Craftsman 320.27680 Operator's Manual download pdf (Page 33)

FEEDING TOO QUICKLY (Fig. 25}

Clean and smooth cuts can only be achieved

when the cutter bit is rotating at a relatively

high speed, taking very small bites, producing

tiny, clean-cut chips.

Forcing the feed of the cutter bit forward

too quickly slows the rotational speed of the

cutter bit, and the bit takes bigger bites as it

rotates. Bigger bites cause bigger chips and

a rough finish. This forcing action can also

cause the router motor to overheat.

Fig. 25a

Bit Shank

Cut Cutter

TOO SLOW

Under extreme force-feeding conditions, the

speed can become so slow and the bites

become so large that chips become partially cut off, causing splintering and

gouging of the workpiece.

The router will make clean, smooth cuts if allowed to run freely without the

overload of forced feeding. You can detect forced feeding by the sound of the

motor. Its usual high-pitched whine will sound lower and stronger as it loses

speed. Holding the router against the workpiece will also be strained and harder

to do.

FEEDING TOO SLOWLY (Fig. 25a}

When you feed the cutter bit too slowly, the rotating cutter bit does not cut into

new wood rapidly enough to take a bite. Instead, it scrapes away sawdust-like

particles. This scraping produces heat, which can glaze, burn, and mar the cut in

the workpiece and, in extreme cases, overheat the cutter bit.

When the cutter bit is scraping instead of cutting, the router is more difficult to

control as you feed it.

With almost no load on the motor, the cutter bit has a tendency to bounce

off the sides of the cut in the workpiece, producing a cut with a rippled finish

instead of clean straight sides.

CHIP SHIELDS (Figs. 26 and 26a)

_1, WARNING: Always wear eye protection.

The chip shields are not intended as safety

guards.

To remove the chip shield from the fixed

base, press inward on the tabs until the

chip shield releases from the base and then

remove the chip shield. To attach, place the

chip shield back in position and flex the sides

while pushing the shield in until it snaps back

into place (Fig. 26).

The chip shield on the plunge base is held

in position with a screw. To remove the chip

27683 ManuaLRevised_11-0120 Page 33

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 51 52

Comments to this Manuals

No comments

Craftsman 320.27680 Operator's Manual Page 33

Comments to this Manuals

Related products and manuals for Power tools Craftsman 320.27680