OPERATION
DRILLING
See Figure 13.
Check the direction of rotation selector for the correct setting (forward or reverse).�
Secure the material to be drilled in a vise or with clamps
to keep it from turning as the drill bit rotates.�
Hold the drill firmly and place the bit at the point to be drilled.�
Depress the switch trigger to start the drill.
Move the drill bit into the workpiece, applying only enough pressure to keep the bit cutting. Do not force the drill or apply side pressure to elongate a hole. Let the tool do the work.
WARNING:
Be prepared for binding at 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 material. If not prepared, this loss of control can result in possible serious injury.
When drilling hard, smooth surfaces, use a center punch |
| |
to mark the desired hole location. This will prevent the |
| |
drill bit from slipping | Fig. 13 | |
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 the workpiece or if the drill stalls, stop the tool immediately. Remove the bit from the workpiece and determine the reason for jamming.
NOTE: This drill has an electric brake. When the switch trig- ger is released, the chuck stops turning. When the brake is functioning properly, sparks will be visible through the vent slots on the housing. This is normal and is the action of the brake.
16
