Drill Doctor 400 - Manual (Page 10)

8
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Sharpening the Drill Bit
Before sharpening you should know:
• Keep the Cam in contact with the Cam Guide as you
sharpen—push the Chuck straight into the hole.
• Only light pressure is required—let the diamond wheel do
its work.
• Turn the Chuck an even number of half-turns:
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 6 or more half-turns.
• You will hear a grinding noise as you complete each half-
turn and each side of the bit face is ground.
(z
z
z z z z z
z
z)
• The Chuck will rock as you turn it and the Cam rides on the
Guide.
13.
12.
Insert the Chuck into the
Sharpening Hole.
It will be easier to sharpen the
bit if you stand up.
Align one of the white marks on
the Cam with the Cam Guide,
and push the Power
Switch to the ON (I)
position.
14. Turn the Chuck in complete half-
turns to the right so the white
marks on the Chuck move to the
Cam Guide one after the other.
It is important that your half-
turns be continuous—do not
stop or hesitate in the middle.
Cam Guide
White Mark
Cam