Polishers and paint correction

A dual action polisher does two things at once: it spins, and the whole spindle orbits. The orbit is the throw, measured in millimeters, and it is the single number that separates the tiers. A 8mm throw machine covers less paint per pass and generates less heat; a 15mm or 21mm machine covers more and cuts faster, but needs a steadier hand near edges and body lines.

Everything else — wattage, speed dial, counterweight, ergonomics — matters, but it matters second. A 9mm machine with the right pad and a modern compound will correct paint that an inexperienced operator cannot correct with a long-throw machine, because the long throw punishes mistakes faster.

A plausible first correction kit is a machine, four pads and two liquids. Buyers routinely spend 70% of the budget on the machine and then run it with whatever pads came in the box — which is backwards, because the pad and the liquid are what touch the paint.

• Pads, not machines, do the cutting. A microfiber or firm foam cutting pad on a modest machine out-corrects a soft finishing pad on an expensive one, every time.
• Two liquids beats four. A modern one-step like a hybrid compound covers most of what a home detailer faces. Add a dedicated finishing polish only when you can see what it is fixing.
• Buy pads in multiples. A saturated pad stops cutting. Four of the same pad is a real upgrade; one each of four types is a shopping list, not a kit.
• Backing plate size has to match. A 5-inch plate with 5.5-inch pads is standard; mixing sizes across brands causes the pad edge to flex and the finish to go hazy.

Our ranked machines are in the dual action polisher roundup, and if this is a first machine the shorter, more opinionated list is the beginner roundup. For the consumables, see polishing pads and compounds and polishes.

Correction is the third stage of a five-stage job, and doing it out of order wastes the work. You wash, you decontaminate, you correct, you protect, and then you maintain. Polishing a car that still has bonded iron and tar in the paint drags that contamination across the panel under a pad — which is how a correction session ends with more marring than it started with.

So before the machine comes out: a proper two bucket wash, an iron remover, and a clay bar if the paint still feels rough through a plastic bag. Afterwards the paint is bare and unprotected, which is the moment to apply a ceramic coating or a sealant — not next weekend.

The full sequence with timings is in the detailing order of operations, which is the page to read if you have ever wondered whether you clay before or after you polish.

We have not run these machines side by side on the same panel, and no page here pretends otherwise. What you get instead is the published specification for each one, cited, plus the failure patterns that show up consistently across verified-purchase reports and enthusiast forums — bearing noise at speed six, backing plates that wobble out of true, counterweights that buzz. Those patterns are genuinely useful and they are the honest version of what we can know.

Where a manufacturer does not publish a figure, the spec table says Not published rather than carrying an estimate. There are more guessed numbers in this category than almost any other, and an invented wattage is worse than a blank.

Last reviewed October 5, 2026. Think a figure here is wrong? Tell us at contact@detailingandwax.com and we will check it, fix it and date the correction — see our editorial policy.