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Kernel rig: the flange beside the ledge graded on a volume range (the flange's two readings of its length)

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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jyviko
2026-10-31 08:57:13 -04:00
committed by jyviko
parent f6847c97c9
commit bfdb79418c
1 changed files with 7 additions and 3 deletions
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tests/kernel-cases/sheet-metal/978-edge-flange-beside-a-ledge-as-tall-as-its-setback/expected.json
+7 -3
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@@ -3,7 +3,11 @@
"tangency-labs/solidcraft#978"
],
"what": "a 90 degree inside flange of radius 1 on an edge that has a ledge beside it exactly as tall as the flange's setback (3 mm): sew failed with a degenerate edge",
"source": "invariants",
"method": "T = 2, flange R = 1: setback R + T = 3 and the ledge (x 97..100, y 0..3) is exactly that tall, so the trim line runs along the ledge's top; the right answer is one valid closed body (the ledge goes with the setback strip), with no graded volume because the flange's extent along the ledge has no single reading",
"body_count": 1
"source": "analytic",
"method": "T = 2, flange R = 1, inside: the setback R + T = 3 strips y 0..3 off the base, and the ledge (x 97..100, y 0..3) lies wholly in that strip, so the base left is x 0..97, y 3..60 (11058). The bend (a quarter annulus of radii 1..3, 2 pi a mm) and the panel (leg 20 - 3 = 17, 34 a mm) run along the edge either as far as the base's remaining edge (97) or the picked edge (100), the reading the case leaves open: V lies between 11058 + 97 (2 pi + 34) = 14965.468975 and 11058 + 100 (2 pi + 34) = 15086.318531; a flange missing, or the base left untrimmed by the setback, falls outside",
"body_count": 1,
"volume_mm3": [
14965.468,
15086.319
]
}