It is necessary for the surface to be completely covered with epoxy before proceeding with polishing. To prepare the surface, several sandings are required, starting with a grit of 500 or 600 to remove defects or unevenness in the finish. Then, it is recommended to sand with progressively finer dry or wet sandpaper such as 500, 800, 1000, 2000, and 3000, and finish with a fine or very fine polishing agent. The use of a low-speed polisher or rotary sander is advised. It is important to note that these steps should be carried out carefully to avoid damaging the surface.