In addition to the drill point angle, factors that can affect successful drilling include:
- Length of the Drill
- Coolant Flow
- Type of Drill Point
Common Drill Angles
Today, with advanced drilling machines, multi-faceted drill points are the norm. Not only do they require 50% less thrust, but they also generate 60% less heat than a conventional drill point. And there are a number of different configurations, each of which—when combined with a particular drill point angle—is suitable for specific jobs.
The general purpose drill points found on most jobber drills are 118° angled drills. They are typically used for cutting into soft metals such as aluminum, whereas the 135° variant is best suited for hardened materials, such as stainless steel. A 135° drill is flatter than 118°, which means that more of its cutting lips engage with the material surface sooner to begin the full metal cutting action.
Check out our guide below for what angles are optimal based on the material that is being drilled:
Specialized Drill Point Configurations
- Are you cutting into hard metal or soft?
- Is self-centering possible or will a guide bushing be needed?
In the case of drill points, that may not be 100% true. While you can drill a hole with almost any drill point, the one you use may not be the best for the whole job, whether you are drilling one hole, a hundred holes, or thousands!
By choosing the right drill point configuration and included angle, you can receive longer tool life, more precise hole geometry, cleaner breakthrough and improved job productivity.
If you have questions about the right drill point for your job, just ask us!