Sharpening The Drill Bit; Identifying Correctly Sharpened Drill Bits - Drill Master 360X User Manual

4.
Set depth of bit and
tighten Chuck.
White
With the machine turned off, align
Triangle
the White Triangle on the Chuck with
Cam Guide the Cam Guide. While keeping the
Chuck against the Cam Guide on the
Sharpening
360X, insert the Chuck into the Sharp-
Port
ening Port. Push the Chuck all the way
into the Port. Tighten the Chuck Knob
while it's still in the Sharpening Port.
Remove the Chuck and make sure it is
tight so the bit won't move when you
sharpen it. The bit should not move in
the Chuck. Your depth is now set and
you are ready to sharpen.
Sharpening the Bit
Before sharpening you should know:
Keep the Cam in contact with the Cam Guide as you
•
sharpen—push the Chuck straight into the Port.
• Only light pressure is required.
• You will hear a grinding noise
each half-turn and each side of the bit face is ground.
• The Chuck will rock as you turn it and the Cam rides on
the Guide.
1.
Align Guides.
Turn on the Model 360X. Align ei-
ther of the Sharpening Guides on the
Chuck with the Cam Guide and insert
the Chuck in the Sharpening Port.
12
z
z z
zz zz
(z z) as you complete
Sharpening
Guide
Cam Guide
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2.
Turn until sharp.
Making sure that the Chuck rests
firmly against the Cam Guide, turn the
Chuck one half-turn to the right—to
the other Sharpening Guide. Turn from
Guide to Guide in a smooth and even
motion until the bit is sharp. To sharp-
en both sides of the bit evenly, always
use an even number of half-turns. The
number of half-turns needed to sharp-
en the bit depends on its size.
Turn the Chuck an even number of half-turns with light inward
pressure:
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.
Use just enough pressure to keep the Cam against the Cam
Note:
Guide. Let the machine do the sharpening.

Identifying Correctly Sharpened Drill Bits

(and what to do with those that aren't!)
Correctly Sharpened Bits
Heel
The entire surface from the Cutting
Chisel
Cutting
Edge to the Heel will have a finely
Point
Edge
ground surface without ridges or in-
dentations. The Heel will always be
lower than the Cutting Edge (positive
relief).
Cause
Problem
Alignment Fingers did not position the
The Chisel Edge
drill bit properly in the aligning pro-
is ground flat.
cess (pages 10-11).
Solution
Realign the bit by carefully following
steps 1 through 4 on page 10-11.
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