Burrs (sometimes called rotary files) are small cutters used in die grinders, rotary tools or dentist's drills. The name may be considered appropriate when their small sized head (3 mm diameter shaft) is compared to that of a burr (fruit) seed. To maintain the correct surface speed and cutting conditions they are rotated at the highest speed possible, commensurate with their size and construction. The cutters shown in the image are made from tungsten carbide which allows them to run at higher speeds than similar HSS cutters, yet still maintain their cutting edges. Burrs (the tools) are also used in Computer Controlled Machining Centres for removing burrs (the small flakes of metal) after a machining process.
 Metalworking |
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| Metalworking cutting tools | Broach • Burr • Chisel • Counterbore • Countersink • Cutting tool • End mill • Metalwork file • File • Hand scraper • High speed steel • Milling cutter • Reamer • Stellite • Tipped tool • Tool bit |
| Metalworking topics | Casting • CNC • Cutting tools • Drilling and threading • Fabrication • Forging • Grinding • Jewellery • Lathe • Machining • Machine tooling • Measuring • Metalworking • Hand tools • Metallurgy • Milling • Occupations • Press tools • Pipe and Tube bending • Smithing • Terminology • Welding |
