Drill Doctor XP - Manual (Page 5)

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Identifying Basic Drill Bits
The Drill Doctor ® is most efficient when used to resharpen
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:
Standard Point
This general-purpose point is
used for drilling softer materials
like cold rolled steel, aluminum,
and wood.
Split Point
Split-point bits are self-centering
and are generally used for tem-
pered 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, and ceramic.
Anatomy of a Drill Bit
Chisel
Edge
It is important to understand that
each bit has all of these charac-
teristics. Cutting
Edge
Heel
Relief
Angle
When viewing a well-sharpened
bit from the end, the entire sur-
face from the Cutting 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.
Cutting Edge
The Drill Doctor ® Sharpening Process
The sharpening process includes 3 easy procedures:
1. Align the bit in the Chuck.
2. Sharpen the bit.
3. Split the point (if you choose).
Be sure to complete all three of the procedures to sharpen
and split a bit and always sharpen the bit prior to splitting it.
Heel