Drill Master XP User Manual page 57

3.
Cam Guide Sharpening Guide
Using the Variable Alignment to Adjust the
Chisel and Relief Angles
Model XP enables you to adjust the Chisel and Relief Angles of
your drill bit. The Chisel and Relief Angles have a direct effect on
the performance of your drill. By increasing the Relief Angle, you
can increase the speed of the drill in softer materials. To improve
the quality of the hole you can adjust the drill to be less aggres-
sive. A less-aggressive drill has a lower Chisel and Relief Angles.
Your Drill Doctor enables you to adjust both angles in one setting.
1.
Chisel Edge
Heel
Leading
Edge
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Sharpen by "plunging"
Line up the Sharpening Guide on
the chuck with the Cam Guide on
the machine. Plunge the Chuck into
the Sharpening Port until it touches
the Sharpening Wheel. Remove the
Chuck, rotate one half-turn clockwise
and repeat the plunge action. Start
with four plunges and always use an
even number. Inspect the bit and con-
tinue until the cutting surfaces are
sharp. If the bit stops grinding before
the edges are sharp, loosen the Chuck,
push the bit out slightly, tighten the
Cam
Chuck, and continue sharpening.
Chuck bit as usual
Cutting
Edge
To prepare your bit for this fine adjust-
ment, follow all the Steps for chucking
Relief
your bit given previously in this User's
Angle
Guide.
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