Great for removing LOTS of material, with large tolerances in cutting width and depth of cut, quickly. But a word of warning: be prepared for MUCH more dust in the air around the CNC machine if you don't have a high CFM dust collector. My original spoilerboard planer has 2 blades and is 2.5 inches wide and I don't have much of a problem picking up dust. But the same requires about a third more passes. large square corner pockets.... the knives mill a 45 degree angle that must be removed with an extra pass of the flat router.