USING THE DRILL
DRILLING
When drilling the following points should be observed.
1 Always use sharp, good quality drill bits. The performance of your drill is
dependant on the quality of the bits used.
2 Reduce the pressure on the drill bit when it is about to break through. This
will prevent the drill from jamming.
3 If the drill bit does jam on breakthrough, release the trigger switch and
when the motor has come to a standstill, reverse the direction of rotation
and slowly operate the trigger switch.
4 If drilling a large hole, first drill a pilot hole using a smaller drill bit.
5 Always apply pressure to your drill bit in a straight line and, where
possible, at right angles to the workpiece.
6 When drilling holes or driving screws into walls, floors etc., always make
sure that there are no live electrical wires in the path of the bit.
7 When drilling in metal, the materials being drilled can become hot. To
reduce overheating use a suitable cooling lubricant. No cooling lubricant
is necessary when drilling cast iron or brass as they should be drilled dry.
8 To prevent the drill bit from slipping when starting to drill a hole in metal,
use a centre punch to make an indentation at the start point.
9 When drilling in wood, clamp a piece of scrap wood to the underside of
the material to avoid splintering.
10 Large holes should be drilled with wood augers, flat wood bits or hole
saws.
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