-20-
Model W1829 (Mfg. Since 9/11)
OPERATIONS
Stock Inspection & Requirements
Here are some rules to follow when choosing and
jointing stock:
• DO NOT joint or surface plane stock that contains
loose knots. Injury to the operator or damage to the
workpiece can occur if the knots become dislodged
during the cutting operation.
• DO NOT joint or surface plane against the grain
direction. Cutting against the grain increases the
likelihood of stock kickback, as well as tear-out on
the workpiece.
• Jointing and surface planing with the grain pro-
duces a better finish and is safer for the operator.
Cutting with the grain is described as feeding the
stock on the jointer so the grain points down and
toward you as viewed on the edge of the stock (see
Figure 23).
Note: If the grain changes direction along the edge
of the board, decrease the cutting depth and make
additional passes.
• Remove foreign objects from the stock. Make sure
that any stock you process with the jointer is clean
and free of any dirt, nails, staples, tiny rocks or any
other foreign objects that may damage the jointer
blades.
• Only process natural wood fiber through your
jointer. Never joint MDF, particle board, plywood,
laminates or other synthetically made materials.
• Make sure all stock is sufficiently dried before
jointing. Wood with a moisture content over 20%
will cause unnecessary wear on the knives and poor
cutting results.
• DO NOT joint stock that is excessively warped or
twisted.
• Make sure your workpiece exceeds the minimum
dimension requirements (see Figures 24–25)
before edge jointing or surface planing, or it may
break or kick back during the operation!
Figure 23. Correct setting for grain
alignment.
With Grain
Against Grain

CORRECT

INCORRECT

FEED DIRECTION
FEED DIRECTION
ROTATION
ROTATION
INFEED TABLE
OUTFEED TABLE
INFEED TABLE
OUTFEED TABLE
1⁄2" Min.
1" Min.
10" Min.
Figure 24. Minimum dimensions for edge
jointing.
1⁄2" Min.
1" Min.
10" Min.
Figure 25. Minimum dimensions for
surface planing.