run 20260428T211332Z-40dc

Summary

Prompt

Make a stepped shaft along the Z axis: a base cylinder of diameter 40mm and height 10mm sitting on the XY plane (z = 0 to z = 10), with a smaller coaxial cylinder of diameter 20mm and height 15mm stacked directly on top (z = 10 to z = 25). The result is a single solid.

Checks

params: {
  "type": "valid_solid"
}

details: {
  "root_count": 1,
  "solids_produced": 1
}

params: {
  "type": "bbox",
  "min": [
    -20,
    -20,
    0
  ],
  "max": [
    20,
    20,
    25
  ],
  "tolerance_mm": 0.1
}

details: {
  "actual_max": [
    0,
    0,
    25
  ],
  "actual_min": [
    -40,
    -40,
    0
  ],
  "deviation_max": [
    -20,
    -20,
    0
  ],
  "deviation_min": [
    -20,
    -20,
    0
  ],
  "max_abs_deviation_mm": 20,
  "tolerance_mm": 0.1
}

params: {
  "type": "mass_props",
  "volume_mm3": 17278.76,
  "tolerance_pct": 1
}

details: {
  "volume": {
    "actual_mm3": 18208.430463392484,
    "deviation_pct": 5.380423499096495,
    "pass": false,
    "spec_mm3": 17278.76,
    "tolerance_pct": 1
  }
}

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

details: {
  "per_solid": [
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          0,
          0,
          25
        ],
        "original_min": [
          -40,
          -40,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          0,
          0,
          25
        ],
        "roundtripped_min": [
          -40,
          -40,
          0
        ],
        "tolerance_mm": 0.6184658438426491
      },
      "index": 0,
      "pass": true,
      "volume": {
        "deviation_pct": 0,
        "original_mm3": 18208.430463392484,
        "pass": true,
        "roundtripped_mm3": 18208.430463392484
      }
    }
  ],
  "tolerance_pct": 1
}

Tool calls

{
  "model": "claude-haiku-4-5-20251001",
  "max_tokens": 8000,
  "system_chars": 1632,
  "user_chars": 331
}

What the model built

isometric render via vcad-render · the model's actual .vcad output, faceted at 28 segments per cylinder · download 20260428T211332Z-40dc.vcad

.vcad source

{
  "version": "0.1",
  "nodes": {
    "1": {
      "id": 1,
      "name": "base_cylinder",
      "op": {
        "type": "Cylinder",
        "radius": 20,
        "height": 10,
        "segments": 32
      }
    },
    "2": {
      "id": 2,
      "name": "base_centered",
      "op": {
        "type": "Translate",
        "child": 1,
        "offset": {
          "x": -20,
          "y": -20,
          "z": 0
        }
      }
    },
    "3": {
      "id": 3,
      "name": "top_cylinder",
      "op": {
        "type": "Cylinder",
        "radius": 10,
        "height": 15,
        "segments": 32
      }
    },
    "4": {
      "id": 4,
      "name": "top_positioned",
      "op": {
        "type": "Translate",
        "child": 3,
        "offset": {
          "x": -10,
          "y": -10,
          "z": 10
        }
      }
    },
    "5": {
      "id": 5,
      "name": "stepped_shaft",
      "op": {
        "type": "Union",
        "left": 2,
        "right": 4
      }
    }
  },
  "materials": {},
  "part_materials": {},
  "roots": [
    {
      "root": 5,
      "material": "default"
    }
  ]
}

generated 2026-06-19T01:47:55.385Z · static site, regenerate with npm run build -w @mecheval/leaderboard