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Use a Paint Sprayer or Spray Paint

Sand with 320 or 400 grit sandpaper. Make sure you have already filled all holes and nicks, if you want a perfectly smooth finish. After the 1st coat, sand with the fine grit sand paper and then clean off thoroughly with a washcloth.Jan 17, 2013

Use sandpaper or a sanding block to dull any uneven surfaces, wipe away dust with a damp cloth and let dry thoroughly. Smoothing walls before painting is necessary for surfaces previously painted with a gloss or high-gloss paint. ... For oil-based paint, a medium-grit sandpaper (100- to 150-grit) should be used.

Sandpaper is sold in closed coat, where 100% of the surface is covered by abrasive particles and open coat, which has coverage in the 50 to 70% range. Open coat is much better for power sanding wood because the debris from sanding (called swarf) has someplace to go.May 5, 2020

Coarse grits are typically in the 40- to 50-grit range. Medium sandpaper, ranging from 60- to 100-grit, accommodates some final shaping. Primary sanding of rough wood and the removal of planning marks on wood is often best done with medium-grit sandpaper. Fine sandpapers range from 120- to 220-grit.Oct 30, 2019

Sandpaper is a special thick paper with a rough, abrasive surface. Painters will often sand a wall with sandpaper before painting it. Woodworkers use sandpaper to smooth wooden surfaces, and sandpaper is also useful for removing loose paint, grit, or dirt when you're painting or refinishing something.

You have two ways to eliminate them. Try sanding first to see if that will work. Use 80-grit, non-clog sandpaper on either a sanding pole or a sanding block (Photo 1). Use a “clog resistant” type, such as 3M Sandblaster sandpaper, or wipe the sandpaper often with a stiff brush to keep it from clogging up.

After the final coat of flat paint, sand lightly with super fine sandpaper. Your project should be smooth and even. Remove sanding residue with a soft bristled brush attachment on a vacuum. ... Sand with fine sandpaper between coats.Apr 18, 2017

Sanding in between coats of paint on any surface removes imperfections like nap from the roller, dust or anything that may have stuck to the wall after it was applied. It also makes the wall smooth and more mirror like if you are using a higher sheen finish.

If you don't sand before painting you will likely end up with an uneven finish and a paint job that will likely end up peeling after a few months. You may also be able to see any lighter or darker patches of the book come through the paint which looks ugly and unprofessional.May 20, 2021