Rate Of Feed; Feeding Too Fast; Feeding Too Slow - Craftsman 17540 - 9.5 Amp 1-3/4 HP Plunge Base Router Operator's Manual

RATE O F FEED ( Figs. 17and 17a)
The p roper
rate of teed depends on several factors:the hardnessand moisture content
of theworkplace, the depth of cut, and the cutting dEameterof the bit, When you are
cuttingshaliow groovesIn soft woods suchas pine, you may use a faster rate of feed,
When making deep cutstn hardwoodssuch as oak, you should use a slower rate of feed_
FEEDINGTOO FAST (Fig. 17)
r"J_B_t
Clean and smooth finished cutscan only ! _1 Shank
be, achieved when the cutter bitis rotating
m..r,z r_,,_ = =
at a retat{valy highspeed, taking veryemaff
"'_"- v_'" I I
bites, producingtiny,clean cut chips.
Fumingthe feed of the cutter bit forward too
fast slowsthe RPM of the cutterbit, and the bit
takes bigger bites as It rotates, Bigger bites
mean biggerchips and a rough finish, TOO FAST cutter
This forcing acUon can also cause the
router motorto overheaL
Under extremeforce-feeding conditions,the RPMs can becomeso slow and the bites
become so large that chips become partiallycut off, causingsplintering and gouging
ofthe workpiece_
The muterwill m ake crean, s mooth cutsIf allowed torunfreely without t heovedoadof
forced feeding. You can detect forced feeding by the sound of the motor, its usual
hfgh-pRched whine witrsound lower and strongeras it loses speed. Holding the router
against the workplacewilt also be strained and harder todo_
FEEDING TOO SLOW (Fig. 17n)
When you feed the culter bit too slowly,
the rotatingcutterbit does not cut Into
new wood fast enough 1otake a bite,
Instead, it scrapes away sawdusFIIke
partlcles.Thisscraping produces heat,
whichcan glaze, bum and mar the cut
in the workpleceend, in extreme cases,
overheat the cutterbit,
When the cutterbit Isscraping Instead
of cuffing,the muteris more difficult to
controlas you feed it,
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F_ll hank
Cutter
TOOSLOW
With almostno toed on the motor, the cutterbtl has a tendencyto bounce off the sides of
the cut In the workplace, producinga cutwith a rippledfinishInstead of clean straight sides.
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