Q: This is not earth-shaking, but we were wondering if they make left-handed drill bits.

A: Yes, they do make drill bits that have the threads running the "wrong" direction, which makes them left handed. They were used primarily before CNC machines.

One important use is when a screw head is damaged and cannot be removed using the normal tools. By drilling out the screw with a left-handed bit, the rotation will tend to unscrew the normal, right-handed screw. That can be very helpful indeed.

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