Dry Overnight and Final Sanding

What happens here

After applying all three coats, let the wall dry overnight (at least 8-12 hours, but no more than 24 hours before final polishing). The manufacturer's instructions specify waiting at least two hours between coats and then no more than 24 hours for final sanding/burnishing. Once completely dry, use 600-grit circular sandpaper discs (typically used with an orbital sander but can be used by hand) to sand the entire wall in a circular motion. This sanding step helps to smooth out the surface and begin to bring out the 'highlights' of the concrete effect.

Goal: Allow the three coats to dry completely overnight, then sand the entire surface in a circular motion.