These bits come in a plethora of styles to tackle different applications. Keep in mind that the term jobber has nothing to do with the material it is made (HSS vs cobalt vs carbide) or coating ( titanium vs black oxide). Jobber bits can be used for drilling wood and metal and they are very versatile. They usually come with a point angle of 118° or 135°. Jobber-lengths are excellent for general purpose applications since they can handle a wide variety of jobs. The flute length of a jobber bit can go from 8 to 14 times the diameter of the bit.įor example, if a jobber-length drill bit has a diameter of ¼″, its length would be 2 ¾ inches which is 11 times the diameter. The term jobber length refers to flute length (which is the length of the twisted part of the drill bit). So, let’s get into it! What Is a Jobber Drill Bit?Ī jobber drill bit is a general-purpose twist drill bit with a straight shank. I thought there may be more people confused like me and so in this article, I’ll explain what jobber bits are and how they’re measured. That said, while the applications of each drill bit are pretty obvious, what confused me the most was the jobber drill bit and its jobber length. As I gained more and more experience, I discovered that there’s basically a drill bit for everything.
Years ago, when I was first starting out as a toolmaker, I thought that all drill bits were the same, except for the sizes. Have you ever heard the term jobber drill bit and wondered why is it called so? You are not alone.
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