Craftsman 315.175170 Operator's Manual page 18

INTERNAL ROUTING
 Tilt router and place on workpiece without the cutter
contacting the workpiece.
 Turn the router on and let the motor build up to full
speed.
 Gradually feed cutter into the workpiece until the sub-
base is level with the workpiece.
 Upon completion of the cut, turn the router off and let
the cutter come to a complete stop before removing
the router from the workpiece.
WARNING:
Do not use large router cutter for
freehand routing. Use of large router cutters when
freehand routing could cause loss of control or cre-
ate other hazardous conditions that could result in
personal injury. If using a router table, large cutters
should be used for edging only. Do not use cutters
that are larger in diameter than the opening in the
router subbase.
OPERATION
EDGING WITH PILOT CUTTERS
See Figure 17.
The arbor-type cutters 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 cutter to be used. The pilot prevents the
cutter from making too deep a cut; and holding the pilot
firmly in contact with the workpiece edge throughout pre-
vents 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 inch thick uncut portion at bottom),
the pilot can ride against the uncut portion, which will
serve to guide it. However, if the workpiece is too thin or
the cutter 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 cutter will make a
full cut (in as far as the cutter radius). On the other hand, if
the guide is positioned out from the workpiece edge, the
cutter will make less than a full cut—which will alter the
shape of the finished edge.
NOTE: Any of the piloted cutters can be used without a
pilot for edge shaping with guides, as preceding. The size
(diameter) of the pilot that is used determines the maxi-
mum cut width that can be made with the pilot against the
workpiece edge (the small pilot exposes all of the cutter;
the large one reduces this amount by 1/16 in.).
Fig. 16
PILOT
18
ROUTER
WORK
TOP EDGE SHAPING
ROUTER
WHOLE EDGE SHAPING
PILOT
GUIDE
WORK
Fig. 17