![]() Finally, you can wipe the surface with tack cloth. Run your fingers over the surface if you feel that it is as smooth as you would like it to be then your work is done. Next use a 100-grit sand paper and then 120-grit sandpaper until you can feel that the surface has become very smooth. Do not put excess pressure sand it moderately and continue sanding until the surface is smooth and has become level. Start with 60-grit sandpaper and move it back and forth if it’s wooden object, or move it in one direction if it is paint. Hold the sandpaper against the surface with your finger tips or you can wrap it around a sanding block. Choose the right grade of sandpaper as per the job you want to do. ![]() Sandpaper grades of 400, 500 and 600 are helpful in removing blemishes, and film finishes so that it can be polished anytime in the future.īefore you start your sanding job, decide how much material you want to remove from the surface.Sandpaper of 400 grades is used for sanding lacquer that has been freshly applied.Sandpaper of 320 grades is used for sanding varnishes.It is also used for sanding the sub-layer before the finishing of application. 280 to 320 grades are used for sanding polyester and bare wood.Sandpaper of grades falling between 240 and 500 are used to give finishing touches to varnish and water varnish that is intermediate to the surfaces meant for sanding.Sandpaper grade of 230 is used for lacquer sanding before the application of a primary layer of paint or a sub-layer of paint.180 to 400 sandpaper grades for paint are used for finishing work, sub-layer and putty.These are used for preprocessing and equalizing solid wood or wood veneer after they are wetted. 180-220 sandpaper grades are unsuitable for sanding wood that is meant to be polished.150-220 grades of sandpaper are used for equalizing surfaces, rounding wood pieces, wood veneer, wood trees, wood board of fiber, and board of particles.Sandpaper grades falling between 120 and 180 are used to round the putty surfaces and equalize the sub-surface layer. ![]() For equalizing the surface layers of paint and old paint, 80 to 150 grade of sandpaper is used.Scrubbing using these grades of sandpaper leaves the surface scratched, so a sandpaper of different grade is used to do the sanding again. It is also used to do sanding of the wood with the sandpaper grain. Sandpaper grade of 60 to 120 is used to remove leftover paint stripper.46-120 grade sandpaper is used to clean the surface of sandstone, brick and solid wood.Sandpaper of grade that falls between 24 and 60 is used to trim the surface of old paint and metal.Sandpaper of grade between 24 and 36 is used to deburr concrete, paint and stone.If you are looking for sandpaper grades explained then the different uses of sandpaper according to their grades have been thoroughly explained below: The chart prepared by FEPA is commonly used around the world as FEPA defines a grade by defining grain sizes range, unlike CAMI that defines the particle size on an average. Different grades of sandpaper have different uses. ![]() The sandpaper grades explained that there are several standards set for the coated abrasives but the common ones that are in use are sandpaper grades by the Federation of European Producers of Abrasives (FEPA) and sandpaper grades chart prepared by Coated Abrasives Manufacturer’s Institute (CAMI).
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