3/24/2024 0 Comments Sandpaper grit chart renew table![]() Extra fine sandpaper 150-grit and above: Used between coats of varnish or paint.We have listed the different ranges of sandpaper grit and provided a table below for your reference. The way to determine this is that the FEPA scale uses the “P” in front of the grit number.ĭifferent Types of Grit Sandpaper and Their UsesĮach grit number is a description of what it does and this can help you decide what grit sandpaper for wood or any other material would need to be used. The CAMI scale is used for most sandpaper, although if you acquire sandpaper online, you may come across sandpaper grit measured by FEPA (Federation of European Producers of Abrasives). The greater the number, the finer the grit of the sandpaper. ![]() The CAMI (Coated Abrasive Manufacturers Institute) devised a gradation scale for determining grit in the U.S. To make abrasive material, the particles (which are also referred to as grit or grain) are filtered through screens and separated by size before being attached with glue to a sponge, paper, or cloth-type substrate. ![]() Sandpaper is made up of tiny particles derived either from organic or artificial sources. Most projects require more than one kind of sandpaper, and sometimes three. Fine-grit sandpaper, on the other hand, is always used to finish and polish surfaces. Coarser grit sandpaper is generally used for heavy sanding on uneven and rough surfaces. As a result, a 220-grit sandpaper sheet is coarser than a 400-grit sandpaper sheet. In general, the coarser the grit, the smaller the grit number. The Definition of Grit and How It Affects SandpaperĮach grain of sandpaper does a distinct task. Here you find yourself faced with piles of sandpaper sheets along with booklets, each clearly labeled with various numbers indicating sandpaper grits.Īnyone who does not understand how these numbers work will likely assume that the lower number indicates a finer grit whereas the higher number represents a coarser one, but it is, in fact, the opposite. Sandpaper may appear to be a simple thing to mark off a project checklist until you arrive at the local hardware store. Choosing the Right Grit Sandpaper for Woodworking.Different Types of Grit Sandpaper and Their Uses.The CAMI scale is very similar to the FEPA scale, especially in the more commonly used sandpaper grades and grits such as 60-300. They use numbers only and are not preceded by a letter. In the US sandpaper grit is governed by the CAMI (Coated Abrasive Manufacturers Institute). The scale is based on the diameter of the average particle size in microns. This is represented on the back of a sheet of sandpaper with the letter P e.g. Sandpaper grit in the UK and Europe is graded by FEPA (Federation of European Producers of Abrasives). It's often used on rough timber that needs to be smoothed out and the first sanding when sanding floorboards. It is used for jobs that have a lot of paint or varnish to remove. ![]() This sits below coarse sandpaper and includes 24 and 36 grit sandpaper. It can also be used to smooth out a top coat and fine wet sanding. Grits above 320 such as 400 to 600 are typically used to get a really fine finish on wood ready for waxing or polishing. Higher grit sandpaper such as 320 grit will provide an even smoother finish between coats. The common choice amongst DIYers is 240 grit, which is used between coats to smooth the previous layer of paint ready for the next to help ensure a smooth finish. It is also the common choice when sanding painted walls, smoothing out plaster and rubbing down filler to blend in with the surface it's on. It is also used on bare wood to smooth out ready for the first coat of paint or varnish. It gets rid of any minor imperfections and roughs up the surface to provide good adhesion for a new coat of paint. ![]() Painting projects often use 120-180 grit for sanding down previously painted surfaces. This ranges from120 to 220 grit and is one of the most commonly used grades in home DIY projects. It is also a good choice on windows, doors, skirting boards that have a lot of layers of paint, especially poorly-applied paint. It's often the first option on old bare wood such as doors and door frames that needs to be smoothed out ready for painting. This ranges from 60-100 grit is and is typically used on bare wood finishes that have coarse cuts and need the quick removal of splinters etc. ![]()
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