run 20260429T120449Z-ad3a

Summary

Prompt

Make a flat bar with a stadium-shaped (rectangle with semicircular ends) footprint, extruded 10mm along Z. Total end-to-end length is 80mm along X; total width is 20mm along Y. The footprint is the union of a 60mm × 20mm rectangle (x in [-30, 30], y in [-10, 10]) and two semicircles of radius 10mm centered at (-30, 0) and (30, 0). The bottom face sits on the XY plane (z = 0 to z = 10). Output a single solid (no holes or other features).

Checks

params: {
  "type": "valid_solid"
}

details: {
  "error": "parse: Invalid JSON vcad file: invalid value: expected key to be a number in quotes at line 4 column 5",
  "reason": "fatal evaluation error"
}

params: {
  "type": "bbox",
  "min": [
    -40,
    -10,
    0
  ],
  "max": [
    40,
    10,
    10
  ],
  "tolerance_mm": 0.2
}

details: {
  "reason": "no valid solid to measure"
}

params: {
  "type": "mass_props",
  "volume_mm3": 15141.59,
  "center_of_mass": [
    0,
    0,
    5
  ],
  "tolerance_pct": 1
}

details: {
  "reason": "no valid solid to measure"
}

params: {
  "type": "step_roundtrip",
  "tolerance_pct": 1
}

details: {
  "reason": "no valid solid to round-trip"
}

Tool calls

{
  "model": "claude-haiku-4-5-20251001",
  "max_tokens": 8000,
  "system_chars": 1674,
  "user_chars": 500
}

What the model built

.vcad source

{
  "version": "0.1",
  "nodes": {
    "rect": {
      "id": "rect",
      "name": "Central rectangle",
      "op": {
        "type": "Cube",
        "size": {"x": 60, "y": 20, "z": 10}
      }
    },
    "rect_translated": {
      "id": "rect_translated",
      "name": "Rectangle centered",
      "op": {
        "type": "Translate",
        "child": "rect",
        "offset": {"x": -30, "y": -10, "z": 0}
      }
    },
    "cyl_left": {
      "id": "cyl_left",
      "name": "Left semicircle cylinder",
      "op": {
        "type": "Cylinder",
        "radius": 10,
        "height": 10,
        "segments": 32
      }
    },
    "cyl_left_translated": {
      "id": "cyl_left_translated",
      "name": "Left semicircle positioned",
      "op": {
        "type": "Translate",
        "child": "cyl_left",
        "offset": {"x": -30, "y": 0, "z": 0}
      }
    },
    "cyl_right": {
      "id": "cyl_right",
      "name": "Right semicircle cylinder",
      "op": {
        "type": "Cylinder",
        "radius": 10,
        "height": 10,
        "segments": 32
      }
    },
    "cyl_right_translated": {
      "id": "cyl_right_translated",
      "name": "Right semicircle positioned",
      "op": {
        "type": "Translate",
        "child": "cyl_right",
        "offset": {"x": 30, "y": 0, "z": 0}
      }
    },
    "rect_and_left": {
      "id": "rect_and_left",
      "name": "Rectangle union left semicircle",
      "op": {
        "type": "Union",
        "left": "rect_translated",
        "right": "cyl_left_translated"
      }
    },
    "stadium_bar": {
      "id": "stadium_bar",
      "name": "Stadium-shaped flat bar",
      "op": {
        "type": "Union",
        "left": "rect_and_left",
        "right": "cyl_right_translated"
      }
    }
  },
  "materials": {},
  "part_materials": {},
  "roots": [
    {
      "root": "stadium_bar",
      "material": "default"
    }
  ]
}

generated 2026-06-19T01:47:56.111Z · static site, regenerate with npm run build -w @mecheval/leaderboard