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Kernel rig: 1985's enclosure is 78 x 77 (74 and 73 inside, 2 mm walls); its volume 38063.827 by hand

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
jyviko
2026-10-31 09:25:57 -04:00
committed by jyviko
parent 57edcf61ac
commit a250062c29
1 changed files with 5 additions and 5 deletions
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tests/kernel-cases/crashes/1985-step-export-enclosure-screw-hole/expected.json
+5 -5
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@@ -5,9 +5,9 @@
],
"what": "a small enclosure (rounded box, inner cut, corner gusset with a screw hole, two standoffs, USB cut-out) whose STEP export never finished (the export meshes its own file back)",
"source": "analytic",
"method": "the script builds one connected part: the export must finish, and the part is one valid closed solid. Body sketch: the rounded rectangle 0..80 x 0..79, corners r 3 (straights 74 and 73), area 80*79 - (4 - pi)*9 = 6312.274, extruded 37.5: 236710.288. Cavity box (2,2,2.5) 74 x 73, open at the top: - 74*73*35 = 189070. Gusset (68,67,2.5) 8 x 8 x 35 in the cavity's back corner: + 2240. Screw hole r 1.25 at (72,71) from z 29.5, inside the gusset: - pi 1.25^2 8 = 39.270. Two standoffs r 2.5, 3 high at (30.11, 69.04) and (58.05, 69.04) on the floor, clear of the walls and the gusset: + 2 * 58.905. USB cut-out (21.33..31.33, -1..3, 5..11) through the 2 mm front wall: - 10*2*6 = 120. V = 49838.83. Box: the outline's 0..80 x 0..79, z 0..37.5",
"method": "the script builds one connected part: the export must finish, and the part is one valid closed solid. Body sketch: the rounded rectangle 0..78 x 0..77 (outer_width = 74 + 2 * 2, outer_depth = 73 + 2 * 2), corners r 3, area 78*77 - (4 - pi)*9 = 5998.274, extruded 37.5: 224935.278. Cavity box (2,2,2.5) 74 x 73, open at the top: - 74*73*35 = 189070. Gusset (68,67,2.5) 8 x 8 x 35 in the cavity's back corner: + 2240. Screw hole r 1.25 at (72,71) from z 29.5, inside the gusset: - pi 1.25^2 8 = 39.270. Two standoffs r 2.5, 3 high at (30.11, 69.04) and (58.05, 69.04) on the floor, clear of the walls and the gusset: + 2 * 58.905. USB cut-out (21.33..31.33, -1..3, 5..11) through the 2 mm front wall: - 10*2*6 = 120. V = 38063.827. Box: the outline's 0..78 x 0..77, z 0..37.5",
"body_count": 1,
"volume_mm3": 49838.83,
"volume_mm3": 38063.827337,
"bbox": {
"min": [
0.0,
@@ -15,9 +15,9 @@
0.0
],
"max": [
80.0,
79.0,
78,
77,
37.5
]
}
}
}