Can you smooth out concrete after it dries?
There are basically two methods used to smooth off hardened concrete surfaces.
They are dry grinding and wet rubbing.
Dry grinding is done of dry concrete surfaces to remove fins and marks caused by forms.
The water, plus the rubbing action, brings up a cement paste which results in a very smooth, plaster-like surface..
How do you file acrylic plastic?
Use a 10- to 12-inch file that is considered “smooth cut.” Keep the teeth flat against the surface as you file only in one direction. Do this while the file is slightly at an angle, so you don’t create any grooves. Sand the acrylic plastic sheets with dry 120 grit sandpaper on a wooden or rubber block.
Can you file down concrete?
You can file concrete to give it a more finished appearance, smooth out rough edges or even to create artistic sculptures. Generally when filing concrete, you should use a rasp instead of a regular file because the larger teeth or grit on the rasp are better suited to the rough texture of the concrete.
How do you file down hard plastic?
Place the coarse file at the end closest to your holding hand and press the rough side down onto the edge of the plastic. Pull the file over and downward, away from where your hand is positioned, moving inward toward your body. Continue to file repeatedly, until you create a smooth surface.
How do you smooth plastic surfaces?
Use a 50/50 solution of vinegar and water to clean extensively pitted plastic, because vinegar is a weak acid, and it helps smooth the surface. Run through the sanding grits in order from 220- to 400-, 800- and 1,200-grit, finishing with 1,500- or 2,000-grit, depending on how smooth you want the surface.
How do you cut plastic cleanly?
Cut through plastic with a fine-toothed saw. Saw using the full length of the blade, and move the saw in smooth, quick back-and-forth motions through the material you’re cutting. Using a saw with fine, small teeth will allow you to cut through thick plastic precisely and without destroying the plastic itself.
Can I use sandpaper on concrete?
An orbital sander is the correct equipment to use when sanding concrete. You will want to have several different grit sizes of orbital sanding discs on hand. … To remove only a small rough patch or uneven area, you can use 1000-grit automobile black sandpaper, which is very fine and will not remove much of the concrete.
How do you sand a concrete floor by hand?
Attach 180-grit sandpaper, which is a fine grit, to a pole sander, hand sander or floor sander. Put on a respirator, and sand the entire surface of the floor lightly. When the sheen is off the surface, scuff sanding is complete.