Craftsman 351.227240 Specifications download pdf (Page 12)

• Make sure that the table locks are loose.

• Rnger tigMen-_ach set screw in turn, until the screw

"bottoms out." "

• Do not overtighten the screws.

LockNuts

Table Locks

--Flgur-e 25 - Adjusting Table Gibs

• Recheck table play. If table is still loose, tighten set

screws. If table is snug, tighten lock nuts without

allowing set screws to turn.

• Check that the table raises and lowers freely when

turning the handwheel. If there is too much resis-

tance, loosen the set screws and repeat adjustment.

CHECKING FOR WORN KNIVES

Condition of knives will affect precision of cut. If blade

wear is not observed when checking the knife height,

the quality of cut will indicate the knife condition. Dull

knives will tear rather than sever wood fiber. A raised

grain will occur when dull knives pound on wood where

there is difference in density. A raised ridge will be pro-

duced where the knives have been nicked.

SHARPENING KNIVES

Refer to Figure 26.

The knives can be honed individually by whetting them

with a fine sharpening stone. Make sure oilstone is flat

and is not worn.To sharpen knives:

• Partially cover the stone with paper to protect the

table top.

• Position-infeed table so stone will contact blade

along its beveled surface.

• Stroke the stone across knife from one side to other

while stone is also moved slightly in the direction of

feed.

• Make sure to do the same number of strokes on

each place.

If the knives are nicked they must be replaced or

reground. They can be reground several times untilthey

become 91,,wide.

NOTE: Many shops do not have capabilities to resur-

face blades. Yellow pages should list =Sharpening

Services" or "Tool Grinding:

Figure 26 - Sharpening Knives

Never install unbalanced knives or reground knives less

than '/," wide.

AVOID DAMAGE TO KNIVES

Jointer/planeris a precisionwoodworkingmachine and

shouldonly be used on qualitylumber.Using bad lumber

couldresult in a poor qualitycuton subsequent pieces.

• Do not use dirty boards. Dirt and stones are abrasive

and will wear blade.

• Remove nailsand staples.Jointershouldonly cut wood.

• Avoid knots. Heavy cross-grain makes knots hard

and they can come loose and jam the jointer.

• Assess value of badlywarped boards.Operator can

be tempted to use too deep of cut to square boards

quickly.Use several passes to maintain a level surface.

FEEDING WORKPIECE

Refer to Figures 27, 28 and 29, pages 12 and 13.

Feed rate refers to rate at which wood is passed over

knives. An even feed will produce a uniform service. To

feed workpiece:

• Hold the board firmly down on both tables and

against the fence.

• Keep fingers close together.

Rgure 27 - FeedingWorkplece

• Feed the board at a continuous even rate of speed.

Any hesitation or stoppingcould cause a =step" to be

cut on the edge of the board.

• As thetrailiqg hand passes over the cutterhead,

remove the leading hand.

• Continue feeding while placing the leading hand

behind the trailing hand until the entire length of the

board is cut.

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Craftsman 351.227240 Specifications Page 12

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