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Identifying Basic Drill Bits
The Drill Doctor is most efficient when used to sharpen a
drill bit's original point angle. With its standard Diamond
Sharpening Wheel it will sharpen high-speed steel, cobalt,
TiN-coated, carbide and masonry drill bits.
It has been designed and engineered to sharpen three of
the most common drill bit types and offer you an ability to
customize your point:
Anatomy of a Drill Bit
Cutting Edge
Chisel Edge
Relief
Heel
Angle
Heel
Cutting Edge
6
Standard Point
This general-purpose point is
used for drilling softer mate-
rials like cold rolled steel,
aluminum, and wood.
Split Point
Split-point bits are self-cen-
tering and are generally used
for tempered steels, hard
alloys or hard cast materials.
Masonry Bits
Masonry bits have a carbide
insert at the point and are
used for drilling materials
like cement,
brick,
ceramic.
It is important to understand
that each bit has a all of
these characteristics.
When viewing a well-sharp-
ened bit from the end, the
entire surface from the Cut-
ting Edge to the Heel will
have a finely ground surface
without ridges or indenta-
tions. The Heel will always
be lower than the Cutting
Edge.
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