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Coating Roughness on Directional Finishes: Measure the Specified Traverse
A profile measured along a directional texture can differ from one measured across it. The traverse direction must match the specification.
Updated · NANOLAB Knowledge
Practical approach
Mark the measurement orientation and use a suitable repeatable location plan.
A brushed panel can yield different profiles depending on how the probe crosses its texture.
Decision limits
Do not choose the direction that produces the most favourable value after inspection. Define the method in advance.
Related guidance
- RO Rejection and Recovery: Two Percentages That Measure Different Things
- Foam-Cannon Output Tests: Measure Consumption Without Guessing Panel Dilution
- Coating Roughness Measurements: Preserve the Filter and Evaluation Length
- Coating Workshop Sensors: Place Them Where the Work Happens
Method reference: Mitutoyo: surface roughness measurement. References describe their stated methods or products; they do not certify NANOLAB products or establish compatibility with an unlisted surface.
Ask NANOLAB about the exact product and intended use. Use the current product documentation for formulation-specific instructions.
Continue reading
RO Rejection and Recovery: Two Percentages That Measure Different Things
Calculate RO rejection and recovery separately, understand their different denominators, and compare systems under relevant conditions.
Foam-Cannon Output Tests: Measure Consumption Without Guessing Panel Dilution
The mix in a foam-cannon bottle is not automatically the concentration reaching the vehicle. A practical output test should preserve that distinction.
Coating Roughness Measurements: Preserve the Filter and Evaluation Length
Roughness results depend on how the measured profile is processed and evaluated. Method settings belong with the number.