Craftsman 320.2767 Operator's Manual download pdf (Page 24)

EDGING WITH A PILOT BIT (Figs.12 and 12a)

The arbor-type bits with pilots are excellent for edge shaping of any workpiece

edge that is straight, or is curved at a curvature as great or greater than

the radius of the bit to be used. The pilot prevents the bit from making an

excessively deep cut, and holding the pilot firmly 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-in. thick uncut portion at the bottom), the pilot

can ride against the uncut portion, which serves to guide it. (Fig.12).

If the workpiece is too thin or if

the bit is set so low that there

will be no uncut edge against

which to ride the pilot, an extra

board must be placed under

the workpiece to act as a guide

(Fig.12a). 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. 12a

Fig. 12

TOP E_E S_AP_NG

W_OLE EDGE _HAP_NG

(out from the workpiece edge), the bit will 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 bits; 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.

_1, 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.

2767 ManuaLRevised_lO 1213 Page 24

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Craftsman 320.2767 Operator's Manual Page 24