Model G0634X (Mfd. Since 11/20)
-25-
With Grain
Against Grain
CORRECT
INCORRECT
Figure 23
. Correct and incorrect grain alignment
to cutterhead (planer).
• Minor Cupping: Workpieces with slight cup-
ping can be safely supported if cupped side
is facing table. On the contrary, workpiece
supported on bowed side will rock during
operation and could cause severe injury from
kickback.
• Remove foreign objects from stock. Make
sure that any stock you process with jointer/
planer is clean and free of any dirt, nails, sta-
ples, tiny rocks or any other foreign objects,
which if they hit inserts and are drawn
into dust collector, may cause fire hazard.
Particles may also damage inserts. Wood
stacked on concrete floor can have small
pieces of stone or concrete pressed into sur-
face.
• Only process natural wood fiber through
jointer/planer.
Never joint or plane MDF,
particle board, plywood, laminates or other
synthetically made materials.
• Make sure all stock is sufficiently dried
before jointing or planing.
Wood with mois-
ture content over 20% will cause unneces-
sary wear on inserts and poor cutting results.
Excess moisture can also hasten rust and
corrosion.
•
Scrape all glue off of boards before
planing.
•
Keep work area clear.
Stock Inspection &
Requirements
With Grain
Against Grain
CORRECT
INCORRECT
Figure 22.
Correct and incorrect grain alignment
to cutterhead (jointer).
Basic rules to follow before milling stock on
a jointer or thickness planer:
• Large/Loose Knots: Loose knots can
become dislodged and kickback during
operation, causing machine damage. Ensure
workpieces that do not have large/loose
knots.
• Excessive Warping: Workpieces with exces-
sive cupping, bowing, or twisting are danger-
ous to cut because they are unstable and
often unpredictable when being cut. DO NOT
use workpieces with these characteristics!
• DO NOT joint or surface plane against
grain direction.
Cutting against the grain
increases likelihood of stock kickback, as well
as tear-out on workpiece.
• Jointing and surface planing with grain
produces better finish and is safer for
operator.
Cutting with the grain is described
as feeding stock so grain points down and
toward you on jointer (see Figure 22) or
away from you on planer (see Figure 23), as
viewed from edge.
Note:
If grain changes direction along edge
of board, decrease cutting depth and make
additional passes.
Summary of Contents for G0634X
Page 68: ......
