A full polishing range.
From cutting and one-step correction to final finishing.
A product comparison is weakened when each polished area receives a different residue-removal method. Record the inspection process alongside the compound and pad.
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Decide whether the trial concerns cutting, finish, wipe-off or a complete workflow. A whole-system comparison may intentionally include different approved cleaners; a comparison of polishing liquids needs those differences stated rather than hidden.
Use inspection products suitable for the paint and relevant polish systems. Do not force one cleaner onto every formula merely to make the test look uniform. Where approved methods differ, explain that limitation in the comparison design.
Record the cleaner, towel condition, amount and working sequence. Compare the same dry inspection stage under the same lighting. Changing the inspection method after seeing the first result introduces another variable that can affect interpretation.
Keep the observed finish and the inspection procedure together. State whether the result applies to the liquids alone or to their complete approved workflows. Repeat an unclear comparison with an agreed method before using it to support a purchasing or service claim.
No. Compatibility takes priority. Use appropriate approved methods and disclose differences that limit a direct comparison.