Abstract:Wood density makes important effect on cutting resistance. Following the former report, we have studied the relationship between wood density and cutting resistance with Korean pine and Manchurian ash. The main results are as follows: 1) The relationship between wood density and cutting resistance varied with wood species, cutting direction, chip thickness, knife rake angle and moisture content of wood. 2) There existed a common tendency of the effects of chip thickness, knife rake angle and moisture content of wood on the relationship between wood density and cutting resistance and such tendency could be described with a simple linear equation. 3) The scatter of the data on the density-cutting resistance relation implies that besides density there exsit some other factors affecting cutting resistance. An analysis showed that being observed in a relatively wide scope, no significant difference of the distribution of such factors was shown both in the directions of height and diameter within a tree.