about 45 u00b0 with respect to a plane passing through the base of base member 11 the base member is preferably disposed in a hydraulic cutting machine perpendicularly to the fluid flow the blade members b1 b2 and b3 are angled so that any fibrous material which collects on the blade will tend to move along the blade towards its free end to be discharged from the free end and thus not foul the cutting edge of the blade the cutting edge of blade b1 is at edge 17 while edge 18 is the cutting edge for blade b3 edge 19 is cutting edge for blade b2 the free end 20 of blade b1 terminates at about the vertical axis positioned at the geometric center of the base member 11 in fig4 and 5 a cutting device utilizing stubby angled parallel blades is illustrated fig4 is an elevational view of such a cutting device while fig5 is a plan view the device in fig4 is illustrated with parallel tiered blades b10 through b21 blades b10 and b15 are parallel to one another and set at the same angle with respect to base 22 blades b16 and b21 are parallel to one another positioned at the same angle with respect to base 22 and respectively aligned with blades b10 and b16 blades b11 and b14 are in the same.