1. A smart filing system having a sanding or filing surface, comprising: a sanding or filing surface adapted for working a surface; at least one sensor for sensing the level of roughness or smoothness of the surface; means for analyzing the level of roughness or smoothness of the surface, the analyzing means obtaining the level of roughness or smoothness of the surface from the at least one sensor; and communication means for providing communication between at least the analyzing means and the at least one sensor.