Use a very sharp chisel to get rid of the dried hard drips. Then use a small touch up brush to touch up the rough areas where the drips were located. If necessary, use a little bit of sprackling to fill in the holes, let it dry, sand over top and the do the touch up painting with an art brush (used for painting art).
So, an excellent way to fix paint drips on a wall is by sanding or cutting the raised area. Start with your scraper, razor blade, or sanding paper – be careful to only scrape at the drip and not the wall surrounding. Once you've removed the raised portion, sand the rest of it with 220-grit sandpaper.
Correcting Runs and Sags
Let it dry completely to avoid further damage. Sand the Affected Area: Once dry, use fine-grit sandpaper (starting with 400-grit and moving up to 600 or 800-grit) to gently sand the run or sag until it's flush with the surrounding area. Be careful not to sand through to the undercoat.
if you've painted something and you end up with trips, you can fix it. just get some high grit sandpaper, 500 or more, get it wet, and then start sanding. sand until you feel like the drip is gone. and then let it dry. you can blot it with more paint. if you feel like you need to, but it should be as good as new.
The good news is you can remove and fix paint drips, splatter, and streaks even after the paint has dried by buffing out the runs with sandpaper, and it's even easier if you catch them while the paint is still wet.
If you get a run on base coat, wait 30 mins and then grab a piece of wet/dry sandpaper and spray it with 710-1 W&G remover then immediately sand the run out, have clean paper towels ready to go next to you so you can wipe off excess sanding residue and to dry the basecoat quickly.
Adding a few drops of warm water is a quick fix for dry paints. This can rejuvenate acrylic paint, making it usable for your brush and suitable for the painting surface.
Make dried paints liquid again with water
As acrylic paints are water-based, you can make these paints liquid again by adding water. Hot water is best for this, which you pour drop by drop into the pot. Then stir the dried paint thoroughly and wait for the water and dried acrylic paint to mix thoroughly.
Super Fine: 600-Grit
Likewise, if paint runs out before a panel has been fully covered, the edges of the paint can be sanded smooth with a wet 600. Basically, a 600-grit sandpaper is a perfect option when you need to salvage the panels after a paint job has hit a snag.
Base Coat
In this case, sanding between every single coat of the base coat layer, or even once it's done is unnecessary. As we mentioned earlier, any use of sanding along the base coat should only be done in the case of there being any damage, debris, or imperfections in the paint.
'You can remove hard paint drips by sanding them away if they are small or shallow,' says Frenchic. 'For larger, or more prominent drips, a clean scraper blade or similar is the best way to start by removing the majority of the hardened drip. The sand the remainder with a fine to medium sandpaper. '
Try dish soap and warm water on a cloth, or dab nail polish remover onto a tissue, and rub gently at the paint to loosen it. This will help whether the spot is wet or dry. If the surface is especially delicate, try olive oil.
While it's tempting to apply the next layer right away, rushing the process can lead to bubbling, streaking, or peeling, ultimately ruining the finish. Painting over wet paint that hasn't thoroughly dried can cause bubbling, cracking, streaks, or clumps, resulting in an undesirable finish.
Not Fully Loading the Roller
The roller needs to be fully loaded with paint to the core, otherwise you'll get air bubbles on your wall, resulting in “paint acne.” To avoid this mistake, roll back and forth on the roller tray until all bubbles are gone and the roller feels heavy.
Patchy paint can result if paint has been applied unevenly. Patchy paint can be down to a variation in surface absorption. Walls might appear patchy if they have variation in texture. Using paint that is not fully mixed can cause a patchy appearance.