Craftsman 17541 Operation Manual - Page 25

EDGING

WITH

A PILOT

BIT

(Figs.

14

and

14a)

The

arbor-type

bits with

pilots

are excellent

for

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

making

too deep

a cut;

and

holding

the pilot

firmiy

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-ino

thick

uncut

portion

at the bottom),

the pilot

can

ride

against

the uncut

portion,

which

serves

to guide

it (see

Fig.

14),.

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

(see

Fig,

14a), 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

Fig° 14a

(out

from

the workpiece

edge),

the bit wilt make

less

than

a full cut

-

which

will alter

the shape

of the finished

edge.

NOTE:

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.).

Any

of the

piloted

cutter

bits can

be used

without

a

pilot for

edge

shaping

with

guides.

Fig.

14

.z/.._--..._

Motor

Housing

Spindle

Lock__

"\

Spindle

(__

[I

i}

>

-ColletiNut

/

FlxedBase

l

'

t_1

'

_

sub'base

C

Workpiece

TOP EDGE SHAPING

-_"_--_"_Top Edge

of Workpiece

Fig. 14a

]

•

Workpiece

. ....

.

iuide Board

WHOLE

EDGE

SHAPING

Whole Edge of Workpiece

WARNING:

Always

securely

clamp

your

workpiece

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.

25

Craftsman 17541 Operation Manual - Page 25

FlxedBase

Page 25 highlights