OPERATING INSTRUCTIONS
7
1/8
9/64
5/32
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3/16
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5/64
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9/32
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5/16
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25/6
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13/3
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1
2
Face 1
Face 4
Face 2
Face 3
Cutting Edges (a)
Cutting Edges (a)
Center Point
Cutting Edges (a)
Slightly turn the
drill clockwise
until it locks to
the place
Read the IMPORTANT SAFETY INSTRUCTIONS section at the beginning of this manual
including all text under subheadings before set up or use of this product.
WARNING
TO PREVENT SERIOUS INJURY FROM ACCIDENTAL OPERATION OR ELECTRIC SHOCK:
Before tool assembly or adjustment, make sure the tool's switch is turned off
and the cord is unplugged.
Step 1.
Make sure that On/Off Switch (3) is in the off position, then plug in the device.
Step 2.
Clean the drill bit to be sharpened then insert to appropriate hole of Drill
Holder (2) on the top. The specification can be read from the cover.
Refer to Figure 1.
Step 3.
Slightly rotate the drill bit in clockwise direction until it locks to the place.
Refer to Figure 2.
Step 4.
Turn the device on with the On/Off Switch (3). When you can hear the grinding
sound, grind the first face (face 1) for about 5–10 seconds.
Step 5.
After grinding the first face, do not lift the drill. Slightly turn the drill in
counter-clockwise direction until it locks to the place to grind the second
face (face 2) for about 5–10 seconds.
Step 6.
Lift the drill and rotate by 180° and repeat step 4 and step 5 to grind the third
and fourth surface until both cutting edges are sharp (face 3&4).
Examine the bit as stated below:
I. A sharp centre point in the centre of the bit. Refer to Figure 3.
II. Both cutting edges (a) must have the same angle to the drill axis and be of the
same length.
Grinding Wheel Adjustment
The height of the grinding wheel could be adjusted by rotating adjusting knob (1).
If you cannot hear the grinding sound in Step 4, just rotate the adjusting knob (1)
in a clockwise direction, until you hear the grinding sound.
NOTE
I. For additional information regarding the parts listed on the following pages, refer to the
assembly diagram.
II. TO PREVENT SERIOUS INJURY FROM ACCIDENTAL OPERATION OR ELECTRIC SHOCK:
Before tool assembly or adjustment, make sure the tool’s switch is turned off and the
cord is unplugged.
III. Do not touch the drill immediately after finishing grinding to avoid burns or injury.
Figure 1
Figure 2
Figure 3
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