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W1755 6" Parallelogram Jointer
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 opera
-
tor. 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
(Figure 29).
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 cut
-
ting results.
• Make sure your workpiece exceeds the minimum
dimension requirements (Figures
30 & 31) before
edge jointing or surface planing, or it may
break
or kick back during the operation!
Figure 29. Correct setting for grain
alignment.
1
⁄2" Min.
1" Min.
12" Min.
Figure 30. Minimum dimensions for edge
jointing.
1
⁄2" Min.
1" Min.
12" Min.
Figure 31. Minimum dimensions for
surface planing.