Polishing & Paint Correction2 min read

Polishing Spot Repairs: Preserve a Defect Reference

Keep a stable visual reference during local paint correction so changing light and repeated inspection do not move the agreed stopping point.

Updated · NANOLAB Knowledge

A local scratch can become an endless correction target when each inspection uses a new light angle. Preserve a reference at the beginning so the stopping decision remains tied to the agreed improvement and the condition of the paint.

Record the mark before work

Clean and inspect the area using a suitable process. Identify the mark in a panel photograph with surrounding features visible. Photograph it under the planned directional light and from a wider normal viewing position. Keep the camera exposure consistent where practical.

Record whether the brief is to reduce the mark’s visibility or attempt removal only where the assessed finish supports it. Do not promise complete removal from a photograph or a fingernail test. Neither provides a complete measurement of the remaining film.

Keep one inspection geometry

After a controlled correction cycle and compatible residue removal, return the light and viewing position to their recorded locations. Inspect the local area and neighbouring finish together. A tighter crop can make a residual mark look more significant than it appeared in the original service brief.

Keep an untouched neighbouring reference where possible. Compare the corrected zone for unintended haze or texture difference as well as scratch visibility. The surrounding reflection is part of the result.

Stop for the right reason

If further cycles offer little useful improvement, or the assessment no longer supports abrasion, stop and document the remaining mark. Changing the light to find an even less visible remnant does not establish that further removal is worthwhile.

Show the customer the same before-and-after views and explain the preservation decision. Retain the record so a later return visit does not treat the residual scratch as a newly discovered defect requiring another full attempt.

Use the compound selection guide for the broader process and the repair texture guide when local correction changes the surrounding reflection.