Procedure for the surface treatment of petrous materials

摘要

Procedure for the surface treatment of petrous materials, which comprises the frictioning of the surface or surfaces to be treated of the petrous material by means of brushes, the bristles of which produce progressive erosion on such surfaces, this erosion being of greater depth on zones with less hardness. The procedure permits the obtention of textures of aged appearance, the grinding and polishing of faces and edges and the removal of parts with little consistency.