Black & Decker AS36LN User Manual page 12

ENGLISH
Screwdriving
Always use the correct type and size of screwdriver bit.
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If screws are difficult to tighten, try applying a small amount of washing liquid or soap as
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a lubricant.
Use the spindle lock to loosen very tight screws or to firmly tighten screws.
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Always hold the tool and screwdriver bit in a straight line with the screw.
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When screwing in wood, it is recommended to drill a pilot hole with a depth equal to the
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length of the screw. A pilot hole guides the screw and prevents splintering or distortion of
the wood. For the optimum size of the pilot hole, refer to the table below.
When screwing in hardwood, also drill a clearance hole with a depth equal to half the
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length of the screw. For the optimum size of the clearance hole, refer to the table below.
Screw size
No. 6 (3.5 mm)
No. 8 (4 mm)
No. 10 (5 mm)
Drilling
Always apply a light pressure in a straight line with the drill bit.
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Just before the drill tip breaks through the other side of the workpiece, decrease
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pressure on the tool.
Use a block of wood to back up workpieces that may splinter.
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Make an indentation using a centre punch at the centre of the hole to be drilled in order
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to improve accuracy.
Drilling using a countersink drill bit (fig. G1-G3)
The countersink drill bit (12) is used to remove material to seat the screw head flush to the
surface.
Warning! Always gear the diameter of the drill bit to the diameter of the screw.
Place the drill bit into the tool.
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Drive the drill into the material (fig. G1).
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Drive the cutter on the drill bit as far into the material as necessary. Cut away sufficient
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material to sink the screw head into the material (fig. G2).
Drive the screw into the material with a screwdriver bit (fig. G3).
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12
Pilot hole ø
(softwood)
2.0 mm
2.5 mm
3.0 mm
Pilot hole ø
(hardwood)
2.5 mm
3.0 mm
3.5 mm
Clearance hole
3.6 mm
4.5 mm
5.0 mm