Collection: Polishing Foam

A polishing foam pad contains no abrasive. It carries the compound, holds it against the part and controls pressure and heat. The compound does the work; the foam decides how it works.

The 2 references in the catalogue

• 3M Perfect-It 33042, finishing foam.
• Mirka Polarshine, wool pad.

See also our polishing products, our polishing liquids and our sisal cotton discs.

Foam or wool

Wool cuts fast and generates a lot of heat. It corrects marked defects, sanding scratches or oxidation, but it leaves its own marks, often a haze of holograms visible in low-angle light. It never finishes a job.

Foam generates little heat and gives the most even finish. Its density determines its aggressiveness: a firm foam cuts, a soft foam buffs. It is the one that goes last.

The usual sequence is therefore wool with a cutting compound, then firm foam, then soft foam with a finishing compound.

One foam per compound, never the other way round

A foam loaded with cutting compound keeps its grains even after washing. Reusing it for buffing brings those grains back onto an already polished surface and scratches it, often invisibly in the workshop and very visibly outside.

The rule is simple and costs less than starting a part again: one foam per compound, labelled, stored separately.

Care

A foam gets clogged with dried compound and residue, which hardens it and makes it aggressive without you noticing. Cleaning it with lukewarm water after use and letting it dry flat restores its properties. A foam that has hardened must be replaced, not salvaged: it will mark.