DSS-M.06.01 — Hole Edge Micro-Chips (excess)

Hole edge micro-chips (excess) are small, discrete chiplets at the perimeter of a drilled hole or machined slot that exceed normal manufacturing artifacts and/or intrude onto the exposed face. They present as bright faceted nicks; at higher severities, short chip flanks point inward from the perimeter. Classification is appearance-only per VIS (method-agnostic). Inspect under VIS lighting/geometry after Non-Invasive Reveal; record surface numbering and worked-surface status on Forms:

• Scattered pin-to sub-mm chips around a hole/slot, often biased to the exit side of drilling.
• Bright, sparkly facets in raking light; some chips may just kiss the face (minimal intrusion), others show tiny flanks.
• Can be symmetric (ring) or quadrant-heavy (tool exit vector); distinct from a uniform exit-lip burr.

Surface-catch class (MSRT)

• Chips confined to the perimeter edge (no face intrusion): typically SC-0 at the face.
• Chips that break onto the face: SC-1 (slight) to SC-2 (clear) on a light, single non-marring pass. Prefer polymer stylus on suspected coated faces; MSRT supports classification, not acceptance.

Visual signature

• Discrete, faceted nicks; at escalation, rough micro-flanks and occasional peppered micro-pits adjacent to the perimeter.
• Distinguish from uniform exit-lip (continuous edge burr, face SC-0) and from gross shelling (M.03.04).

Viewing / lighting Evaluate clean & dry at 12 / 36 / 72 in, both normal incidence and oblique sweep (~60°-120°) with raking light.

Location / access Log pane ID and surface numbering (#1-#4; laminate-internal). If fixed parallax shows a between-pane look-alike or the cue is otherwise inaccessible, record CAT-5 (out of in-place scope) and refer per protocol.

Assign CAT by appearance + MSRT + morphology (three-part cueing under VIS). Depth bands are indicative only-numeric measurement is not required.

• CAT-2 (Light): Few shallow micro-chips; SC-1 at intrusions; clean edges, no pronounced chip flanks; primarily a raking-only cue at close/standard view. Indicative depth: ~10-40 μm.
• CAT-3 (Moderate): More numerous chips with SC-2 (clear); minor chip flanks and occasional pepper; noticeable at standard view. Indicative depth: ~40-120 μm.
• CAT-4 (Severe): Dense ring/coalescing losses with rough, bright flanks, peppered pits, or incipient spalls; visible at standard & wide-field views. Indicative depth: ~120-300 μm+.
• CAT-5 (by location/condition): Through-thickness/running cracks, pane movement, or between-pane/inaccessible location → CAT-5 (non-repairable/out of in-place scope); document and refer.

CAT assignment is appearance-based; acceptance is separate (VIS §6). Do not “probe” with MSRT.

• vs. Factory exit-lip (P.03.04): Exit-lip is a continuous burr confined to the hole/slot; face reads SC-0 and no discrete bright facets. Do not classify as damage.
• vs. Edge “shelling” at holes/slots (M.03.04): Shelling shows larger, crescent spalls breaking onto the face with clear flanks; micro-chips are small, discrete.
• vs. Linear scoring (M.01): Scoring forms extended tracks; hole-edge micro-chips are peripheral and localized.
• vs. Coating anomalies (Co-family): Coating rub/patchiness lacks fracture facets; on a coated worked surface any anomaly is not permitted at acceptance (VIS §6.2.e).

• Photo set (VIS): 12 / 36 / 72 in; normal + oblique; include raking macros of representative micro-chips (resolve facet/flare) and at least one context frame showing the hole/slot geometry and whether chips break onto the face. Record distance/angle in-frame.
• MSRT result: Record SC-class (SC-0/1/2) with one light, non-marring pass on a representative chip that intrudes onto the face; polymer stylus on suspected coated faces.
• Forms: Pane ID; product family & surface numbering; worked surface Y/N; functional coating present on worked surface? (Y/N/Unknown); reveal status; lighting/time; geometry checklist; photos attached.
• Acceptance split: Post-restoration acceptance follows VIS §6 at 12/36/72 in; classification ≠ acceptance. Visible transition edges, chip-flank texture, and coating anomalies on coated faces remain disqualifying per category criteria.

• M.06.01 Hole Edge Micro-Chips (excess) - Discrete bright micro-chips at [hole/slot] perimeter on surface #___; [intrusion onto face: yes/no]. MSRT = SC-[0/1/2] on representative intrusion; [no/yes] chip flanks in raking macro. Visible at [12/36/72 in] under VIS geometry after Non-Invasive Reveal. Classification: CAT-[2/3/4] by morphology + MSRT; if cracks/between-pane → CAT-5. Forms + photo set completed per VIS; acceptance per VIS §6.