Spray primer and then paint onto the sanded area 40 to 80 Grit - This sandpaper grit is very course and will leave behind visible marks, so it is not recommended for small clear coat scratches and other similar applications. The scratches would appear as slightly darker swirls when viewed at an angle under shop light. Sandpaper For Car.Use them in commercial designs under lifetime, perpetual & worldwide rights. I have just finished blocking the whole car, with a guide coat. Also, what is your final goal? 32 and 40 grit sandpaper can also be used for sanding heavy rusted areas and cleaning them down to shiny metal. It does seem obvious, but you'll need the right type of sandpaper. A 1200-1600 RPM cordless drill; Polishing compound pad; Materials. Finally just before you are ready to apply primer to the metal smooth the cars surface with a 320-grit piece of fine sandpaper. You should dip your block in some soap and water in and up and down motion. Coarse Sandpaper - Rough grit sandpaper will make the dashboard more scratched than it already is, causing a problem when learning how to remove scratches from plastic car interior. Simply take some 1200 grit sandpaper (included in the kit provided) and gently sand the area until it feels smooth to the touch. It is also important to do some prep work on the scratch such as cleaning it thoroughly and sanding it with fine-grit sandpaper. I tried wet sanding with 180 grit, noob mistake, and although it removed the scratches, it left my paint looking horrible. 2. What is grit? 320 to 400 Grit Sandpaper: Very fine grit sandpaper is used for light sanding between coats of finish and to sand metal and other hard surfaces. The deep scratch should be replaced with finer 2000 grit scratches. Buff out the scratch with sandpaper. The grit number of sandpaper is almost always clearly printed on the back of the sandpaper . When you have removed all the oxidation, and there is a uniform finish, continue on to the next step. And I final sand the bondo with 80. All you need for this trick is a can of WD-40 and a rag/paper towel. Keep the paint wet and work with the pad angled. While that's soaking, wash and dry your car so the clear coat is fully exposed. After you've finished, use a rubbing compound to eliminate the sand scratches. Attach 220-grit sandpaper to a sanding block, an electrical sander, or just use it in your hand if the scratched area is small. Spray Paint - Unlike the spray bottle or using a brush, spray paint will sit everywhere and lead to more labor when learning how to repaint your car. A Poly primer (slicksand, feather fill, etc) will fill 80 grit scratches and will not shrink back. Rubbing compound works like a very fine sandpaper, by gently smoothing the vehicle's paint by "sanding" scratches out of it. A car covered in 80 grit scratches is the perfect candidate for Poly primer, its more or less glazing putty that you can spray. Use a spray bottle of water to keep the area wet. The higher the grit, the smaller the particles and finer are the scratches left behind. I started out with 80 grit and moved to 120. That is an excellent grit to paint your base coat and clear coat over . . Sandpaper Grit Chart is an illustrated guide to help with the selection of sanding belts and discs for different types of woodworking projects. Here is the easiest way to remove scratches from your car paint: Wash down the area with a soapy water and a towel. Use 2000- grit sandpaper to sand the scratched area in about 10 to 15 seconds then check the area to know whether you need to sand deeper or not. For fixing a few scratches you can sand by hand. 180 to 220 Grit Sandpaper: Finer grit sandpaper is great for removing the scratches left by coarser grits on unfinished wood and for lightly sanding between coats of paint. The chart includes a list of grits and their uses. Course sandpaper is usually 40-60 grit, while super fine sandpaper is . Consider turning the scratch into an artwork 2. The deep scratch should be replaced with finer 2000 grit scratches. 320 to 400 Grit Sandpaper: Very fine grit sandpaper is used for light sanding between coats of finish and to sand metal and other hard surfaces. This is for fine scratches that may be on your vehicle. For example, #24- or #40-grit sandpaper is a very coarse, rough sandpaper, while the #1,000-grit paper is extremely fine with very small abrasive particles. Can WD 40 Remove car scratches? You can wrap the sandpaper around a kitchen sponge to create an easy-to-use DIY sanding sponge. Sand with 2,000-grit sandpaper until you reach your car's metal panel. 1. 2. Use a fine sandpaper - one that is 2000-grit should work fine. Always sand in the direction of the scratch; there is no need to make more scratches. You only want to eliminate the deeper 2000 grit scratches. 320 to 400 Grit Sandpaper: Very fine grit sandpaper is used for light sanding between coats of finish and to sand metal and other hard surfaces. This is a question that I get asked a lot on the blog and from my VIP members. Most would recommend starting with sanding the primer with 600 grit, before slowly moving up to the finer 800 grit paper. Based on the project, you may need different grits to make sanding easier. It was a light metallic gold/tan color. Depen. Step 4: Sand the scratch. I have wet sanded and buffed paint before. For deeper scratches, you'll need to start with a 1200 or 1500 grit papers. For proper paint preparation you will want to choose a finer grit of sandpaper for the job. 180 to 220 Grit Sandpaper: Finer grit sandpaper is great for removing the scratches left by coarser grits on unfinished wood and for lightly sanding between coats of paint. Then, follow with 3000 grit wet and dry sandpaper to remove 1500 grit scratches. Spray a . Whichever method that you decide, follow it up using 400- to 600- grit sandpaper to sand the paint to prep the existing paint surface for the new coatings to be applied. Whichever method that you decide, follow it up using 400- to 600- grit sandpaper to sand the paint to prep the existing paint surface for the new coatings to be applied. SAND ROUGH PATCHES. What grit sandpaper between primer and paint. It took 2 or 3 passes with Diamond Cut to remove 2000 grit scuffs from my last touch up and wetsanding project. You get sandpaper varying from 200 to 3000 grits. Now proceed to wet-sand the clearcoat material. Also use the spot-sanding tool to remove rust from scratches and larger paint chips. But you will still have to buff out the scratches from the 3,000 grit paper. The scuff in the example shown was quite rough to the touch, in situations where the damaged area is rough such as this, it is always best to sand the rough areas down. Sand paper grit simply refers to how many particles of sand there are in every square inch of sandpaper. Any less than 1200 grit sandpaper may produce scratches that are difficult to buff out. Prepare the vehicle. Jul 16, 2009. And this sandpaper has 120 t0 5000 assorted grits that is a loaded package. If you encounter any bumps, cloudiness, or "cat" scratches, just wait five minutes, sand again until smooth, and try again. Don't forget to finish it with a clear coat before finally giving it a wax. This is probably why most manufactures state P600 for final sanding on metallic colors. Then, you need to sand the area progressively with finer and finer grit sandpaper going up to 700-800. Mask the area to know where your scratches are. Sand the scratch with a 3000 and 5000 grit sandpaper. Besides the grits and grades, sandpaper is made out of materials that vary chemically. - Wash and dry your car thoroughly, more scratches can be created if you repair the scratches when your car is dirty. Somehow I doubt that FI-II will take care of 800 grit scuffs. 40 to 80 grit is a more coarse sandpaper, and while it's better at removing rust compared to finer sandpaper, it will leave more scratches. It can be made from the grains of a natural mineral called garnet, or from synthetic ones like aluminum oxide, alumina-zirconia or silicon carbide.Irrespective of the sandpaper you work with, it must have a strong bond between the sandpaper grit and its backing material. Wipe off the excess water frequently and check to make sure all the scratches are gone from the previous grit, before moving on to the next. More Facts on Sandpaper Types. Purchase 1200 or 1500 grit sandpaper. Then medium then fine cut polishes. I used dry 220 grit paper on the board the last time around to remove the guide coat and take out the scratches from the rougher paper. Although coarser sandpaper will remove more material from the surface, it will also leave deep scratches as well. Next, sand along the whole length of the scratch using wet 3,000 grit sandpaper (5,000 grit works in a pinch). Get hold of the 400 grit sandpaper which you had soaked in water in step I above. Then follow the instructions on the bottle of rust converter and use a foam brush to apply a thin coating to the area. Then, wrap a sheet of the wet sandpaper around a sanding block and sand your car in small sections. Dry sand using 180-grit sandpaper to remove rust or surface damage before moving on to a 320-grit paper to remove your previous 180-grit scratches. You need to make sure you do not go all the way through the paint. Switch to 600-grit sandpaper to feather the painted edges around the spot. Seriously,,,I have never had a problem with sand scratch... Like I said,,,you have to get rid of the scratches from your 36 or 80 grit that's around your bondo. Buff it with wax. Resand each section with the 2500 grit sandpaper wrapped around your baking pad. You can wrap the sandpaper around a kitchen sponge to create an easy-to-use DIY sanding sponge. 320 to 400 Grit Sandpaper: Very fine grit sandpaper is used for light sanding between coats of finish and to sand metal and other hard surfaces. For lighter scratches use 400-800 grit sandpaper and for bigger scratches use 100 - 200 grit. Also, what is your final goal? When the scratch is gone, move the tape up and down another half inch and use . I would do what 2wheelsx2 said to do. Spray primer and then paint onto the sanded area Prepare the scratched area. Always sand in the direction of the scratch; there is no need to make more scratches. After the initial cleaning process, you should use a silicone carbide sandpaper disk with about 1000 grit. This step is only recommended if your paint job is around 12 or more years old, has many small scratches, or looks like it was poorly painted. How to Wet Sand Car Paint - How To Buff out sand paper scratches With A Polisher. You can purchase sandpaper at your local hardware store, large retail store, or auto parts store. You will need some serious abrasives to get out scratches that deep. It contains three sheets of each grit which gives a good service. So I'll say it like I've said it before…. Never use less than 1200 grit sandpaper on a car's paint. Thank you for watching this video about the correct sandpaper grit you should sand your car with before paint. 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