Global Machinery Company BN18SB - Manual (Page 10)

10
Drilling
Drilling metals
• Always clamp sheet metal.
• Support thin metal with a block of wood to avoid
distorting it.
• Use a punch to mark the centre of the hole.
• Use a suitable lubricant for the material you are
working on,
USE: FOR:
Oil Steel
Turpentine or paraffin Aluminium
Do not lubricate Brass, copper or cast iron
Drilling plastics and plastic coated chipboard
• Use high speed drill bits
• See drilling wood below
Drilling masonry
• This drill is not designed for drilling masonry. Purchase or
hire a Hammer drill.
Drilling wood
• Clamp a piece of scrap wood to the back of your work to
prevent splintering.
All drilling operations
• Mark off the centre of the hole using a centre punch
or nail.
• Don’t force the drill, let it work at its own pace
• Keep the drill bit sharp.
• Reduce pressure, as the drill is about to break through
the item being drilled.
Chuck replacement
The chucks of reversible drills are always fixed by a screw
with a left-hand thread. The screw, which is located in the
centre of the chuck, must be removed before the chuck can
be removed. To remove the screw, turn it in a clockwise
direction. The chuck can now be removed by unscrewing it
anti-clockwise. If you have trouble removing the chuck take
the drill to your nearest authorised service centre for chuck
replacement.
CAUTION. Always ensure that the drill is switched off
and the battery pack is removed before making any
adjustments.
Maintenance
• Store the tools, instruction manual and where necessary
the accessories in the original packaging. In this way
you will always have all the information and parts ready
to hand.
• Do not throw used batteries into fire or water. There
is a danger of explosion! Please hand in non-working
or used batteries, or tools with built-in batteries, to the
environmentally-safe disposal unit at a municipal waste-
disposal centre, or to your dealer.