A method of manufacturing terrazzo tiles and tiles manufactured in accordance with the method is described. The substrate has a plurality of through holes. The reference list is then manipulated to allow a user to add to, remove from or search the references in the reference list. An end of the holding member opposite to the base bends toward the at least one latching member to form a latching portion. A difference between the incoming temperature and the outgoing temperature is then used to determine endpoint of a polishing operation.