Setting Depth Of Cut (Lower Cutterhead) - Grizzly G0841 Owner's Manual

Pitch & Glue Build-Up
Problem: Glue and resin buildup on the roll-
ers and cutterheads will cause overheating by
decreasing cutting sharpness while increasing
drag in the feed mechanism. The result can
include scorched lumber, uneven insert 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 machine. Instead
they are carried around the cutterheads, de-
posited on the planed surface and crushed by the
outfeed roller. Some of the causes of chip inden-
tation are:
•
Wood chips/sawdust not being properly
expelled from the cutterheads.
•
The type of lumber being planed. Certain
species have a tendency to chip bruise.
•
A high moisture content (over 20%) or
surface moisture.
•
Dull inserts.
•
Excessive depth of cut.
Solution:
•
Use a proper dust collection system; adjust
chip deflector in or out as necessary.
• 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 planer inserts are sharp.
• Reduce depth of cut.
Rippled Cut
Problem: Regularly spaced indentations across
face of workpiece are caused by excessive roller
pressure or excessive feed rate.
Solution: Reduce roller pressure; reduce feed rate.
-36-
Setting Depth of Cut
(Lower Cutterhead)
Setting Lower Cutterhead
The lower cutterhead performs the surface plan-
ing of the workpiece (see Figure 38). This makes
a flat face on the workpiece, preparing it for thick-
ness planing by the upper cutterhead. Depth of
cut means the amount of material that is removed
from the bottom of the workpiece as it passes
over the lower cutterhead.
Removed
Surface
Figure 38. Example of surface planing.
Lower cutterhead depth of cut is determined by
the height of the infeed table. During operations,
the position of the lower cutterhead is fixed. Infeed
table height is adjusted with the handwheel (see
Figure 39) and measured with the depth-of-cut
scale on the front left side of the machine (see
Figure 39).
Scale
Pointer
Figure 39. Location of infeed table handwheel
and depth-of-cut scale.
Model G0841 (Mfd. Since 06/18)
Depth-of-Cut
Scale
Handwheel