What do burr bits operate at that allows them to catch on rough edges?

Burr bits are designed to operate at high RPMs (Revolutions Per Minute), which is essential for their effectiveness in cutting and shaping materials. The high-speed rotation allows these bits to quickly and efficiently remove material from surfaces, particularly when dealing with rough edges. This rapid movement enables the cutting edges of the burr bit to engage with the material more forcefully, resulting in better material removal and the ability to cut through tougher surfaces.

In addition, operating at high RPM helps create a level of friction that can further aid in the material removal process. However, it is important to manage the speed correctly as too high of an RPM can lead to unwanted heat, potentially damaging both the burr bit and the workpiece. The effectiveness of burr bits at high speeds is primarily why they are preferred for tasks that require precision and efficiency when finishing or shaping materials.