Left Hand Drill Bit
Description
A Left Hand Drill Bit is a special type of drill bit designed to rotate in a counterclockwise direction. It is mainly used for drilling holes and for removing broken or stuck screws and bolts by loosening them during drilling.
Uses
- Drilling holes in metal, wood, and plastic
- Removing broken or seized screws and bolts
- Used with reverse rotation drilling machines
- Helpful in repair and maintenance work
- Used along with screw extractors
Parts
- Shank
- Flutes
- Cutting Edges
- Point (Tip)
Material
- High-speed steel (HSS)
- Cobalt steel (for harder materials)
- Coated materials (e.g., titanium coating)
Working Principle
The Left Hand Drill Bit works on the principle of rotary cutting in reverse direction. When rotated counterclockwise, the cutting edges remove material while also applying loosening force to stuck fasteners, often allowing them to be removed without additional tools.
Advantages
- Useful for removing broken fasteners
- Dual-purpose drilling and extraction
- Reduces need for additional tools
- Efficient and time-saving
- Available in various sizes
Safety Precautions
- Use correct drill speed and pressure
- Wear safety goggles
- Ensure proper alignment before drilling
- Secure the workpiece firmly
- Do not apply excessive force
Conclusion
The Left Hand Drill Bit is a versatile and useful tool for drilling and removing damaged fasteners. Its unique reverse cutting action makes it especially valuable in maintenance and repair operations.