Grit 240 (Grade P240) Wet And Dry Sandpaper Sanding Polishing Paper Finishing Sheet

Product Information

The micro grit types of sandpaper grit are classified as follows and are primarily used for small, precise sanding, like taking off coats of finish or smoothing small areas of buildup. Coarseprovides moderate material removal, smooths rough surfaces, and removes moderate rust, gouges, and deep scratches. Coarse grade grits range from 40 to 60. These types of sandpaper grit classes ensure rapid material removal. As per FEPA standards, these are classified as P40 or P50 and are denoted as 40, 50, or 60 by CAMI standards. The typical diameter of the sandpaper grit ranges between 336 to 425 micrometers. This sandpaper allows you to clear away a layer of finish or debris with little effort. However, it may not leave behind the smoothest surface texture. Medium Sandpaper is available in various forms, including sheets, discs, pads, and rolls. When selecting sandpaper, the color is not as important as the grit or grade, so focus on choosing the appropriate number for your needs. Different sandpaper grits are suited to different woodworking projects and desired finishes, so it’s crucial to choose the right one to achieve the desired result. This is used to initiate wood polishing. FEPA standards classify these types of sandpaper grit as P400, P500, or P600 while CAMI classifies them as 360 or 320, and diameter sizes range between 25.8 to 36.0 micrometers. Super Fine

Extra Coarseprovides heavy material removal and removes heavy rust, coatings, and finishes. Extra-coarse grits range from 12 to 36.This sits below coarse sandpaper and includes 24 and 36 grit sandpaper. It is used for jobs that have a lot of paint or varnish to remove. It's often used on rough timber that needs to be smoothed out and the first sanding when sanding floorboards. What does the P mean in sandpaper grits?

Extra Finepolishes metal and smooths raised wood grain. Extra fine grits range from 300 to 360 (P360 to P600). So for a regular wood project, I would only finish it off with P120 sandpaper. Just ensuring that there are no sharp edges on there at all. However, if I was going to paint a surface after I finished it off with a 120 paper then painted it I would then rub it down with P240 sandpaper. Once this panel has had an undercoat and then you rub it down with a bit of P240 that’s going to give it a super smooth finish ready for a topcoat. Final Thoughts Grits above 320 such as 400 to 600 are typically used to get a really fine finish on wood ready for waxing or polishing. It can also be used to smooth out a top coat and fine wet sanding.Super fine micro grade paper is ideal to sand the final layer of finish on wood. It is just strong enough to thin patches and small inconsistencies in the layer's application, but not rough enough to actually remove anything that would want to be kept. FEPA classifies them as P800, P1000, or P1200 while CAMI classifies them as 400, 500, or 600, and average diameter sizes range from 15.3 to 23.0 micrometers. Ultra Fine

P400 Sandpaper– Only oil finishes like tung oil & teak oil require the surface to be finished to this level. And it’s also not a requirement for all wood working projects that use those types of finishes. Lastly, you can rely on P400 to smooth the top coats of polyurethane. Starting with the wrong sandpaper grit can add hours to your woodworking project. A grit that is too coarse may remove more material than desired and ruin the wood. And using a sanding grade that is too fine will burn time that you can’t afford to lose. But now, those days are over—provided you see our guide sooner than later. We grabbed every piece of sandpaper from our tool bag (except P150, sorry P150) and scribbled down the most common uses for each one. Since every grit level serves a specific purpose in our workshop, we want to share that information so you can avoid wasting time (& money) on the wrong sandpaper.P180 Sandpaper– If you encounter a raised wood grain fiber, P180 has your solution. Of course, you will have to refinish the wood per the original method. On a separate note, sandpaper grade P180 is a safe option for prepping latex paints. This kind of grit is used to sand bare wood to prepare it for varnish removal or final finishing. The FEPA standards denote such types of sandpaper grit by P60, or P80, and CAMI standards denote it as 80. The diameter of the particles ranges between 190 to 265 micrometers. Fine P120 Sandpaper– Any wood that was too soft for P80 will start the latter at P120. We generally use this grit when first smoothing pine, redwood, & cedar. Lastly, enamel paints and polyurethane don’t require the wood to be sanded beyond P120. The only exception would be a clear satin finish, in which case you may want to eliminate any scratches left on the wood with P150 or P180. P320 Sandpaper– When sanding between coats of polyurethane, P320 will wipe off any surface inconsistencies left from the finish. Also, wet sanding will generally use 320 as this practice requires a very fine grit as well. P80 grit sandpaper is really good for smoothing off any edges that aren’t quite flush. P80 and P120 great are good for rounding over. If my project should look quite rough, maybe quite rustic, I might make use of an 80 grit. If I want a smooth surface that I paint, I’ll use P120 sandpaper.