![]() The wet sanding process often enables the sandpaper to cut faster, and prevents particles of the paint from clogging up the abrasive paper. The best way to do this is using a method called " wet sanding", where you would soak the sandpaper and the base-coat surface with a lot of water. Most would recommend starting with sanding the primer with 600 grit, before slowly moving up to the finer 800 grit paperġ,000-1,200 grit - Either one are good options for removing imperfections from the coloured base coat. Thus, these incremental grit sanding increases are neededĦ00-800 grit - Although some might be brave enough to use 400 grit sandpaper on the upper primer layer, it's best to use 600 grit for that job. Remember that even the tiniest of imperfections left on the filler can magnify greatly once the primer, and then the base-coat is added on top. 180 grit can be used to carefully feather the edges of the filler and remove any spot putty, but also doubles as a good way to remove small scratches with minimal markingsģ20-400 grit - Both are excellent for the finishing steps of sanding and levelling the filler surface before the primer is painted on. Some specialists finish off the filler with 120 grit after the 80 grit sandpaper has done most of the smoothening work of the overall surface. This is a great starting point for after the filler's dried out, and you're looking to smoothen out the body filler before adding the primer, and then the base coat of the coloured paint on topġ20-180 grit - Once again, these two are great for finer sanding of the filler layer. ![]() It's very handy to have when say, you're trying to remove deep rust before any body filler is coated.Ĩ0 grit - If 40 grit is rough enough to smoothen out your car's bare bodywork, 80 grit is a step below that in coarseness. For 40 grit, it's a very rough surface that will leave sanding marks, often used to prep the bodywork before any paint or material even goes on it. Here's a breakdown of the most common grit ratings on sandpaper that you may come acrossĤ0 grit - These are as coarse as sandpaper can be, for the most part. It's crucial to understand the differences, as either end of the grit spectrum has its use for car repairs. In automotive applications, the grit rating can vary anywhere from a scratchy 40 grit, to a very fine 3,000 grit. Something else we'll learn through this is that the higher the grit number is, the finer (less coarse) the sandpaper will be For example, 1,000 pieces of grit on one square inch of sandpaper would equate to 1,000-grit sandpaper. But what grit of sandpaper should you be using for paint touch-ups A Few Gritty Facts That You Should Knowīefore we dive deeper, however, what exactly is grit? In sandpaper, 'grit' defines how much abrasive material in individual pieces you have per square inch of paper. ![]() Overall, this makes it both easier to touch up, and may improve the final look of the now-repaired bodywork. Well, it turns out that a bit of gritty sanding helps a lot to smoothen out the damaged or chipped paintwork. This is made more anxious after you suddenly remembered someone mentioning sanding your car. Am I painting too much over the lines, or do I need to wax the car down after this Everything rushes through your head at once are you using the right paint for the job, or whether you're even putting it on properly. Touching up your car's paint, even with the many clever and easy to use solutions that we have these days at our disposal, is always a nerve-racking ordeal. What Grit Sandpaper For Touch-up Car Painting?
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