Drill Master 350x - Identifying Correctly Sharpened Drill Bits

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Turn clockwise to sharpen.
Making sure that the Chuck rests
rmly against the Cam Guide, turn the
Chuck from white line to white line in
a smooth and even motion. For best
results, sharpen until there is no more
grinding noise, allowing the machine
to complete its sharpening cycle.
The number of half-turns needed to
sharpen the bit depends on its size.
• 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.
Note: Use just enough pressure to keep the Cam against the Cam
Guide. Let the machine do the sharpening.
Identifying Correctly Sharpened Drill Bits
(and what to do with those that aren’t!)
Correctly Sharpened Bits
The entire surface from the Cutting
Edge to the Heel will have a nely
ground surface without ridges or in-
dentations. The Heel will always be
lower than the Cutting Edge (positive
relief).
Cause
Alignment Fingers did not position
the drill bit properly in the aligning
process.
Solution
Realign the drill bit carefully by
following steps 1 through 4 under
Aligning the Drill Bit.
Heel
Cutting
Edge
Chisel
Point
Problem
The Chisel Edge
is ground flat.