For a first machine, we would choose a corded, free-spinning DA with a short throw and a 125mm backing plate, then match the pads and liquid to the paint: the AutoBead Downforce Medium Cut pad and AutoBead Medium Cut Compound are a correction pairing, not automatic starting choices. We explain the specifications and selection criteria below so you can build a suitable setup.
What is the best DA polisher in the UK?
For most first-time users, the best DA polisher is a corded, free-spinning machine with a short throw of around 9mm to 12mm, a 125mm (5 inch) backing plate and variable speed. That combination is forgiving on curves and edges and makes it easier to keep the pad turning while you learn. Step up to a 15mm or longer throw when you want faster correction on large flat panels and can keep the pad rotating. We judge machines on those points rather than on wattage or brand; the machines and kits we have in now are in our dual action polisher range.
This guide explains orbit size, backing plates, corded or cordless and the difference between DA and rotary machines, and which pads and compounds to use with them.
DA or rotary: which do you need?
A free-spinning DA combines an offset orbit with pad rotation that can stall under load. We usually recommend this type as a manageable starting point, but it can still remove too much paint or damage edges. Thin, repaired or sensitive paint needs assessment rather than confidence in the machine type alone.
A rotary polisher drives the pad straight round. It cuts hard and suits heavy correction and paint levelling, but it builds heat quickly, so edges, trim and sharp body lines need taping off and heavy cut or wool pads need low speeds. That makes a rotary a machine for experienced hands, and a DA the safer first machine.
A third type, forced rotation, orbits like a DA but uses gears to drive the pad round as well.
What does orbit size mean on a DA polisher?
The orbit, or throw, is the size of the small circle the pad makes as it oscillates, in millimetres. Short-throw machines sit around 9mm to 12mm and long-throw machines around 15mm to 21mm. A longer throw moves the pad further with each orbit, so it covers more paint per pass and corrects faster.
The trade-off is technique. Our advice for long-throw machines is to use low-profile foam pads made for them, avoid heavy downward pressure, and draw a pen line on the backing plate so you can see the pad is still turning. A shorter throw keeps the pad turning more easily on curves and edges, which makes it the simpler machine to learn on.
How do you choose a DA polisher?
We check five things before wattage: the throw, the backing plate, speed control, cable or battery, and what comes in the box.
| What to check | What we look for | Why it matters |
|---|---|---|
| Throw (orbit) | 9mm to 12mm for a first machine; 15mm or more for faster work on large panels | A short throw keeps the pad turning more easily on curves; a long throw covers more paint per pass but needs more control |
| Backing plate | 125mm (5 inch) for most panels, with a 75mm (3 inch) plate as an option | The plate sets the pad size, and a smaller one reaches bumpers, pillars and spoilers |
| Speed control | A variable speed dial with a low starting speed | You spread the product at low speed, then raise it to work the polish |
| Corded or cordless | Corded for long sessions; cordless for mobile work | A cord never runs flat; a battery machine needs batteries and a charger |
| What comes in the box | Backing plates, pads, cable length and a carry case | A complete kit can cost less than buying plates and pads separately |
We would not choose on wattage alone. Grip, balance, panel shape, pad compatibility and the complete kit cost matter too. Use only the backing plates and pad sizes approved for the exact machine, and check a test section before committing to a correction approach.
Pads and compounds for your DA
We would choose the machine first, then match the exact pad diameter, backing and intended use. The options below illustrate correction stages; they do not mean every size listed fits a 125mm backing plate. AutoBead makes a matched set: three foam pads and three compounds that step down from heavy correction to a final finish, all for DA or rotary machines.
Pads
AutoBead Downforce Foam Pads Heavy Cut
A dual-foam cutting pad for heavier correction. Use it within the pad and machine instructions; heat resistance does not justify excessive pressure or prolonged work in one area. For DA and rotary machines.
AutoBead Downforce Foam Pads Medium Cut
The polishing pad in the same dual foam design, paired with the Medium Cut Compound.
AutoBead Downforce Foam Pads Fine Cut
The finishing pad, with a rubber-like backing that stops polish migrating to the hook and loop.
Compounds, from heavy cut to finish
For the heaviest defects: random deep scratches, buffer trails and 1500 grade sanding marks. The diminishing abrasives keep working for longer and finish down well, and we recommend AutoBead Medium Cut Compound or Finishing Polish to refine afterwards.
Removes swirl marks, imperfections and sanding marks up to 2500 grade and leaves a high gloss, which is why it also works as a one-step correction polish.
An ultra-fine option for refining light defects and improving clarity. It handles 3000 grit sanding marks, but the paint, pad and technique determine the finish, so we recommend a test section first.
These compounds are silicone-free and contain no fillers. We still inspect after removing residue with a compatible panel wipe, and we would not polish matte paint, wraps or an unknown finish simply because a product has broad compatibility wording.
AutoBead pads and compounds compared
| Product | Stage | What it is for | Sizes |
|---|---|---|---|
| AutoBead Heavy Cut Compound | Heavy correction | Deep scratches, buffer trails, sanding marks up to 1500 grade | 1L |
| AutoBead Medium Cut Compound | Correction or one step | Swirl marks and sanding marks up to 2500 grade, high gloss | 1L |
| AutoBead Finishing Compound | Finishing | Light swirls, holograms, 3000 grit sanding marks | 500ml, 1L |
| AutoBead Downforce Heavy Cut pad | Cutting pad | Dual foam, heat resistant, DA or rotary | 3 inch, 5 inch |
| AutoBead Downforce Medium Cut pad | Polishing pad | Dual foam, heat resistant, DA or rotary | 3 inch |
| AutoBead Downforce Fine Cut pad | Finishing pad | Dual foam, heat resistant, DA or rotary | 3 inch |
What else do you need to machine polish a car?
We would budget for several compatible pads, a suitable polish, clean residue cloths and good inspection lighting. Add a stronger compound only when assessment and a test section justify it. A compatible panel wipe helps you inspect the result.
- Pads in cutting, polishing and finishing grades, such as the AutoBead Downforce pads above, from our polishing pads.
- A compound to remove defects and a polish to refine the finish. Our guide to compound vs polish explains which you need.
- Panel wipe to clear polishing oils, so you see the true finish, from our panel wipe and IPA range.
- Clean microfibre towels for wiping off residue, from our polishing microfibres.
How do you use a DA polisher safely?
Start on clean, decontaminated paint, keep the pad flat and moving, and let the machine do the work. Check each small section before you move on.
- Prepare the paint: wash, decontaminate and dry the car first, following the correct order to detail a car.
- Fit and prime the pad: centre a clean pad on the backing plate and prime it with a little product.
- Spread, then work: spread the product at a low speed, then raise the speed to work it.
- Keep it flat and moving: work small sections with slow, overlapping passes and do not dwell in one spot. Work an area no bigger than six times the size of the pad.
- Let the machine do the work: heavy downward pressure slows the pad, especially on a long-throw machine.
- Check as you go: wipe off and check each section before moving on, and clean or swap pads as they load up.
Common questions
Which backing plate size do you need?
The backing plate holds the pad. A 5 inch (125mm) plate is the usual size for bonnets, roofs and doors. A 3 inch (75mm) plate is for tight areas such as bumpers, door pillars and spoilers. Pads are normally a little larger than the plate, so check the pad sizes the machine's maker lists. AutoBead makes its Downforce pads in 3 inch and 5 inch.
Corded or cordless?
A corded machine never runs flat and costs less than a cordless kit with batteries. A cordless machine has no cable to manage, which suits mobile work, but it needs batteries and a charger, so check whether a kit includes them or is the machine only.
Can a beginner use a DA polisher?
Yes. A DA is the low-risk way into machine polishing. Start with a finishing polish and a soft pad on a test section, check the result, and only step up to a heavier compound or pad if the defects are still there.
If you are looking beyond the AutoBead pads, our HDO versus SDO pad guide explains how two other foam ranges differ.
Before attempting correction, read our advice on which scratches can be improved and when to stop.
Need help choosing?
Tell the TDHQ team what you drive, what state the paint is in and whether you want a cable or a battery, and we will point you to the right machine, pads and polish. You can also browse every DA polisher, cordless polisher, rotary polisher and mini polisher we stock.
Last updated 21 October 2026.
