Tungsten Carbide Rotary Burr Tool For Woodworking Tools Impact Toughness
1.What Speed or RPM should you use your Carbide Burrs?
The speed at which you use your carbide bur in your rotary tool will depend on the material you're using it on and the contour being produced but it's safe to say you do not need to exceed speeds of 35,000 RPM. The table below shows some approximate speeds.
If the burs are chipping easily this could be due to the speed being too slow. However, it's ideal to start the bur off slow, increasing the speed as you go along. High speeds will prevent clogging in the flutes of your burs.
| Diameter of Burr | RPM | |
| 1.6mm or 1/16" | 25,000 - 35,000 | |
| 2.35mm or 3/32" | 17,000 - 26,000 | |
| 3mm or 1/8" | 17,000 - 26,000 | |
| 6mm or 1/4" | 11,000 - 16,500 | |
| 12mm or 1/2" | 8,000 - 12,000 | |
| 16mm or 5/8" | 7,650 - 11,500 |
As with all drill bits and burrs, let the burr do the work and apply only a little pressure otherwise the cutting edges of the flutes will chip away or become smooth too quickly, reducing the life of your burr.
Our Carbide Burrs are machine ground from a specially chosen grade of carbide. Due to the extreme hardness of the Tungsten Carbide they can be used on much more demanding jobs than HSS (High Speed Steel).
Carbide Burrs also perform better at higher temperatures than HSS so you can run them hotter, and for longer.
HSS burrs will start to soften at higher temperatures so carbide is always a better choice for long term performance.
