Influence of machining methods on wood surface roughness and adhesion strength

Planing and sanding were used to surface Mongolian Scotch Pine, Asian White Birch and Manchurian Ash. The surface roughness was measured using a stylus method before coating, and the adhesion strength using a pull off method after coating. Wood species and sanding had significant influence on surface machining roughness and adhesion strength. Sanded birch had the highest adhesion strength, while pine without sanding had the lowest. For a certain wood species, surface roughness and adhesion strength can be controlled by changing machining methods.