Ryobi R163 Manuel D'utilisation page 9

When routing a groove, the travel should be in a direction
that places the guide you are using at the right-hand side.
When the guide is positioned as shown in the "guide inside"
illustration, tool travel should be from left to right and coun-
terclockwise around curves. When the guide is positioned as
shown in the "guide outside" illustration, tool travel should
be from right to left and clockwise around curves. If there
is a choice, the first setup is generally the easier to use. In
either case, the sideways thrust you use is against the guide.
INTERNAL ROUTING
See Figure 7, page 15.
 Tilt router and place on workpiece without the bit contact-
ing the workpiece.
 Turn the router on and let the motor build up to full speed.
 Gradually feed bit into the workpiece until the subbase
is level with the workpiece.
 Upon completion of the cut, turn the router off and let the
bit come to a complete stop before removing the router
from the workpiece.
EDGE ROUTING
See Figure 8, page 15.
 Clamp a straight edge to the workpiece as a guide.
 Place the router on the edge of the workpiece without
the bit contacting the workpiece.
 Turn router on and let the motor build up to full speed.
 Gradually feed the bit into the workpiece using the
clamped straight edge as a guide.
 Upon completion of the cut, turn the router off and let the
bit come to a complete stop before removing the router
from the workpiece.
WARNING:
Do not use large router bits for freehand routing. Use of
large router bits when freehand routing could cause loss
of control or create other hazardous conditions that could
result in personal injury. If using a router table, large bits
should be used for edging only.
FREEHAND ROUTING
See Figure 9, page 15.
When used freehand, the router becomes a flexible and
versatile tool. This flexibility makes it possible to easily rout
signs, relief sculptures, etc. When freehand routing:
 Draw or layout the pattern on the workpiece.
 Choose the appropriate bit.
NOTE: A core box or V-groove bit is often used for rout-
ing letters and engraving objects. Straight bits and ball
mills are often used to make relief carvings. Veining bits
are used to carve small, intricate details.
OPERATION
 Rout the pattern in two or more passes. Make the first
pass at 25% of the desired depth of cut. This will provide
better control as well as being a guide for the next pass.
NOTE: Do not rout deeper than 1/8 in. per pass.
EDGING WITH PILOT BIT
See Figure 10, page 15.
The arbor-type bits with pilots are excellent for quick, easy,
edge shaping of any workpiece edge that is either straight
or curved at a curvature as great or greater than the radius
of the bit to be used. The pilot prevents the bit from mak-
ing too deep a cut; and holding the pilot firmly in contact
with the workpiece edge throughout prevents the cut from
becoming too shallow.
Whenever the workpiece thickness together with the desired
depth of cut (as adjusted by router depth setting) are such
that only the top part of the edge is to be shaped (leaving
at least a 1/16 in. thick uncut portion at bottom), the pilot
can ride against the uncut portion, which serves to guide it.
However, if the workpiece is too thin or the bit set too low
so that there will be no uncut edge to ride the pilot against,
an extra board to act as a guide must be placed under the
workpiece. This "guide" board must have exactly the same
contour— straight or curved—as the workpiece edge. If it is
positioned so that its edge is flush with the workpiece edge,
the bit will make a full cut (in as far as the bit radius). On the
other hand, if the guide is positioned as shown in figure 10
(out from the workpiece edge), the bit will make less than
a full cut — which will alter the shape of the finished edge.
NOTE: Any of the piloted bits can be used without a pilot for
edge shaping with guides, as preceding. The size (diameter)
of the pilot that is used determines the maximum cut width
that can be made with the pilot against the workpiece edge
(the small pilot exposes all of the bit; the large one reduces
this amount by 1/16 in.).
DIRECTION OF FEED AND THRUST
See Figures 11 - 12, page 15.
The router motor and bit revolve in a clockwise direction. This
gives the tool a slight tendency to twist in a counterclockwise
direction, especially when the motor revs up.
Feed the router into the workpiece from left to right. When
fed from left to right, the rotation of the bit pulls the router
against the workpiece. If fed in the opposite direction, the
rotation of the spinning bit will tend to throw the router away
from the workpiece causing kickback. This could cause you
to lose control of the router.
Because of the high speed of bit rotation during a proper
feeding operation, there is very little kickback under normal
conditions. However, if the bit strikes a knot, hard grain,
or foreign object that affects the normal progress of the
cutting action, there will be a slight kickback. The direction
of kickback is always in the direction opposite bit rotation.
This will affect the trueness of the cut.
9 − English