Technical guide

How to Select a Polishing Pad

Q: Can one pad correct an entire vehicle?

For substantial correction, multiple clean pads provide more consistent cut and lower heat.

Select the pad as part of a system: paint condition, machine, compound, pad material, speed, pressure and operator technique all change cut and finish.

Updated 23 June 2026 · Always begin with a test spot

Least-aggressive rule: use the mildest pad-and-product combination that removes the target defect within a reasonable number of passes.

1. Define the correction goal

Inspect the finish in strong, directional light after washing and decontamination. Separate removable surface contamination from defects in the coating itself. Deep scratches that catch a fingernail, exposed basecoat, thin edges and previously repaired areas may not be suitable for aggressive correction.

Heavy correctionSevere oxidation, sanding marks or deeper swirls may require wool, microfiber or firm foam—after thickness and finish checks.

One-step correctionModerate defects with a good finish often suit medium foam or a refined wool/microfiber system.

Final refinementSoft finishing foam and a fine polish are normally used to improve gloss and remove haze.

2. Pad-selection table

Pad type	Typical behaviour	Best starting use	Main cautions
Twisted wool	High cut, fast defect removal, strong fibre action	Heavy correction on suitable paint with a rotary or compatible machine	Can create haze, holograms and heat; avoid edges and thin paint.
Lamb’s wool / refined wool	Strong to medium correction depending on fibre and product	Correction or polishing where wool speed is useful	Keep fibres clean and fluffed; finish may require a foam refinement step.
Microfiber cutting pad	High surface area and strong cut on compatible dual-action systems	Moderate to heavy correction with controlled finish	Loads quickly; compressed fibres reduce performance and increase heat.
Firm / hard foam	Higher mechanical cut with more controlled fibre-free action	Correction and one-step work	Can haze soft paint; pressure and pad temperature matter.
Medium foam	Balanced cut and finish	General polishing, one-step correction and refinement	May be too mild for deep defects or too firm for very soft paint.
Soft finishing foam	Low cut, high conformity and gloss potential	Final polish, glaze or compatible finishing product	Will not remove meaningful defects if the previous stage is incomplete.

3. Match pad, machine and product

A pad label such as “hard” or “soft” does not define performance by itself. Diameter, thickness, cell structure, fibre length, backing plate, machine orbit and product lubrication change the result.

Rotary machine: fast correction and direct drive, but higher risk of holograms and local heat.
Dual-action machine: safer movement pattern and good finishing, but pad rotation can stall on curves or under excess pressure.
Compound: increases abrasive cut; pair it with the least aggressive pad that meets the objective.
Polish: designed for refinement; using it on an overly aggressive pad can still create haze on soft paint.
Backing plate: should support the pad correctly without extending beyond it.

4. Run a controlled test spot

Choose a representative area away from sharp edges and body lines.
Measure paint thickness where professional work and equipment permit; compare multiple areas, not one reading.
Prime the pad lightly according to the product and pad system.
Work a small section with controlled passes, pressure and speed.
Wipe residue with a clean microfiber and inspect under direct light.
Confirm that the defect is genuinely removed rather than temporarily filled.
Only then repeat the method across the panel.

Stop condition: do not chase a deep defect through clearcoat. If the remaining mark is safer than further material removal, leave it.

5. Control heat, cleanliness and pad loading

A clogged pad cuts inconsistently and can scour the finish. Use several pads for a large job rather than forcing one loaded pad through the entire vehicle or surface.

Clean wool and microfiber fibres frequently using an approved method.
Brush or blow pads only in a safe way recommended for the system; control dust.
Swap saturated foam pads and wash them according to manufacturer instructions.
Keep pads flat where appropriate; do not polish aggressively on sharp edges.
Reduce section size when temperature rises or product dries too quickly.
Do not mix products on the same pad unless the system explicitly allows it.

6. Diagnose common correction problems

Problem	Likely causes	First corrections
Haze after compounding	Pad too aggressive, soft paint, residue, high speed or incomplete refinement	Clean surface, change to medium/soft foam and a finer polish, retest.
Holograms	Rotary trails, tilted pad, aggressive wool or poor finishing step	Refine with a dual-action machine or appropriate finishing process.
Pad skipping or grabbing	Too little lubrication, contaminated pad, excessive pressure, hot panel	Stop, clean/cool the area, correct product amount and reduce pressure.
Correction stops improving	Pad loaded, rotation stalled, product spent or defect too deep	Clean/change pad, verify technique and reassess whether further removal is safe.
Dusting	Overworked product, hot/dry conditions, too much product or incompatible combination	Shorten cycle, clean pad, use the recommended product amount and working conditions.

7. Build a repeatable pad sequence

Record paint type, defect, machine, pad, product, speed, pressure, number of passes and final inspection. Keep correction pads separate from finishing pads and store them clean, dry and protected from contamination.

Typical route: test medium foam first → move to firmer foam or wool only if required → refine with medium/soft foam → inspect in direct light before protection.

Frequently asked questions

Which pad removes scratches fastest?

Wool, microfiber and firm foam can provide high cut, but the fastest option is not automatically the safest. Scratch depth, paint thickness, machine and compound determine the correct combination.

Can one pad correct an entire vehicle?

It is poor practice for substantial correction. Pads load with residue and removed paint, so multiple clean pads provide more consistent cut and lower heat.

Do I always need a finishing step after wool?

Often yes, especially on dark or soft paint, because wool can leave haze or rotary trails. Inspect under direct light rather than assuming the finish is complete.