Depth Of Cut; Direction Offeedandthrust - Craftsman 315.275062 Owner's Manual

OPERATION
DEPTH OFCUT
As previouslymentioned, the depth of cut is important
becauseit affectslhe rate of feed which,in turn,affectsthe
quality of a cut (and, also,the possibility of damageto your
muter motor andbit). Adeep cutrequiresa s_owerfeed then
a shallowone,and e toodeep cutwill causeyou to slowlhe
feedso much that the bit is nolonger cutting, {t is scraping,
instead..
Makinga deep cut is never advisable. The smaller bits
especially those only It16 fnch tn diameter _ are sassy
brokenoffwhensubjectedtotoomuchside thrust, A large
enoughbitmay nol be broken off,but if thecut is toodeep a
rough cutwillresult--and itmaybe verydifficu!l t oguideand
controllhe bitas desired. For _ese reasons,we recommend
thatyoudo notexceed 118inchdepthof cutin a slng;epass,
regardless o! the bit size or thesoftnessor conditionof the
workplace. See Figure 16.
To make deeper cutsit is therefore necessary to make as
many successive passes as required,lowering the bit ltB
Inchforeech newpess_ in ordertosavetime,doail thecutling
necessary at one depthsetting, b eforelowering|he bit [orthe
nextpass, Thtawiltalsoassure auniform depthwhenthefinal
passls complefed, See F/gum 1Z
DIRECTION OFFEEDANDTHRUST
_eFigumte,
The router motor andbit revolvein aclockwise dlrection.This
give9 the 'Isol a slighttendency totwist(in yourhands)In a
counlerclockwise d irection, especially when lhe motor rays
up (as at starling).
Becauseot the extremely high speed of bit rotation during a
"proper feeding"operation, there is very liL1te kickback to
contendwithunder normal conditions However,should the
bit strikea knot, hard grain,foreign object, etc. that would
alfect the normal progress of the cullingaction,thereWillbe
a slightkickback --sufficient to spoi! t he truenessofyourCUt
if you are not preparad_Such _ ktckback Jsalways tn the
directionopposite to the direction of bit rotation,
To guard against such a ldckback, plan your set-up and
directionoffeed sothatyouwillalwaysbe thrusting the tOOl
-- tOholdit againstwhateveryouare usingto guidethe cut
-- in the same direction that the 3eadingedge of the bit is
moving. In shod.thethrust shouldbe in a direction thatkeeps
the sharpedgesofthebitcontinuously b iting straigh!into new
(uncut) wood,
ROUTING
Whenever you are muting a groove, your lravel should be in
a direction thai places whatever guide you are using at the
fight-hand side In short, when the guide is posiltoned as
shown in the first pat1 of Figure 19, tool travel shoutd be left
to right and counterclockwise around curves. When the guide
is positioned as shown in the second part of Figure 19 tool
travel should be right to left and clockwise around curves.. If
there is a choice, the first sol-up is generally the easiest to
use In eilher case, the sideways thrust you use is against
the guide
Page t3
DEPTH _ WIDTH OF CUT
................. _ Fig,!6
,,,ll J , ILl _ ..l'l'r
2ND. PASS
_ISTo PASS _,,
__ , ....... _ _,
ROUTER FEED
DIRECTION
w
END
GRAINS
FIRST
ROUTER FEED ROTATION
DIRECTION
Fig, !8
GUIDE OUI_IDE
ROTAT N _'_'_
THRUST.J ,"
FEED
GUIDE INSIDE
__ Fig. ! 9._