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G0505 12
1
⁄2" Lean & Mean Portable Planer
-16-
Wavy Surface
Problem—Caused by poor knife height adjust-
ment, wavy surface appears when one knife is
taking deeper cuts than the rest of the knives.
Solution—Reset knife height with the gauge.
Pitch & Glue Build-up
Problem—Glue and resin build-up 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 as well as uneven knife
marks and chatter.
Solution—Clean the rollers and cutterhead.
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 dust chute. Instead
they are carried around the cutterhead, deposited
on the planed surface and crushed by the outfeed
roller. Chip indentations can be caused by a num-
ber of reasons, some of which are:
a. The type of lumber being planed. Certain
species have a tendency to chip bruise.
b. A high moisture content (over 15%) and/or
surface moisture. Typically found in air-dried
stock where the surface is dry but the inside
needs a longer time to season.
c. Dull knives.
d. Too much material being removed in one
pass.
Solution—
a. 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.
b. Make sure planer knives are sharp.
c. Reduce depth of cut.