Plate with three longitudinal stiffening ribs and corner bolts A · A5 · a5-ribbed-plate-01

Expected

Prompt

Make a ribbed plate as a single solid. The top plate is 120mm × 80mm × 10mm with its bottom face at z = 10 and top face at z = 20, centered in X and Y (x in [-60, 60], y in [-40, 40]). Three stiffening ribs run along the full length of the plate (along X) on the underside: each rib is 120mm long × 8mm wide × 10mm tall (z = 0 to z = 10). Rib A is centered at y = -24: it spans x in [-60, 60], y in [-28, -20], z in [0, 10]. Rib B is centered at y = 0: it spans x in [-60, 60], y in [-4, 4], z in [0, 10]. Rib C is centered at y = 24: it spans x in [-60, 60], y in [20, 28], z in [0, 10]. Four bolt holes of diameter 8mm, axes parallel to Z, pass through the entire assembly height (z = 0 to z = 20), located at the four corners: (45, 30), (-45, 30), (-45, -30), (45, -30). Output a single solid.

Checks

{
  "type": "valid_solid"
}

{
  "type": "bbox",
  "min": [
    -60,
    -40,
    0
  ],
  "max": [
    60,
    40,
    20
  ],
  "tolerance_mm": 0.1
}

{
  "type": "mass_props",
  "volume_mm3": 120778.76,
  "center_of_mass": [
    0,
    0,
    12.78
  ],
  "tolerance_pct": 1
}

{
  "type": "hole_count",
  "diameter_mm": 8,
  "expected": 4,
  "diameter_tolerance_mm": 0.05
}

{
  "type": "hole_positions",
  "diameter_mm": 8,
  "positions": [
    [
      45,
      30,
      0
    ],
    [
      -45,
      30,
      0
    ],
    [
      -45,
      -30,
      0
    ],
    [
      45,
      -30,
      0
    ]
  ],
  "tolerance_mm": 0.2
}

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

Anti-cheese

{
  "max_solid_count": 1
}

Limits

{
  "max_tokens": 40000,
  "max_wallclock_sec": 240,
  "max_tool_calls": 40
}

Recent attempts

Runs (5)

generated 2026-06-17T03:16:07.266Z · static site, regenerate with npm run build -w @mecheval/leaderboard