150-grit lacks the intensity for evening out nicks and stripping away multiple layers of paint. Before the new coat of paint is applied, 400-grit paper makes prepping smooth and easy. Before you apply the new paint job, you’ll want to sand away the older blue coats. The reasoning here is that, when dry, 400-grit tends to leave sand on the subject, which can be troublesome as far as finishing work is concerned. Once it has dried, you can then use a fine grit of sandpaper to smooth out the surface. At this point along the wet sandpaper grit chart, the options are ideal for smooth buffering as well as the removal of thick paint. Once all of the panels have been stripped, the surfaces should be smooth enough for a primer coat of the new paint. For example, you might be painting a car with a unique color that has to be specially ordered, but end up with a bad passenger door or roof due to the paint running out when you’re 93-percent finished. Super fine (final sanding of finishes, final sanding of wood), Ultra fine (final sanding and polishing of thick finishes). Polishing. You should paint over 400-grit. First, before repairing a dent or applying body filler, you must remove the paint. Let’s start with the heavy duty grits and what they’re used for. What is the spiritual meaning of the name Rachel? Excel Blades K11 Paint Remover – Best Value. Unlike other types of sanding, wet sanding movements should be back and forth, in a straight line, rather than in circular motions. Medium Coarse Sandpaper Medium coarse sandpaper is graded between P80 and P180 on the grit level and offers a good level of paint removal, which is less likely to destroy the underlying surface. That is an excellent grit to paint your base coat and clear coat over, including enamels or anything else that you’re doing. This type of sandpaper is not efficient in removing multiple layers of paint it works best when you have already reduced the amount of paint on the surface.Medium sandpaper is effective at eliminating the final layers of paint. Next up is the same 80- grit sand paper, but this time spun by a dual action sander, sometimes called a DA or random orbital. Next, you will need a 1500 grit sandpaper to do the job. A more harsh grit sand paper like 1000 will cut through the clear coat at a more rapid rate than 2000. Asked By: Melissa Pharlain | Last Updated: 7th June, 2020, For heavy sanding and stripping, you need coarse, Apply a coat of primer, allow it to dry completely according to manufacturer's instructions, and then, Denatured alcohol is supposed to work if you let the alcohol soak the stain and then use a brush to scrub. This sandpaper is still not recommended on materials you don’t want potentially scratched or damaged, but it will remove your rust faster. Sand Off Paint Process. 1500 grit An extra fine grit used for wet sanding the clear coat to remove defects before paint polishing. In fact, 150-grit sandpaper is mostly for feathering areas that have already been sanded with a lower-intensity grit. Likewise, redoing a door or hood on which dirt landed as the paint was drying could lead to further loss of money and hours. With a 40-grit piece of sandpaper, rust can be rubbed away before it spreads. In any case, rust is cancerous to metal surfaces and must be stopped the moment it begins forming on the panel of a vehicle. Remove remaining paint with an edge sander, sanding block or sanding sponge. If your surface is an intricate design, you are better advised to use medium course grade to protect the carved design beneath the paint. When repairing worn, scuffed or scratched paint, begin with a 1200 or 1500 grit sandpaper. That way, you won’t experience any major setbacks if minor challenges occur, such as the discovery that dirt or hairs have been stuck to the surface under the paint. Then increase the grit to 120 to remove rust stains or shape body filler. With our secure, 24/7 ordering process, we offer free shipping on bulk orders, as well as price matching for anything you find in our inventory. Therefore, while 400-grit is one of the most popular grits of sandpaper, it’s often used exclusively for wet sanding. Using 40-grit sandpaper or the abrasive wheel, sand the area down to bare metal. Now take a thousand grit sandpaper and again sand continuously for a few minutes. However, light streaking will still be present if you apply heavy force. On the automotive sandpaper grit chart, 40-grit is generally recommended for cars, trucks and vans that have been treated to several overlying paint jobs over the years. When you consider all the time and money that can slip down the drain when a vehicle-painting project doesn’t go as planned, 600-grit sandpaper is a lifesaver because it reduces complications. Sometimes the oxidation on the paint so bad, You’ll feel like it’ll never Shine again. Bosch Power Tools – 1250DEVS – with Two Sanding Modes. Dry sand using 180-grit sandpaper to remove … When it comes to correcting errors in soft layers of paint, 600-grit sandpaper makes the task relatively easy. Now proceed to wet-sand the clear coat material. 120-grit is a common type of sandpaper used for such jobs. By the time you work a 320-grit through the paint, the shiny, silvery luster of the metal should come glaring to the surface. You may have some 40 grit scratches to fill, but not a problem. In an earlier set of circumstances, you might have needed to do the paintjob over again, yet still be at risk of running out along another part of the vehicle. A 3 inch grinder with 36 grit to 50 grit is what I normally use, but there are several other options, such as a da sander. The sanding can be accomplished without the blunt streaks that a 32-grit would leave in its path. However, sandpaper of this intensity could leave needlessly rough scratches on an even, smooth coat of paint. BASECOAT CLEARCOAT SYSTEM FINAL PAINT GRITS: In the end. The higher the grit number is equivalent to a finer abrasive, which creates smoother surface finishes. Choose your coarsest grit (600 if you are sanding primer or bodywork, 800-1000 if you are sanding a finished paint job). You're OK, I'd just go over everything with, say, 80 grit or 100 grit. In contrast to sandpapers in the 32 to 40-grit range, 80-grit sandpaper is not terribly rough on the surface of vehicle panels. 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 … Your main goal when wet sanding car paint is to take dirt, craters and scratches out of the clear coat. Aside from grinding discs, sandpapers in the 24 to 36 range are the roughest of all grits. This can be used to sand the car down to the bare metal without digging into the metal surface. Therefore, a 240-grit piece of sandpaper can be used to easily strip an automobile panel of all paint. Feather the paint edges using 120-grit sandpaper, and finish with 220 grit … On the other hand, 80-grit could more easily work through the layers of paint and primer to reveal the metal surface. On panels that only need touching up in a certain spot, 150-grit will often be the perfect choice for smoothing out the edges of the crack or chip in an otherwise good coat of paint. When people ask about what grit sandpaper to use when painting a car, 150-grit is one of the more popular recommendations. Sand old paint and primer off of a car using a dual-action sander and 80-grit sandpaper. Another use for 40-grit sandpaper is rust removal. If necessary, apply a second coat of stripper. As such, 80-grit can be applied to the hood, roof or door panels of a car or van without leaving rough streaks. As such, when people ask what grit sandpaper to use when painting a car, 320-grit is a good choice for large automobiles with thick coats. Not clear if you're dealing with three layers of paint or three paint jobs, I've used 40 grit to strip multiple paint jobs, but stop before bare metal, then finish with 80-120. All that said, auto-sanding projects of this intensity are not the norm. Test a small, less visible portion of the surface you are cleaning with the orange solvent. When people ask what grit of sandpaper is suitable for a wet sanding primer, 240-grit is a popular answer, because a wet, folded 240 will generally offer durability during a sanding job. An 80-grit piece of sandpaper could come in most useful on cars with more than one prior paintjob, as well as vehicles with light corrosion around the edges. Now here is a good tip that you need to learn Sand it continuously over the paint to be removed for a few minutes. Hitachi SB8V2 Variable Speed Belt Sander. As with sandpaper grits in the 30s range, 40-grit sandpaper has large grains that leave rough streaks along painted metals. As such, 400-grit is one of the most widespread options on the wet sandpaper grit chart. Therefore, it’s important for anyone who owns a vehicle and has considered getting a new paintjob to at least understand the grit intensities of the various options on the automotive sandpaper grit chart. When you get into the 200 range, sandpaper becomes smoother, yet stronger, than any of the lower-grit options. For finishing surfaces smoothly, use a super fine sandpaper with 360- to 600-grit. Sandpaper in the 24 to 36-grit range is most appropriate for projects where the automobile has rough areas along the surface that need to be flattened out. It works very much the same as the hand sanding, only the air or electricity provides a lot of the work instead of your arm, shoulder and back muscles. To learn more about what we have to offer, visits our sales pages today! This is the best sander for auto paint removal that we’ve found. What's the difference between Koolaburra by UGG and UGG? Leave the coating undisturbed for about 20 minutes, until the paint begins to bubble up. If it’s not stopped, rust can eat holes through panels of the vehicle’s body, and ultimately require a costlier set of repairs. 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