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Several factors will help you select the proper rate of feed.
„ Choose a rate that does not slow down the router motor.
„ Choose the rate of feed at which the bit advances firmly
and surely to produce a continuous spiral of uniform chips
or a smooth trim edge on laminate.
„ Listen to the sound of the router motor. A high-pitched,
strained sound means you are feeding too fast.
„ Check the progress of each cut. Too-slow feeding can
cause the router to take off in a wrong direction from the
intended line of cut. Force-feeding increases the strain
of holding the tool and can result in damage to the tool.
„ Notice the chips being produced as you cut. If the router
is fed too slowly, it will scorch or burn the wood. If the
router is fed too fast, it will take large chips out of the
wood and leave gouge marks.
Always test a cut on scrap piece of the workpiece wood or
laminate before you begin. Always grasp and hold the router
firmly when trimming.
When using the largest recommended straight bit (1/4 in.)
in any type of wood, maintain a maximum cutting depth of
1/8 in. and a very slow feed rate to achieve the best quality
cut. A cross-grain cut requires a slower pace than an identi-
cal cut with the grain in the same workpiece.
There is no fixed rule. Proper feed rate is learned through
practice and use.
FEEDING TOO SLOWLY
See Figure 12, page 13.
When the router is advanced into the work too slowly it
scrapes away sawdust-like particles instead of cleanly cut-
ting into the workpiece. Scraping produces heat, which can
glaze, burn, or mar the cut, and can overheat the bit. Dull
bits can also contribute to scraping and burning.
It is more difficult to control a router when the bit is scraping
instead of cutting. With practically no load on the motor, the
bit will be revolving near top RPM. When feeding too slowly,
the bit will have a greater than normal tendency to bounce off
the sides of the cut, especially if the wood has a pronounced
grain with hard and soft areas. The cut that results may have
rippled sides instead of straight.
FORCE FEEDING
See Figure 12, page 13.
The router is an extremely high-speed tool (30,000 RPM), and
will make clean, smooth cuts if allowed to run freely without
the overload of a forced feed. Three things that cause force
feeding are bit size, depth of cut, and workpiece charac-
teristics. The larger the bit or the deeper the cut, the more
slowly the router should be moved forward. If the wood is
very hard, knotty, gummy or damp, the operation must be
slowed still more.
Clean smooth trimming and edge shaping can be done
only when the bit is revolving at a relatively high speed and
is taking very small bites to produce tiny, cleanly-severed
OPERATION
chips. If the router is forced to move forward too fast, the
speed of the bit becomes slower than normal in relation to
its forward movement. As a result, the bit must take bigger
bites as it revolves. Bigger bites mean bigger chips and a
rougher finish. Bigger chips also require more power, which
could result in overheating of the motor and lower battery life.
Under extreme force-feeding conditions, the relative speed
of the bit can become so slow – and the bites it has to take
so large – that chips will be partially knocked off rather than
fully cut off. This will result in splintering and gouging of the
workpiece and will likely damage the tool.
DEPTH OF CUT
See Figure 13, page 14.
WARNING:
If the desired depth of cut is greater than can be safely
cut in one pass, make cuts in two or more passes. Do
not remove more than 1/8 in. in a single pass. Excessive
depth of cut can result in loss of control and the possibility
of serious personal injury.
Depth of cut affects the rate of feed and the quality of a cut.
Using the proper depth of cut can lessen the possibility of
damage to the router motor and bit.
A deeper cut requires a slower feed than a shallow one.
Making a cut that is too deep will slow the feed so that the
bit is scraping, rather than cutting, and is not recommended.
A too-deep cut can cause smaller bits to be broken off.
bits that are 1/16 in. in diameter are easily broken off when
subjected to too much side thrust. A larger bit is not as likely
to break, but attempting a cut that is too deep may result in
a rough cut, and may make it difficult to guide and control
the bit as desired.
It is necessary that you do not exceed 1/8 in. depth of cut
in a single pass, regardless of the bit size or the softness
or condition of the workpiece. This will result in a higher
quality cut.
To make deeper cuts, it is necessary to make as many suc-
cessive passes as required, lowering the bit 1/8 in for each
new pass. To save time, perform all the cutting necessary at
one depth setting, then lower the bit for the next pass. This
will assure uniform depth when the final pass is completed.
SETTING DEPTH OF CUT
See Figure 14, page 14.
„ Turn the switch OFF and remove the battery pack from
the router.
„ Pull the quick release lever to the open position.
„ Using the micro depth adjustment knob, adjust the
position of the router to obtain the desired depth of cut.
• To move the motor housing down, turn the micro depth
adjustment knob toward the "down" arrow to the side
of the knob.
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