Skil DL527502 Owner's Manual page 18

Masonry Drilling
For maximum performance, use carbide-tipped masonry bits when drilling holes in brick, tile,
concrete, etc.
a. Maintain a speed and a pressure that allow cutting without overheating the bit or drill driver.
Applying too much pressure will:
Overheat the drill driver.
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Wear the bearings.
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Bend or burn bits.
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Produce off-center or irregular-shaped holes.
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b. Apply light pressure and medium speed for best results in brick.
c. Apply additional pressure for hard materials such as concrete.
d. When drilling holes in tile, practice on a scrap piece to determine the best speed and
pressure.
e. Begin drilling at a very low speed to prevent the bit from slipping off the starting point.
NOTICE: Fig. 12 shows some tips for different drilling operations.
Fig. 12
Dust-free drilling in walls
Driving Nuts and Bolts
WARNING
dusty, also wear a dust mask.
Variable-speed control must be used with caution for driving nuts and bolts with socket-set
attachments. The technique is to start slowly, increasing speed as the nut or bolt runs down.
Set the nut or bolt snugly by slowing the drill driver to a stop. If this procedure is not followed,
the tool will have a tendency to torque or twist in your hands when the nut or bolt seats.
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Always wear safety goggles or safety glasses with side shields
during power tool operation or when blowing dust. If operation is
Drilling in tiles without skidding