Milwaukee 5517-20 Manuel De L'utilisateur page 7

Drilling Large Diameter Holes with Core Bits
When drilling holes with large dia-
meter core bits, dust may build up
in the cut and can cause the tool
to stall, bind, or cut slowly. By
creating an opening for the dust
to escape, drilling time, bit stress,
and tool stress can be reduced.
1. Start the cut as normal.
2. Once the bit is firmly estab-
lished in the cut (about 1/4"
deep), remove the bit from
the cut.
3. Remove the bit from the tool.
4. Install a standard fluted bit,
approximately 7/8" in diameter,
onto the tool.
5. Drill a perpendicular hole
through the kerf of the large hole.
• Depending on the location
of the work, the hole should
either break through the other
side of the hole/floor or extend
4"-5" past the end of the work-
piece (such as into the dirt
below a concrete slab).
• If dust builds up in the hole,
vacuum it out and continue
drilling.
• If drilling through a wall, the
hole for dust should be drilled
on the lowest part of the large
hole kerf as the dust will fall
there when drilling and can be
evacuated more easily.
6. Reinstall the core bit and con-
tinue drilling. Dust and debris
will fall through the hole and
optimize the cutting ability of
the bit.
NOTE: If unable to drill a hole
in the kerf, pull back on the bit
with the hammer running. This
will remove some of the dust
and debris from the cut. Repeat
this for every inch of drilling. If
necessary, vacuum dust and debris from the cut and
surrounding area.
7. For core bits, once the maxi-
mum core bit depth is drilled,
the core must be broken and
removed.
• Install a chisel bit.
• Place the chisel into the hole
kerf.
• Chisel down into the kerf at several points until
the core is loose or broken.
• Remove the core and vacuum/remove any re-
maining dust and debris.
• Install the core bit and continue the cut.
work:
• Always use the "hammering-only" setting to
Cut
approximately
1/4" deep with a
core bit.
• Never switch the tool to "hammering-with-
Drill a hole
MILWAUKEE Rotary Hammers may be used for
through the
chipping and chiseling.
work.
When chiseling, hold the tool at an angle to the
workpiece. Work from a corner or close to the edge
of the workpiece, breaking off one small area at a
time rather than attempting too large an area.
A variety of accessories are available.
Top view
Dust and debris
will fall through the
hole.
Side view
Pull bit out as far
as possible once
or twice per inch
drilled.
7
To reduce the risk of personal in-
WARNING
jury and damage to the tool or
set the anchor. Never use the "hammering-with-
rotation" setting to set the anchor.
rotation" until after the anchor has been set
and the tooth anchor chuck has been removed
from the anchor.
Chiseling and Chipping
Bushing Tools
Used to surface concrete.
Mortar Cutting Chisels
(Seam Tools)
For removing old mortar for
tuck pointing or caulking.
Bull Points
For demolition work and
starting holes in concrete
slabs.
Flat Chisels
For edging, chipping or
channeling.
Scaling Chisels
For removing weld spatter
or scale and cutting straight
lines.
Slotting Chisel
For slotting and cutting
between drilled holes in
concrete and masonry.