220 3m its a finer sand paper you can take the paint as low as you want with it it works great. You should always prime over a 220 grit scratch. It is the perfect size grit. If you are sanding primer so you can apply topcoat, finish with 400grit dry on a machine (DA) or 500 wet sand for a solid color enamel. Basecoat products, particularly metallics and pearls, need to be applied over a substrate that has been wet sanded with 600 grit.
320 grit
abrasive grit, probably used in sandpaper
I would use a fine grit like 220 or so.
When sanding a car, start with a coarse grit sandpaper, typically around 80 to 120 grit, for initial paint removal or to smooth out rough surfaces. For subsequent sanding, use medium grit sandpaper, like 320 to 400 grit, to refine the surface before priming or painting. Finally, finish with a fine grit, such as 600 to 800 grit, for a smooth surface prior to applying the final coats. Always ensure to use wet sanding techniques for the finer grits to minimize dust and achieve a better finish.
400 grit sandpaper, before sanding melamine wash the surface with TSP soap and the rinse with water to remove any TSP residue
After primer is applied, use 220-grit sandpaper for a smooth surface. Change sandpaper frequently, and wipe the primer down to remove dust. Vacuum the floor to remove the dust, and keep it from flying back up onto the primered surface.
When sanding primer before painting, start with a fine-grit sandpaper to smooth the surface. Sand in a circular motion to avoid creating visible scratches. Wipe down the surface with a clean cloth to remove dust and debris. Repeat the process with a finer grit sandpaper for a smoother finish.
you can put primer on scuffed surfaces. but really its a waste. if you scuff the paint with 320 grit sandpaper thats all you should need . unless you sand down to bare metal then you can hit it with primer
For polyurethane, it is recommended to use a fine grit sandpaper, such as 220 grit, to achieve a smooth finish.
To effectively sand wood, you should use a medium grit sandpaper, such as 80 to 120 grit, to remove rough surfaces and imperfections.
For glass bottles, it is recommended to use a fine grit sandpaper, such as 220 grit or higher, to avoid scratching or damaging the glass surface.
When sanding brake pads, it is recommended to use a fine grit sandpaper, such as 220 grit or higher, to avoid damaging the brake pads.
For sanding a deck, it is recommended to use a medium grit sandpaper, such as 80-120 grit, to effectively remove old finish and smooth out the surface.
For effectively removing stain from a surface, start with a medium grit sandpaper, such as 80-120 grit, to strip away the top layers of the stain. Then, switch to a finer grit sandpaper, like 150-220 grit, to smooth out the surface and remove any remaining residue.
For removing a stain from wood, start with a medium grit sandpaper like 80 or 100 to effectively remove the stain without damaging the wood. You can then progress to a finer grit sandpaper for a smoother finish.
For sanding pressure treated wood, it is recommended to use a medium grit sandpaper, such as 80 to 120 grit. This grit level is effective in removing roughness and preparing the surface for finishing.
For sanding pallet wood, it is recommended to start with a medium grit sandpaper, such as 80 or 100 grit, to remove rough surfaces and imperfections. You can then progress to a finer grit, like 120 or 150, for a smoother finish.