An improved method of finishing surfaces having irregular stepped portions or other edges and improved apparatus therefor. The method of the present invention includes rough finishing the surface by utilization, of a rotary tool with a first abrasive pad attached thereto. The first abrasive pad includes...http://www.google.fr/patents/US5454751?utm_source=gb-gplus-shareBrevet US5454751 - Marble, granite and stone finishing and abrasive pads therefor
Marble, granite and stone finishing and abrasive pads therefor
