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Model W1842 (For Machines Mfd. Since 6/17)
Chip.Marks.or.Indentations
Problem: Chip indentation or chip bruising is
the result of wood chips not being thrown away
from the cutterhead and out of the machine.
Instead they are carried around the cutterhead,
deposited on the planed surface and crushed by
the outfeed roller. Some of the causes of chip
indentation are:
•
Wood chips/sawdust not being properly
expelled from the cutterhead.
•
The type of lumber being planed. Certain
species have a tendency to chip bruise.
•
A high moisture content (over 20%) or
surface moisture (refer to Page.23).
•
Dull knives.
•
Excessive depth of cut.
Solution:
•
Use a proper dust-collection system; adjust
chip deflector in or out as necessary (refer
to Page.54).
•
Lumber must be completely dry, preferably
kiln-dried (KD). Air-dried (AD) lumber must
be seasoned properly and have no surface
moisture. DO NOT surface partially air-
dried (PAD) lumber.
•
Make sure knives are sharp.
•
Reduce depth of cut.
Rippled.Cut.
Problem: Regularly spaced indentations across
face of workpiece are caused by excessive
outfeed roller pressure or excessive feed rate.
Solution: Reduce outfeed roller pressure
(refer to Page.52); reduce feed rate (refer to
Page.27).
Pitch.&.Glue.Build-up.
Problem: Glue and resin buildup on the rollers
and cutterhead will cause overheating by
decreasing cutting sharpness while increasing
drag in the feed mechanism. The result can
include scorched lumber, uneven knife marks,
and chatter.
Solution: Clean the feed rollers and cutterhead
(refer to Page.52).
-25-
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