Craftsman 320.17541 operating instructions Edging with a Pilot BIT Figs and 14a

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.

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