Shell data is stored as geometry, resin family, texture, screw boss diameter, and the tiny human decision that made the seam visible.
engraved: xbom.wikiexpanded bill of materials / specimen 00
XBOM // sealed object
molded shellpolycarbonate transparency
inner boardserviceable core
hex screwsunfastening event
rail 01 / Shell
Transparent shell, lifted from the gasket line.
upper housing
lower tray
coral gasket silhouette
folded manual corner
shell tolerance ±0.18mm
shell tolerance ±0.18mm
negative-space clip void
missing latch marker
missing latch marker
rail 02 / Fasteners
Fasteners orbit the opened housing instead of forming a row.
Each screw keeps its torque history, compatible driver, plating warning, and where it tends to roll when the object is opened.
rail 03 / Board
The board appears as a museum specimen under acetate.
ceramic chipribbon socketfuseunknown
flexible ribbon cable
do not pry from this edge
XBOM:board/core REV:03C HASH:8A7CFF
Board entries connect chips to suppliers, substitutes, failure symptoms, and the service-manual paragraph that actually explains them.
rail 04 / Materials
Materials cluster as swatches with magnified cross sections.
layered cross-section
Every swatch records source, recyclability, finish, toxicity notes, alternatives, and the reason the original designer chose it.
rail 05 / Origins
Supplier ghosts travel on map-like ribbons, not charts.
supplier ghost
unverified mold house
unverified mold house
provenance stamp
lot 3F / graphite mark
lot 3F / graphite mark
Origins are shown as relationships: a ribbon between maker, material, revision, and confidence, with uncertainty left visible.
rail 06 / Substitutions
Compatible parts hover as misaligned ghosts.
original latch
compatible substitute
obsolete but fits
compatible substitute
fit: 92% / risk: visible seam
fit: 92% / risk: visible seam
Substitution entries preserve what changes: tolerance, material feel, repair confidence, and the small misalignment you will see after reassembly.
rail 07 / Revision Dust
Reassembled, but knowledge keeps the seams glowing.
annotated object
revision conflict
03C ⇄ 03DXBOM wiki ends with the thing fitting together again, but no longer sealed from understanding: every seam has a name, history, and possible future.