INDUSTRY FIELD GUIDE
Carbon and graphite product data for AI grade and dimension records
Carbon and graphite products include articles with distinct identity and geometry.
NAICS 335991 · Carbon and Graphite Product Manufacturing
Carbon and graphite products include articles with distinct identity and geometry. The Census manual provides manufacturing scope. An original electrical-brush exercise can connect the declared grade to a component's drawing and sample evidence. Census carbon-product scope
Create fictional brush-shaped props, grade cards and an inspection sheet. Give two parts the same outer dimensions but different grade references and lead-position markers. Ask the assistant which record matches the order. Include a general material card beside a specimen report and an image that hides one marker. The key should preserve the source scope and missing view.
Annotate part, grade reference, marker position, specimen, drawing revision and evidence view. Evaluate with a new outline and naming scheme. Score dimensions used as complete identity, general material information treated as specimen evidence and hidden features guessed independently. The exercise should not infer electrical or wear performance from appearance.
Use original designs and invented readings. Customer applications, proprietary material recipes, licensed specifications and laboratory reports require authority and qualified review. Describe the identity-and-geometry task and checked key in the licensing proposal. Establish buyer requirements before further preparation or capture.
Discuss this original manufacturing sample with Fiund
Original Fiund exercise
Geometry match leaves grade identity open
The contributor uses paper brush silhouettes and fictional grade labels. The dimensions are arbitrary.
| Record | Source | What it records |
|---|---|---|
| 1 | Order card | Part C7, grade G2, width 6 mm. |
| 2 | Inspection | Sample C7 width 6 mm; grade stamp unreadable. |
| 3 | Catalog note | G1 and G2 share the same geometry. |
Question for the model
Can the observed sample be identified as grade G2?
Show the reference answer and checks
No. Record 2 supports the part marking and width in record 1, but the grade stamp is unreadable. Record 3 rules out identifying G2 from geometry alone. Store a documented width match and unresolved grade rather than marking the entire sample a match.
- Inferring material grade from shape
- Treating an unreadable stamp as a negative G2 observation
Fields to preserve
- grade_mark_visibility
- Gates positive grade identity
- measured_width
- Records dimensional evidence
- geometry_family
- Shows when distinct grades look alike
Test another case
Include a readable G1 stamp and require distinguishing a definite grade mismatch from missing evidence.
No real brush materials, machine selection advice, electrical specifications or tolerances.
Discuss a contribution
Describe the sources you control, the task they could support and what has already been checked. Use the existing-data assessment for an archive or the collection brief for a new recording project. The contributor agreement defines Fiund’s licensing authority and compensation. A guide or fictional exercise does not establish an accepted collection or a sale.