Single Lip vs Double Lip Gun Drills: What Is the Difference
I use single lip drills for most work and double lip for high production. The choice between these two gun drill types depends on the application requirements, the material being drilled, and the production volume. Here is a detailed comparison of single lip vs double lip gun drills based on my experience. Single Lip Gun Drills Single lip gun drills have one cutting edge and one chip flute. Coolant is delivered through a single hole in the tip. The single cutting edge is supported by guide pads that bear against the bore wall and keep the drill tracking straight. ...