Tungsten Carbide Burs Solid carbide burs are designed for machining materials of virtually any hardness. They can be used for deburring, milling, chamfering, trimming, and cutting holes. Available in both double-cut and aluminum cut versions, and in twelve shapes, they are able to handle a variety of applications. Recommendations • Always operate the bur within the recommended RPM. • Select the appropriate shape, diameter and cut style for the application. • Use a smooth cutting action with constant movement in both directions. • Use light pressure, letting the bur do the work.