Grit Tube Attachment; Sharpening Bits Of Different Lengths, Diameters And Types; Large Drill Bits - Drill Master 750X User Manual

Grit Tube Attachment

Simply insert the Grit Tube into the Splitting Port of your
Drill Doctor when sharpening. It will catch the grit that is
formed from the sharpening process. Clean the inside of
your Drill Doctor and the Grit Tube on a regular schedule.
The grit tube is designed to accept a standard 1" shop vac-
uum for extended periods of sharpening.
Sharpening Bits of Different Lengths,
Diameters, and Types
Drill Bits Of Different Sizes
Too many rotations of a small-diameter bit may result in
incorrect sharpening and too few on a large bit may not
sharpen enough. Continue to sharpen until the Chisel
Edge is clean and straight and the entire surface from the
Cutting Edges to the Heel is finely ground.
3/32-inch bits—use 2 to 4 half-turns,
•
• 1/8-inch bits—use 4 to 6 half-turns,
3/8-inch bits—use 16 to 20 half-turns.
•

Large Drill Bits

The Model 500X sharpens bits from 3/32" to 1/2". (You
can also purchase a Large Bit Chuck that sharpens bits up
to 3/4".) The Model 750X comes equipped with that
Large-Bit Chuck. It sharpens bits from 3/32 to 3/4 inches.
Large bits are sharpened just like any other bit.
It is important to sharpen these bits so that the entire face
of the drill bit is sharpened. A large bit requires more
pressure and will require more half-turns to sharpen it.
16
The Grit Tube attachment
is designed to keep any
sparks caused by sharpen-
ing safely inside the
machine and away from
you. In addition, the Grit
Tube reduces the sharpen-
ing dust in the air and on
your workbench.
www.drilldoctor.com
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