When it comes to finding the right drill bit, you probably compare drill bit geometries, materials, and coatings. But what about left-handed drill bits? Take a closer look at three differences between right- and left-handed drill bits to understand how a left-handed bit can help your work.
Spiral Direction
The drill bit’s flute, or the slot that spirals the length of the bit, controls chip evacuation. The better the drill bit removes chips, the cleaner and easier the drilling process becomes.
When viewed from behind the drill motor, a right-handed drill bit features a spiral that rotates in a clockwise direction, while a left-handed drill bit has a spiral that rotates counterclockwise. This distinction determines the way the drill bit engages with the material.
Use With Reversible Drills
One significant difference between right- and left-handed drill bits is how they engage with reversible drills. Reversible drills are tools that can rotate in both clockwise and counterclockwise directions.
Right-handed drill bits are commonly used with standard clockwise rotation drills. However, if you use a reversible drill set to rotate counterclockwise, a left-handed drill bit will provide better results. By using a drill bit that matches the rotation direction, you can maximize the efficiency of the drilling process and gain better control over the tool.
Screw Extraction
One advantage of left-handed drill bits is how effectively they extract screws. Most fasteners are screwed in with clockwise drilling. When a screw gets stuck or becomes difficult to remove, left-handed drill bits can make it easier to remove the screw.
Use a left-handed drill bit in reverse rotation to turn the screw counterclockwise. The drilling action combined with the counterclockwise rotation will pull the screw up. This method is particularly useful when dealing with a stuck screw or a stripped screw with worn-out slots on its head.
As previously mentioned, a left-handed drill bit has a spiral that rotates counterclockwise. Since fasteners are almost always inserted with clockwise drilling, the left-handed drill bit is very effective at removing stubborn or stripped screws.
Invest in the right tools for your business by shopping for right- and left-handed drill bits at Drill Bit Warehouse. Our selection of asphalt drill bits makes masonry drilling safer, faster, and cleaner.
