![]() Wet-sanding plastic will be fine if you use medium- to fine-grit the best sanding paper. ![]() You must employ the wet-sanding method to prevent sandpaper from becoming blocked. This applies to both before and after the clear coat application. If you need to remove surface blemishes and scratches both before and after applying the clear coat, use 1500 to 2000 ranges of grit. Sand the surface when it is wet if you want the best results. The recommended grit range is 1000 to 1200. When you need to get rid of base coat flaws, this grit range will handle the work for you. It is advised to start at the lower end of the grit scale and continue up to 800 grit. A sanding block should also be used, which is strongly advised.īefore applying paint to the region, it is best to smooth out surface imperfections in primer using this range of sandpaper grit, which spans 600 to 800 grit. It can be used for sanding before primer is applied, rough sanding primer, fine sanding spot putty, and final body filler sanding. This grit range is much finer than the ones that came before it, ranging from 320 to 400. ![]() It is advised to use it for shaping body filler and any rough sanding that needs to be done before the start of the bodywork. How to select the correct grit size of sandpaper for the car? It is not advisable to use a 40 to 80 grit range of sandpaper grain for work like fixing minor clear coat scratches or other jobs of a similar kind because it is quite abrasive and may leave observable marks behind. The more abrasives there are, the finer the sandpaper will be the higher the number, the more abrasives there are. Fewer abrasives will be present in the sandpaper, which will result in a coarser texture, as the number decreases. The grit of the paper is the number of abrasives that fit into a square inch of a sheet of sandpaper. What S andpaper S hould Y ou U se on a C ar before P ainting? ![]() You can spray water on it or use fresh sandpaper to prevent the plastic from being scratched if it dries out. Ensure that the sandpaper is always moist to the touch.
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