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OPERATION
FEEDING THE WORK (CONTINUED)
Move to the rear and receive the planed lumber by
grasping it in the same manner as it was fed.
Do not grasp any portion of the board which has not
g one past the out-feed support roller.
Repeat this operation on all the boards which need to
be the same thickness or adjust the height.
The planer has return rollers on top so an assistant can
pass work back to the operator.
NOTE:
An assistant must follow the same precautions
as the operator.
The surface that the planer will produce will be smoother
if: a shallower depth of cut is used.
A snipe is a depression at either end of the board, caused
by an uneven force on the cutter head when work is
entering or leaving the planer.
A snipe will occur when boards are not supported
properly (see Adjusting the Support Rollers).
A slight snipe may still be noticed when the board is sup-
ported.
(Continued)
An uneven force is created when only one feed roller is
in contact with the work at the beginning or end of the
cut.
The snipe is more apparent when deeper cuts are being
taken.
When planing more than one board of the same thick-
ness, butt the boards together to avoid the snipe.
Feed the work in the direction of the grain. Wood fed
against the grain will have chipped, splintered edges.
CHECKING FOR WORN KNIVES
The condition of knives will affect the precision of the cut.
Observe the quality of the cut which the planer produces
to check the condition of the knives.
Dull knives will tear, rather than sever wood fibers, and
produce a fuzzy appearance.
A raised grain will occur when dull knives pound on
wood that has a varying density.
A raised edge will be produced where the knives have
been nicked.
MAINTENANCE
Planer will operate best if it is kept in good condition.
Keep the unit adjusted as described in OPERATION.
Also, the knives must.be kept clean and sharp to ensure
the quality of cut and efficiency of operation.
WARNING:
MAKE
CERTAIN THAT THE UNIT IS
D_SCONNECTED
FROM
THE
POWER
SOURCE
BEFORE ATTEMPTING
TO SERVICE_ OR REMOVE
ANY COMPONENT.
CLEANING
THE KNIVES
Gum and pitch will collect on knives and cause excess
friction when working. Knives will overheat and wear at
an accelerated
rate. Use a gum and pitch remover to
keep blades clean.
WHETTING THE KNIVES
Knives can be kept sharp by whetting them with a shar-
pening stone.
Remove the cutterhead guard. Partially cover the stone
with paper to protect the roller case.
Position cutterhead so stone will contact knife along its
beveled surface.
Stroke the stone across knife from one side to the other
while stone is also moved slightly in the direction of the
feed.
Make sure to do the same number of strokes on both
knives.
Replace the cutterhead guard.
REMOVING KNIVES
Knives that are noticeably nicked or worn must be resur-
faced to a new beveled edge.
Remove knives one at a time. Hold knife with knife gauge
(see Figure 3).
Loosen the knife locking bolts and remove knives.
NOTE: Many shops do not have the capability to resur-
face knives. The Yellow Pages should list "Sharpening
Services" or "Tool Grinding".
REPLACEMENT
KNIVES
Often replacing knives is less expensive than resurfac-
ing them. Keeping a spare set of knives on hand is
recommended.
Knives should always be sharpened or
replaced as a matched set.
To replace the sharpened knives reverse the steps used
in removing the knives. Adjust knives as described in AD-
JUSTING THE KNIFE HEIGHT, page 7.
LUBRICATION
Motor and cutterhead bearings are sealed and need no
lubrication.
Height adjustment
guides and elevation
screws should be cleaned of debris and greased when
needed.
Occasionally apply a few drops of light machine oil to
the gibs to keep the roller casing sliding freely in relation
to the base.
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