LEGO box dent damage grading.
AI dent-detection grading for sealed LEGO boxes.
How the AI sees it.
A dent is a localized inward deformation on a box face — typically from a point impact (corner of another box, dropped item, finger pressure). Dents can be cosmetic (surface paper only) or structural (cardboard substrate compressed).
The grader perspective.
Cosmetic dents drop the surface axis 1–2 points; structural dents that change the box geometry drop the structural axis and often the corners axis too because they typically originate at or near a corner. Graders treat dents on the front face more punitively than back or side.
↦ Scored on the BrickGauge surface axis.
Dent damage by tier.
Each tier maps to a defect signal and the grade ceiling it forces. Pre-grade your box with BrickGauge to see which tier yours lands in.
| Tier | Signal | Grade cap |
|---|---|---|
| MINT | None | AFA 90+ |
| NM | ≤5mm sub-1mm depth, back/side only | AFA 85 |
| EX | 5–15mm dent, any face | AFA 80 |
| VG | >15mm or structural deformation | AFA 75 or below |
Don’t create the damage.
- 01Never stack hard objects on a LEGO box — the corner of another box is the most common dent source.
- 02Ship with 3+ inches of padding on every face; air pillows alone aren't enough for heavy sets.
- 03Avoid grip pressure when picking up the box — the cardboard substrate dents from sustained finger pressure even without visible cosmetic damage.
- 04Inspect deliveries on arrival and document any dents before opening the outer carton.
Browse the rest.
See your dent damage scored.
Upload six photos and BrickGauge measures the dent damage on your specific box, scores it on the surface axis, and rolls it into an overall verdict. Two free inspections on signup — credits never expire.