What is the bullet shape used for?
The bullet-shaped head is a versatile choice for:
- Shaping and blending curved or contoured surfaces
- Rounding and smoothing internal edges
- Creating and refining chamfers
- Deburring holes, openings and shaped components
- Removing material from confined or awkward areas
- Smoothing welds and cleaning up cast or machined parts
Engineering manufacturer Tyrolit specifically recommends bullet-shaped carbide burrs for machining roundings, shaped surfaces and chamfers.
Double-cut flutes
The crossed double-cut flute pattern divides the material into smaller chips, helping the burr cut in a more controlled manner than a comparable single-cut burr. It is suitable for general shaping, deburring and material removal in ferrous and harder metals.
Double-cut carbide burrs are commonly used on steel, cast steel, stainless steel, cast iron, nickel alloys and titanium alloys.
Materials
Suitable for use on:
- Mild and hardened steels
- Stainless steel
- Cast iron
- Cast steel
- Nickel-based alloys
- Titanium and other hard metals
Please note: For aluminium, copper, brass and other softer non-ferrous metals, a more open-fluted burr specifically designed for non-ferrous materials may resist clogging more effectively.
Will it fit my rotary tool?
The burr has a 2.35mm (3/32") shank. It can be used in Dremel and similar rotary tools provided that the tool is fitted with a suitable 2.35mm collet or adjustable chuck. It is also suitable for many micromotors, pendant motors and flexible shaft systems that accept 2.35mm accessories.
If using a Dremel, an adjustable Dremel Multi-Chuck is usually the most convenient option.
How to use a tungsten carbide burr
- Secure as much of the shank as practical inside the collet or chuck.
- Start the rotary tool before bringing the burr into contact with the workpiece.
- Use light, controlled movements and allow the cutting flutes to do the work.
- Do not force, lever or twist the burr sideways.
- Keep the burr moving to avoid excessive heat in one area.
- Wear suitable eye protection and observe the speed guidance for your rotary tool.
Carbide is extremely hard but can be brittle. Excessive pressure, chatter, impacts or using the burr as a lever may damage the cutting head or shank.
