Drill bits point characteristics

Point Charactristics

Type Performance BenefitsComments
Conventional Point(118°)

.General purpose

.Widely available

.Acceptable drill life

.Best suited in mild steel and aluminum

.Not self-centering;

 "walking" can occur

   on hard surfaces

.May prduce burrs on breakthrough 

Split-point(118° and 135°)

.Self centering

.Excellent for portable drilling

.Longer drill life

.Good for drilling on curved surfaces

.Improved penetration rates

.Requires less effort

.Breaks up chips

.Best suited in alloy steels

.Difficult to regrind