On mirror-finish materials such as stainless steel or glass, the camera preview looks overexposed, the contour edges disappear, template matching fails, or the recognition score stays extremely low.
Troubleshooting Steps
- Apply a layer of matte masking tape over the material surface to break up the mirror reflection. Press it flat with no air bubbles so no new height difference is created.
- Alternatively, spray a thin coat of water-soluble developer agent (white matte paint) over the surface, and wipe it off with clean water right after engraving.
- Place a sheet of black matte paper under the material — the extra contrast greatly improves edge detection on bright mirror-finish parts.
- Wipe the surface with a lint-free cloth before recognition so fingerprints and oil stains do not create localized highlights.
- Keep batches consistent: parts from the same batch should have the same polishing direction, and avoid mixing batches on one job.
- Re-run auto-recognition after each change, and only start the job once the recognition score is high.
