what sand paper can i use on car

[Lila]

For most automotive sanding tasks, you'll use wet/dry sandpaper with a grit range between 800 and 3000. The exact grit depends entirely on the job: removing clear coat scratches, smoothing primer before painting, or tackling surface rust. Using the wrong type or grit can permanently damage your car's finish.

The most critical rule is to always start with the finest grit that can effectively handle the task and gradually move to finer grits. For instance, if you're sanding a clear coat to remove light scratches, you might start with 1500-grit paper and finish with 2000 or 3000-grit to create a smooth, haze-free surface ready for polishing. For sanding primer before applying base coat, 400 to 600-grit is typically used to create a "tooth" for the new paint to adhere to.

Sanding Task	Recommended Grit Range	Key Considerations
Removing Orange Peel	1000 - 2000	Use with a sanding block and plenty of water (wet-sanding).
Smoothing Primer	400 - 600	Creates a slight texture for paint adhesion; avoid cutting through to metal.
Feathering Edges	800 - 1500	Blends repaired areas into surrounding paint; requires a delicate touch.
Final Polish Prep	2000 - 3000	Used after coarser grits to eliminate sanding marks before compounding.
Surface Rust Removal	80 - 220	Start coarse, but be aggressive only on bare metal, not surrounding paint.

Always use the sandpaper with a backing pad or block to maintain even pressure. For paintwork, wet-sanding is strongly recommended. It lubricates the surface, reduces clogging of the sandpaper (a problem known as "loading"), and minimizes heat buildup that can warp thin panels. Use a dedicated sanding lubricant or a few drops of dish soap in a bucket of water. Change the water frequently to avoid grinding removed particles back into the surface.

[CharlesMarie]

Stick with name-brand wet/dry sandpaper like 3M. For smoothing a small scratch before touch-up paint, 1000-grit is a safe start, followed by 1500. Always keep the surface wet. The goal is to create a dull, smooth area, not to sand down to the metal. If you see any color other than your car's topcoat, you've gone too deep.

[OBriella]

As someone who details cars, the paper is only half the equation. The technique is key. I use a small sanding block and a spray bottle. I start with 2000-grit for light scratches, spraying constantly. I make straight, light passes until the scratch is gone and the area is uniformly hazy. Then I switch to 3000-grit to remove the haze from the 2000-grit. This leaves a perfect surface for my polisher to bring back the gloss. Rushing this will burn through the clear coat.

[Delaney]

If you're dealing with rust on an older car, that's a different ballgame. You'll need tougher stuff. For surface rust, start with 80-grit on a dual-action sander to get it down to bare, clean metal. Then, work your way up through 120, 180, and finally 220-grit to create a smooth surface. This isn't for paint you want to save; this is prep for a whole new coat of primer and paint. Wear a mask—that dust isn't good for you.

[VonCollin]

Honestly, for a beginner, my advice is to be very cautious. Sanding your car's paint is one of the riskiest DIY jobs. If you're just trying to remove a small scratch, buy a dedicated paint repair kit. It will include the correct, pre-cut sanding discs (usually around 3000-grit) that are almost impossible to mess up with. It’s a safer, more guided way to learn the process without the fear of causing hundreds of dollars in damage by using the wrong sandpaper.