<p>Improve your CNC cutting abilities with the Whiteside CNC Spoilboard Surfacing Router Bit. The Whiteside Router Bits CNC Spoilboard Cutter are designed specifically to resurface, or plane, the top surface of the spoilboard. This 1/4-Inch shank bit clears the surface of your spoilboard, creating a base surface that is perpendicular to the router motor. Once you add your planed project material, you are ensured an accurate cut. This CNC bit can also be used to flatten live edge boards that may be too large to go through your planer. Three wings make a fast, clean cut on your project material.</p>