Mesh rebuild freecad knob

GPT-6 Astra, effort high$1.742m 20s2m 16s waiting on the model4 builds

Reference
iso
front
back
top
bottom
left
right

96of 100

built: 100
geometry: 93
AI judge: 7 of 7

What the AI judge checked

Pass:The overall form matches the reference: the same kind of object, the same silhouette from the matching angle
- Opus 4.8: pass: The rendered part is a round cylindrical knob with a chamfered top edge, matching the reference form and silhouette.
- GPT-5.6 Sol: pass: The produced part has the same round cylindrical knob silhouette as the reference in the matching angled and side views.
Pass:Proportions match: the relative sizes of the major dimensions agree with the reference within what the eye can judge
- Opus 4.8: pass: The diameter-to-height ratio of the rendered cylinder matches the reference squat disc proportions.
- GPT-5.6 Sol: pass: The diameter-to-height ratio and chamfer width visually agree with the reference.
Pass:Every major feature visible in the reference (holes, slots, bosses, tabs, lips) is present in the result
- Opus 4.8: pass: The chamfered top edge and hex socket are both present as in the reference.
- GPT-5.6 Sol: pass: The produced part includes the reference's cylindrical body, top-edge chamfer, rounded lower edge, and underside hex socket.
Pass:Those features sit where the reference has them
- Opus 4.8: pass: The chamfer is on the top edge and the hex socket is centered on the underside, matching reference placement.
- GPT-5.6 Sol: pass: The chamfer follows the upper perimeter and the hex socket is centered on the underside as in the reference.
Pass:Nothing is present that the reference does not show — no decorative or unexplained geometry
- Opus 4.8: pass: No extra decorative or unexplained geometry appears beyond the cylinder, chamfer, and hex socket.
- GPT-5.6 Sol: pass: No decorative or unexplained geometry is visible beyond the features shown in the reference.
Pass:The top edge is chamfered, not sharp
- Opus 4.8: pass: The isometric and top views clearly show a beveled chamfered top edge rather than a sharp edge.
- GPT-5.6 Sol: pass: A distinct sloped annular face is clearly visible around the top edge.
Pass:A hexagonal socket is visible in the bottom view
- Opus 4.8: pass: The bottom views clearly show a hexagonal socket at the center of the underside.
- GPT-5.6 Sol: pass: The bottom view clearly shows a centered hexagonal socket.

Measured

✓ watertight: true == true
✓ one sub-part named knob: ok
✓ volume within 3 % of the mesh: ok
✓ bounding box within 0.5 mm of the mesh: ok
✓ symmetric difference under the measured floor: ok
✓ the socket clears a 8 mm key across the flats: ok
✗ the socket is hexagonal, not round: predicate returned false
✓ the socket is 6 mm deep: ok
✓ the imported knob is still declared as an import: ok
✓ asked the oracle at most once: ok
✓ sweep diameter=20: diameter tracks the control: ok
✓ sweep diameter=40: diameter tracks the control: ok
✓ sweep height=13: height tracks the control: ok
✓ sweep height=23: height tracks the control: ok

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Run baseline-2026-092026-09-10commit 41aec7daspend $339.70 + $48.02 AI judging, 7 unpricedOther runs: 2026-09-04T20-02-10-stage2-hard-cases, 2026-09-04T19-48-31-screen-14-fixed