What needs to be clarified
The task is to compare particles and coating samples, assessing material features separately from an explanation of the particular event.
Materials to prepare
- The tool and particles, retained packaging and discovery information.
- Door reference samples identifying sampling locations and circumstances.
- Damage photographs and records of painting, repair and storage.
What to compare
- Check each sample’s link to its particular surface and location.
- Compare accessible composition, structure and layer-sequence features.
- Distinguish material similarity from support for a contact explanation.
Possible outcome of the analysis
A possible result is a reasoned comparison listing supported similarities, differences and remaining limitations.
Limits of the conclusions
Matching colour proves neither a unique source nor the timing of particle transfer or mechanism of door damage.