Browse through a machine-tool catalog and you’ll find many sets of jobber-length drill bits. I’ve often wondered what jobber-length meant and after seeing yet another flyer from Travers or Enco, I ...

It’s often said that you don’t need a drill bit; what you need is a hole. How you make that hole is up to you, but it’s a given that you want to make it as efficiently as possible. The drill bit, ...