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Craftsman 315.110790 Owner's Manual page 11

3/8 in. variable speed / reversible
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Always wear safety goggles or
safety glasses with side shields when operating
tools. Failure to do so could result in objects
being thrown into your eyes, resulting in possible
serious injury.
See Figure 9.
Fig. 9
When drilling hard smooth surfaces use a center
punch to mark desired hole location. This will prevent
the drill bit from slipping off center as the hole is
started. However, the low speed feature allows
starting holes without center punching if desired. To
accomplish this, simply operate your drill at a low
speed until the hole is started.
The material to be drilled should be secured in a vise
or with clamps to keep it from turning as the drill bit
Hold tool firmly and place the bit at the point to be
ddlled. Depress the switch trigger to start tool.
Move the drill bit into the workpieca applying only
enough pressure to keep the bit cutting. Do not force
or apply side pressure to elongate a hole.
Be prepared for binding or bit
breakthrough. When these situations occur, drill
has a tendency to grab and kick opposite to the
direction of rotation and could cause loss of
control when breaking through matedal. If not
prepared, this loss of control can result in
possible sedous injury.
When drilling metals, use a light oil on the drill bit to
keep it from overheating. The oil will prolong the life of
the bit and increase the drilling action.
If the bit jams in workpiece or if the drill stalls, release
switch trigger irnmediately. Remove t,le bit from the
workpiece and determine the reason for jamming.
See Figure 10.
A convenient feature provided with your drill is a level.
It is recessed in the motor housing on top of your drill.
It can be used to keep drill bit level during ddlling
LFig. 10



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