Urrea RRD950 Manual De Usuario página 25

the workpiece, the depth of cut, and the cut-
ting diameter of the bit. When cutting shallow
grooves in soft woods such as pine, you may
use a faster rate of feed.
When making deep cuts in hardwoods such as
oak, you should use a slower rate of feed.
FEEDING TOO RAPIDLY (FIG. 7)
Clean and smooth finished cuts can only be
achieved when the cutting bit is rotating at
a relatively high speed and taking very small
bites producing tiny, clean-cut chips.
Forcing the feed of the cutting bit forward too
rapidly slows the RPM of the cutting bit, and
the bit takes larger bites as it rotates. Larger
bites mean larger chips and a rough finish. This
forcing action can also cause the router motor
to overheat. Under extreme force-feeding con-
ditions, the RPMs can become so slow and the
bites become so large that chips become par-
tially cut off, causing splintering and gouging
of the workpiece.
FIG. 7
Bit Shank
Cut
TOO FAST
The router will make clean, smooth cuts if it
is allowed to run freeiy without the overload
of forced feeding. You can detect forced feed-
ing by the sound of the motor. Its usual high-
pitched whine will sound lower and stronger
as it loses speed. Holding the router against
the workpiece will also be more difficult to do.
FEEDING TOO SLOWLY (FIG. 8)
When you feed the cutting bit too slowly, the
rotating cutting bit does not cut into new
wood rapidly enough to take a bite. Instead, it
scrapes away sawdust-like particles.
FIG. 8
Cut
TOO SLOW
Cutter
Bit Shank
Cutter
E N G L I S H •
This scraping produces heat, which can glaze,
burn, and mar the cut in the workpiece and, in
extreme cases, overheat the cutting bit. When
the cutting bit Is scraping instead of cutting,
the router is more difficult to control as you
feed it.
With almost no load on the motor, the cutting
bit has a tendency to bounce off the sides of
the cut in the workpiece, producing a cut with
a rippled finish instead of clean, straight sides.
CHIP SHIELDS
WARNING: Always wear eye protection. The
chip shields are not intended as safety guards.
WARNING: Always turn the router motor off
and unplug the router from its power source
before making any adjustments or installing
accessories. Failure to turn the router motor
off and unplug the router could result in ac-
cidental starting, which can cause serious per-
sonal injury.
To remove the chip
shield from the base,
press inward on the
tabs until the chip
shield releases from
the base and remove
the chip shield. To at-
tach, place chip shield
in position, and flex
sides while pushing it in until it snaps back into
place.
WARNING: The chip shield deflectors help
keep dust and chips away from the operator;
they will not stop objects larger than wood
chips thrown from the bit.
CAUTION: Always have the chip shield de-
flector in place on the base when operating
the router.
DUST EXTRACTION HOOD
To attach the hood
onto the base, align
the two tabs on the
hood with the two
slots on the port, lo-
cated on the back of
the base, and secure
it by turning it clock-
wise.
WARNING: Always turn the router motor off
and unplug the router from the power source
before making any adjustments or installing
U se r's m a n ua l
25