MasterForce 241-0300, Руководство оператора, Страница: 19 / 24

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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 trigger switch 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.
When drilling hard, smooth surfaces, use a center punch to mark the
desired location of the hole. This will prevent the drill bit from slipping off-
center as the hole is started.
When drilling metals, use 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.
WARNING! This drill is equipped with an electric brake. When the brake is
functioning properly, sparks may be visible through the vent slots in the hous-
ing. This is normal and is the action of the brake.
WOOD DRILLING
For maximum performance, use high speed steel or brad point bits for wood
drilling.
Begin drilling at a very low speed to prevent the bit from slipping off the
starting point.
Increase speed as the drill bit bites into the material.
When drilling “through” holes, place a block of wood behind the workpiece to
prevent ragged or splintered edges on the back side of the hole.
METAL DRILLING
For maximum performance, use high speed steel bits for metal or steel
drilling.
When drilling metals, use 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.
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.