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Congratulations on the purchase of your Darex
XT- 3000 Step Drill Attachment. (LEX250). This
attachment consists of 3 pieces, 1 Sharpening
Fixture, SA16950BA, 1 Alignment Fixture,
SA116970XA and a 3mm – 12 mm Chuck,
SA16975TA. (The 12mm – 21mm Chuck,
SA16980TA is available as an optional accessory)
All 3 components are laser marked with a Step
Drill icon to minimize confusion with other XT-
3000 attachments.
SHARPENING THE PILOT
Should the pilot of the step drill need re-
sharpened, do so, just as you sharpen a standard
twist drill. Having the exploded view drawing
handy will be beneficial at this point.
SHARPENING THE STEP
SETTING UP:
To sharpen the 'step' on your step drill, you will
have to remove the standard sharpening fixture
and replace it with the X-Y Table (LEX100). The
Step Drill Attachment works together with the X-Y
Table.
Rotate the
Docking Lever
CCW to free the
standard
sharpening
fixture, then
remove. Place
the X-Y Table on
STEP DRILL ATTACHMENT
LEX 250
the XT-3000. Rotate the Docking Lever CW to
secure the X-Y Table to the XT-3000.
Pivot Lock Knob
In a similar manner, lock the Step Drill Sharpening
Fixture on to the top of the X-Y Table. Secure the
Step Drill Alignment Fixture to the top of the XT-
3000.
ALIGNING THE DRILL:
Place the drill in the chuck and tighten chuck by
rotating the chuck knob CW. Stop just before the
chuck jaws make contact with the drill. Make sure
the drill still slides easily through the chuck. Place
the Chuck in
the Alignment
fixture until
the shoulder
of the chuck
stops against
the
alignment.
X-Axis Knob
Y-Axis Knob
53
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