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19
Masonry Drilling
For maximum performance, use carbide-tipped masonry bits when drilling holes in brick, tile,
concrete, etc.
•
Maintain a speed and a pressure that allow cutting without overheating the bit or Drill.
Applying too much pressure will:
–
Overheat the Drill.
–
Wear the bearings.
–
Bend or burn bits.
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Produce off-center or irregular-shaped holes.
•
Apply light pressure and medium speed for best results in brick.
•
Apply additional pressure for hard materials such as concrete.
•
When drilling holes in tile, practice on a scrap piece to determine the best speed and
pressure.
•
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
Driving Nuts and Bolts
WARNING
Always wear safety goggles or safety glasses with side shields
during power tool operation or when blowing dust. If operation is
dusty, also wear a dust mask.
Variable-speed control must be used with caution when driving nuts and bolts with socket-
set attachments. The best technique is to start slowly and incease speed as the nut or bolt
runs down, then set the nut or bolt snugly by slowing the drill 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.
Dust-free drilling in walls
Dust-free drilling in ceilings
Drilling in tiles without
skidding
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