643557,
       -87.567700833
      ]
     },
     "end": {
      "at": [
       24.0,
       -6.0
      ]
     },
     "id": "l8"
    },
    {
     "type": "line",
     "start": {
      "ref": "l8.end",
      "at": [
       24.0,
       -6.0
      ]
     },
     "end": {
      "at": [
       0.0,
       -6.0
      ]
     },
     "id": "l9"
    },
    {
     "type": "line",
     "start": {
      "ref": "l9.end",
      "at": [
       0.0,
       -6.0
      ]
     },
     "end": {
      "ref": "l1.start",
      "at": [
       0.0,
       0.0
      ]
     },
     "id": "l10"
    }
   ],
   "constraints": [],
   "dimensions": []
  },
  {
   "op": "extrude",
   "name": "Body",
   "operation": "new",
   "profiles": [
    {
     "sketch": "SideProfile",
     "loops": [
      {
       "outer": true,
       "curves": [
        "l1",
        "l10",
        "l2",
        "l3",
        "l4",
        "l5",
        "l6",
        "l7",
        "l8",
        "l9"
       ]
      }
     ]
    }
   ],
   "extent": {
    "type": "symmetric",
    "distance": 35,
    "is_full_length": false,
    "meaning": "distance on each side"
   },
   "result_bodies": [
    "Stand"
   ]
  },
  {
   "op": "fillet",
   "name": "RestFillet",
   "type": "constant_radius",
   "radius": 3,
   "tangent_chain": false,
   "edge_selection": "the two Y-parallel edges where the back rest meets the base (x=30,z=6 concave; x=24,z=6 concave)",
   "edges": [
    {
     "type": "line",
     "start": [
      30.0,
      -35.0,
      6.0
     ],
     "end": [
      30.0,
      35.0,
      6.0
     ],
     "point": [
      30.0,
      0.0,
      6.0
     ]
    },
    {
     "type": "line",
     "start": [
      24.0,
      -35.0,
      6.0
     ],
     "end": [
      24.0,
      35.0,
      6.0
     ],
     "point": [
      24.0,
      0.0,
      6.0
     ]
    }
   ]
  },
  {
   "op": "fillet",
   "name": "LipFillet",
   "type": "constant_radius",
   "radius": 2,
   "tangent_chain": false,
   "edge_selection": "the Y-parallel concave edge at the lip root (x=84, z=6)",
   "edges": [
    {
     "type": "line",
     "start": [
      84.0,
      -35.0,
      6.0
     ],
     "end": [
      84.0,
      35.0,
      6.0
     ],
     "point": [
      84.0,
      0.0,
      6.0
     ]
    }
   ]
  },
  {
   "op": "sketch",
   "name": "SlotSketch",
   "plane": {
    "ref": "XY",
    "origin": [
     0.0,
     0.0,
     0.0
    ],
    "x_dir": [
     1.0,
     0.0,
     0.0
    ],
    "y_dir": [
     0.0,
     1.0,
     0.0
    ],
    "normal": [
     0.0,
     0.0,
     1.0
    ]
   },
   "entities": [
    {
     "type": "line",
     "start": {
      "at": [
       45,
       -10
      ]
     },
     "end": {
      "at": [
       70,
       -10
      ]
     },
     "id": "l1"
    },
    {
     "type": "line",
     "start": {
      "ref": "l1.end",
      "at": [
       70.0,
       -10.0
      ]
     },
     "end": {
      "at": [
       70,
       10
      ]
     },
     "id": "l2"
    },
    {
     "type": "line",
     "start": {
      "ref": "l2.end",
      "at": [
       70.0,
       10.0
      ]
     },
     "end": {
      "at": [
       45,
       10
      ]
     },
     "id": "l3"
    },
    {
     "type": "line",
     "start": {
      "ref": "l3.end",
      "at": [
       45.0,
       10.0
      ]
     },
     "end": {
      "ref": "l1.start",
      "at": [
       45.0,
       -10.0
      ]
     },
     "id": "l4"
    }
   ],
   "constraints": [],
   "dimensions": []
  },
  {
   "op": "extrude",
   "name": "CableSlot",
   "operation": "cut",
   "profiles": [
    {
     "sketch": "SlotSketch",
     "loops": [
      {
       "outer": true,
       "curves": [
        "l1",
        "l2",
        "l3",
        "l4"
       ]
      }
     ]
    }
   ],
   "extent": {
    "type": "through_all",
    "direction": "positive"
   },
   "result_bodies": [
    "Stand"
   ]
  }
 ]
}