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Car Washing & Drying intermediate 11 min read

Sorting Out Scratches and Swirls the Right Way

Most car owners make this harder than it needs to be. Here's the straightforward approach that actually works—no fluff, no upselling.

Ever walked out to your car after a grocery run only to find a fresh mystery mark on the door? Scratches are a fact of life in Australia, but most of them don't need a trip to the panel shop if you've got the right gear and a bit of patience.

MT
Mick Thompson Senior Detailing Editor
| Updated: 4 March 2026
Sorting Out Scratches and Swirls the Right Way

Aussie Conditions

Australian conditions are tougher than most—intense UV, red dust, coastal salt, and 40°C summers. European car care advice often doesn't cut it here.
Quick Summary

Look, I've spent over 15 years chasing perfection on everything from clapped-out farm utes to high-end Euros, and the biggest thing I've learned is that most people overcomplicate scratch removal. This guide is a massive deep-dive into how I actually fix paint in my shop, tailored for our brutal Aussie sun and dusty conditions. Whether you're dealing with light swirl marks or a nasty bush-bash souvenir, I'll show you how to judge the depth and fix it without burning through your clear coat.

01

The Reality of Aussie Paintwork

Right, let's get stuck into it. There is nothing worse than that sinking feeling when you spot a fresh scratch on your pride and joy. I remember back when I started, I had this black VF Commodore, absolute nightmare to keep clean. I parked it under a gum tree for one arvo, and between the sap and a rogue cockatoo, the bonnet looked like it had been through a war zone. I tried to 'buff it out' with some cheap rubbish from the servo and ended up making it ten times worse. That's how I learned the hard way that paint correction isn't just about rubbing hard; it's about science and technique. In Australia, we've got it tougher than most. Our UV index is off the charts, which means your clear coat is constantly being baked. If you're near the coast, that salt air is eating away at any exposed metal, and if you've ever done a run out west, you know that red dust gets into every microscopic pore of the paint. By the time we hit March and Autumn rolls around, the paint has usually been hammered by a long summer, making it brittle and prone to marring. Before you go grabbing the sandpaper, you've gotta understand what you're looking at. Most modern cars have a 'base coat' (the colour) and a 'clear coat' (the shiny protective layer). Most scratches we deal with are just in that top clear layer. If you can feel the scratch with your fingernail, it's deep. If you can see metal or grey primer, give it up, you need a touch-up pen or a pro. But for everything else? Swirls from old car washes, light bush pinstripes, or that mark from the missus' handbag? We can fix those. I reckon about 80% of the cars I see can be improved massively just with a bit of elbow grease and the right knowledge. Don't let some bloke at the pub tell you to use toothpaste either, we're doing this properly.
02

The Essential Kit Bag

What You'll Need

0/12
Dual Action (DA) Polisher — Don't buy those cheap vibrating ones from the hardware store. Get a proper 15mm throw DA like a Shinemate or a Rupes if you're feeling flush. It's much safer than a rotary for beginners.
Clay Bar or Clay Mitt — I prefer a clay mitt these days (like the Bowden's Fine Clay Cloth). If you drop it, you can wash it. If you drop a clay bar, it's bin material immediately.
Cutting Compound — Something like Meguiar's M105 or Koch Chemie H9. This is for the heavy lifting.
Finishing Polish — I swear by Scholl Concepts S30 or Sonax Perfect Finish. This gives you that 'wet look' shine.
Assorted Foam Pads — Get at least two heavy cutting pads (maroon/green) and two finishing pads (yellow/white). You'll need extras as they get clogged with spent product.
IPA (Isopropyl Alcohol) Wipe — Mix it 50/50 with distilled water. Essential for wiping away oils to see if the scratch is actually gone or just hidden.
Microfibre Cloths — At least 10 high-quality ones. Don't use the same one for wheels and paint, or you'll be adding more scratches than you're removing.
Masking Tape — Blue painter's tape to cover plastics and rubber trim. Compound turns black plastic white and it's a dog to get off.
LED Inspection Light — Even a high-powered torch works. The sun is great, but a dedicated light shows every swirl the sun misses.
Lubricant — A dedicated clay lube or a very soapy water mix in a spray bottle.
Panel Prep Spray — Something like Bowden's Flash Prep to ensure the surface is chemically clean before you start.
Stool or Kneeling Pad — Your back will thank me later. You'll be spending a lot of time at mid-door height.
03

Preparation: The Most Important Part

Tap each step to mark complete
01

Deep Clean Wash

Give the car a proper two-bucket wash. Use a strip-wash soap if you can to get rid of old waxes. If it's been a buggy summer, use a bug remover on the front end first.

02

Decontamination

Use an iron fallout remover (the stuff that turns purple). This gets rid of metallic particles from brake dust that are lodged in the paint.

03

Mechanical Claying

Run the clay bar over the wet paint. It should feel like glass when you're done. If it feels like sandpaper, keep going. This is vital because if a piece of grit gets caught in your polishing pad, you'll ruin the whole panel.

04

Dry and Blow Out

Dry the car thoroughly. Use a leaf blower if you have one to get water out of the wing mirrors and badges. Drips will mess up your polish.

05

Tape Up

Tape off all unpainted plastics, rubbers, and door handles. Trust me, cleaning compound out of textured plastic is a nightmare you don't want.

04

The Step-by-Step Scratch Removal Process

Tap each step to mark complete
01

Assess the Damage

Use your fingernail. If it catches, we're going to have to be aggressive. If it doesn't, a light polish might do it.

02

The Test Spot

Never do the whole car at once. Pick a small 40x40cm area on the boot or lower guard. Start with the least aggressive combo (finishing polish and a soft pad) to see if that works first.

03

Prime the Pad

Put 4-5 pea-sized drops of compound on your foam pad. Rub it in with your finger so the whole pad is slightly damp with product.

04

Dab and Spread

With the machine OFF, dab the pad across your 40x40cm section. Spread it on speed 1 without much pressure.

05

The Working Phase

Turn the DA up to speed 4 or 5. Move the machine in slow, overlapping passes (about 2cm per second). Use 'cross-hatch' movements, up and down, then left and right.

06

Mind the Pressure

Let the machine do the work. You only need about the weight of your arms on the machine. If the pad stops spinning, you're pushing too hard.

07

Check Your Progress

After 4-6 passes, stop. Wipe the residue with a clean microfibre and some IPA spray. Check it with your LED light. If the scratch is still there, repeat with a heavier compound or pad.

08

The Refining Stage

Once the deep scratch is gone, the paint might look a bit 'hazy' or dull. This is 'micro-marring' from the heavy compound.

09

Switch to Finish Polish

Grab a fresh, soft finishing pad and your fine polish. Repeat the same process on speed 3-4. This is where the gloss really pops.

10

Edge Work

Be careful near the edges of panels. Paint is thinnest there. I usually stay about 1-2cm away from sharp edges if I'm using a heavy compound.

11

Cleaning the Pad

After every section, use a pad brush or compressed air to blow out the 'spent' polish. If the pad gets too gunked up, it'll stop cutting and start generating too much heat.

12

Final Inspection

Wipe the whole area down one last time with your prep spray. If it looks like a mirror, you're golden. No dramas!

Watch Out

Heat is your enemy. If the panel feels hot to the touch, stop immediately. In an Aussie summer, never work in direct sunlight. The compound will dry instantly and you'll end up scouring the paint instead of polishing it. Also, if you're working on a car with 'thin' paint (common on older Japanese cars like Mazdas or Subarus), be extremely cautious. You only have so much clear coat to play with before you hit the base colour, and once you go through, it's a $500 respray for that panel.

Tips from the Trade

A customer once brought in a brand new Ranger covered in 'pinstripes' from a weekend at Landcruiser Mountain Park. He thought it needed a full respray. I used a 'one-step' polish (something like 3D One) on a microfiber pad. Microfiber pads cut harder than foam but finish better than wool. It saved him three grand. If you've got light scratches over a large area, give a microfiber pad a crack, it's a game changer for harder clear coats like you find on Audis or VWs.
05

Advanced Techniques: Wet Sanding

Look, I usually tell people to stay away from sandpaper unless they really know what they're doing. But if you've got a scratch that's just a bit too deep for compound, you can try 'damp sanding'. Use 2500 or 3000 grit Trizact discs with plenty of lubricant. You're basically levelling the clear coat around the scratch. You'll leave a dull, matte finish that looks terrifying, but a heavy compound on a DA polisher will bring the shine back. Just remember: you're removing a lot of material here. I've seen blokes go right through to the primer on a sharp body line in about three seconds flat. If it's a high-value car, maybe leave the sanding to a pro.
06

Protecting Your Hard Work

After you've spent four hours sweating over your paint, don't just leave it 'naked'. Polished paint has no protection against the UV rays we get here. At a minimum, chuck a good quality synthetic sealant on it. I’m a big fan of ceramic-based spray sealants (like Gtechniq V2 or Meguiar's Ceramic Wax) because they're dead easy to apply and last 6-12 months. If you really want to do it properly, this is the perfect time to apply a full ceramic coating. The paint is already corrected and clean, which is 90% of the work for a coating anyway. A coating will help shed that red outback dust and make bird droppings much easier to wash off before they etch back into your fresh finish. Whatever you do, don't go through a brush car wash at the servo next week, you'll just put all those swirls right back in. Stick to the two-bucket method from now on and your car will stay mint for years.
07

Common Questions

Can I remove a scratch that goes down to the metal?
Nah, not with a polisher. If you can see metal, the paint is gone. You'll need a touch-up bottle and a steady hand, or a professional respray.
How often can I polish my car?
Every time you polish, you're removing a tiny bit of clear coat. If you do a heavy correction once, then look after the paint, you shouldn't need to do it again for years. I reckon you might have 3-4 'heavy' polishes in a car's lifetime before the clear coat gets dangerously thin.
Is a rotary polisher better than a DA?
For a pro? Maybe. For a weekend warrior? No way. Rotaries generate heat fast and can 'burn' through paint on corners. Modern DA polishers are so good now that there's almost no reason to risk a rotary.
Will polishing remove bird poop stains?
Usually, yes. Bird and bat crap are acidic and 'eat' into the clear coat (etching). A medium compound usually levels the paint and removes the 'ghosting' left behind.
What if the scratch is on a plastic bumper?
Plastic doesn't dissipate heat like metal does. Be extra careful and use lower speeds on the machine, or you'll actually melt the paint into the plastic.
Do 'scratch repair' pens from the shops work?
Honestly? Most of them are just a thick clear coat filler. They look alright for a week, then the sun shrinks them and they look rubbish again. Stick to polishing.
Can I do this by hand?
You can, but it's hard work and the results won't be as consistent. A machine does 5,000 'rubs' a minute; your arm does about 60. You do the math!
08

My Go-To Combinations

If you're just starting out and want a 'fail-safe' setup, here is what I recommend for Aussie conditions. For the machine, the Shinemate EX620 is a cracking bit of gear for the price. For the compound, grab the Sonax Cutmax, it's got a long working time which is great when it's warm. Pair that with a Lake Country HDO Orange pad for your 'heavy' work. For the final polish, Sonax Perfect Finish on a Black finishing pad is basically cheating, it makes almost any paint look like a pool of ink. And for God's sake, buy good microfibres. The cheap yellow ones from the warehouse are fine for your interior, but keep them away from your paintwork!

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