Rate Of Feed; Feeding Too Fast - Craftsman 320.2768 Operator's Manual

When the guide is positioned as shown in Fig. 17a, the router travel should
be from left to right and clockwise around
curves.
If there is a choice, the set-up in Fig. 17 is
easier to use, but there is the possibility of
"Climb Cutting" around curves. In either case,
Fig. 17 or Fig. 17a, the sideways thrust of the
router cutting is always against the guide, as
is proper.
A_, WARNING: Always securely clamp the
workpiece in place, and keep a firm grip on
the router base with both hands at all times.
Failure to do so could result in loss of control
causing possible serious personal injury.
RATE OF FEED (Figs. 18 and 18a)
The proper rate of feed depends on several
factors: the hardness and moisture content
of the workpiece, the depth of cut, and the
cutting 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.
GUIDE OUTSIDE
Fig. 17 _"
BIT ROTATION
THRUS
i I
BIT ROTATIO
ROUTER FEED GUIDE DIRECTION
Fig. 15a GUIDE INSIDE
BIT ROTATION
GUIDE
BIT ROTATION
ROUTER FEED DIRECTION
FEEDING TOO FAST (Fig. 18)
Clean and smooth cuts can only be achieved
when the cutter bit is rotating at a relatively
high speed, taking very small bites and
producing tiny, clean cut chips.
Forcing the feed of the cutter bit forward too
rapidly slows the rotation speed of the cutter
bit, and the bit takes larger bites as it rotates.
Bigger bites mean bigger chips and a rough
finish. This forcing action can also cause the
router motor to overheat.
Under extreme force-feeding conditions, the
rotations can become so slow and the bites
become so large that chips become partially
cut off, causing splintering and gouging of the
workpiece.
The router will make clean, smooth cuts if it is
allowed to run freely without the overload of
forced feeding. You can detect forced feeding
Fig. 18
Fig. 18a
Bit Shank
Cut
Cutter
TOO FAST
TOO SLOW Cutter
2768 ManuaLRevised_11-0307 Page 27