Metal Drilling - Craftsman 11580 - C3 19.2 Volt Hammer Operator's Manual

[] If thebit jamsintheworkpiece or ifthedrillstalls,
stopthetoolimmediately. Remove t he bitfromthe
workpiece anddetermine t hereason forjamming.
NOTE: Thisdrillhasanelectricbrake. W hen theswitch
triggeris released, thechuckstopsturning. W henthe
brakeisfunctioning properly, sparkswillbevisible through
theventslotsonthehousing. Thisis normal a ndisthe
actionofthebrake.
WOODDRILLING
Formaximum performance, usehighspeed steelbitsfor
wooddrilling.
[] Select n ormal d rillingmode.
[] Begin drillingata verylowspeed to prevent t hebit
fromslipping offthestartingpoint.Increase t he speed
asthedrillbit bitesintothe material.
[] Whendrilling through holes,place a blockofwood
behind theworkpiece to prevent r agged or splintered
edges onthebacksideofthe hole.
LEVEL
METAL DRILLING
For maximum performance, use high speed steel bits for
metal or steel drilling.
[] Select normal drilling mode.
[] Begin drilling at a very low speed to prevent the bit
from slipping off the starting point.
[] Maintain a speed and pressure which allows cutting
without overheating the bit. Applying too much
pressure will:
• Overheat the drill;
Wear the bearings;
Bend or burn bits; and
Produce off-center or irregular-shaped holes.
[] When drilling large holes in metal, start with a small bit,
then finish with a larger bit. Also, lubricate the bit with
oil to improve drilling action and increase bit life.
MASONRY DRILLING
For maximum performance, use carbide-tipped masonry
impact bits when drilling holes in brick, tile, concrete, etc.
[] Slide adjustment button on hammer drill left for
hammer mode.
[] 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.
Fig. 16
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