Thick ring with stepped counterbore from each end A · A6 · a6-compound-bore-ring-01

Expected

Prompt

Make a stepped-bore ring as a single solid. The outer body is a cylinder of diameter 80mm and height 50mm, base on the XY plane (z = 0 to z = 50), centered on the Z axis. From the bottom face, subtract a coaxial blind bore of diameter 30mm that extends 25mm deep (z = 0 to z = 25). From the top face, subtract a coaxial blind bore of diameter 50mm that extends 25mm deep (z = 25 to z = 50). The two bores meet exactly at z = 25, forming a stepped interior: a narrow (30mm) chamber below and a wide (50mm) chamber above, connected at the mid-plane. The outer wall is 25mm thick at the bottom half and 15mm thick at the top half. Output a single solid.

Checks

{
  "type": "valid_solid"
}

{
  "type": "bbox",
  "min": [
    -40,
    -40,
    0
  ],
  "max": [
    40,
    40,
    50
  ],
  "tolerance_mm": 0.1
}

{
  "type": "mass_props",
  "volume_mm3": 184568.57,
  "center_of_mass": [
    0,
    0,
    22.87
  ],
  "tolerance_pct": 1
}

{
  "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 2026-06-17T03:16:07.269Z · static site, regenerate with npm run build -w @mecheval/leaderboard