After a thorough cleaning, the surface is further prepared either chemically or mechanically.
Chemical preparation involves the use of a powerful hydrofluoric acid etch to remove the baked on
glaze of surfaces such as porcelain and ceramic. Removal of the glaze makes the surface porous,
allowing the new finish to properly adhere to the original substrate. Mechanical preparation involves
the use of wet sanding to prepare the surface for adhesion of the new finish. This method is used for
surfaces such as fiberglass, acrylic, Formica, and cabinets.