- Before buffing the surface, it has to be completely clean and free of grit or dust. If it isn't, then dirt could end up ground right into the surface. Use a pH-neutral household cleanser without any abrasive in it. Wipe it over the surface with a soft sponge, then rinse it well. Use an old toothbrush and a little extra cleanser to scrub around the faucet, faucet handles, drain cover and other hard-to-get-to places. Dry the surface with a soft cloth.
- Use a high-speed hand-held buffer (1,500 to 2,500 rpm) and 1,000-grit wet-use sandpaper to wet-sand the surface. This is done by squeezing a pool of water from a sponge onto the surface the cultured marble, setting the circular sanding pad into the water, and turning on the machine. You can add a drop of automotive finishing compound to the water but it isn't a requirement. Don't press hard on the buffer, just hold it lightly and let the rotating pad do the work. After each area is lightly sanded and the scratches are out, pour more water on the next area and move on.
- After sanding, rinse the surface very well and dry it with soft cloths. Set up your hand-held buffer with a wool buffing pad. Go over the whole surface dry with the pad, letting it buff and shine up the surface. Look at the surface from different angles to make sure you've gotten all the scratches and dull spots out. Follow up by polishing with a liquid polish made for cultured marble. Apply polish with a soft cloth, let it dry, then buff it off by hand with another soft cloth. Re-polish regularly, once a week, to keep the surface shiny and provide extra protection grit and dirt.
