From the Workshop: Drill Bits
Just as it seems there is a specialist tool for most jobs these days, there is also a specialist drill bit for every kind of drilling job you could imagine. If we listed every type of specialist drill bit, it would be a pretty long list, but a good knowledge of what drill bits are available when a tricky drilling job presents itself is a useful thing.
A good set of metric and imperial sized HSS twist drills will probably cover the majority of drilling jobs, but did you know they can be custom sharpened for different materials?
Download Full Article
Specialist Drill Bits for Tricky Jobs