-29-
Model W1745W (For Machines Mfd. Since 9/16)
O
PE
R
ATI
O
NS
Stock Inspection
& Requirements
Here are some rules to follow when choosing and
jointing stock:
•
DO NOT joint or surface plane stock that contains
large or loose knots.
Injury to the operator or dam-
age 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 35
).
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, or create a fire hazard if drawn into dust
collector. Wood stacked on a concrete floor may
contain small pieces of stone or concrete and should
be removed before jointing.
•
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.
• Ensure workpiece meets or exceeds the minimum
dimension requirements (Figures 36–37),
before
edge jointing or surface planing or it may break or
kick back during operation!
Figure 35.
Correct and incorrect setting
grain alignment with cutterhead.
With Grain
Against Grain
CORRECT
INCORRECT
FEED DIRECTION
FEED DIRECTION
ROTATION
ROTATION
INFEED TABLE
OUTFEED TABLE
INFEED TABLE
OUTFEED TABLE
1
⁄
4
" Min.
1" Min.
10" Min.
1
⁄
2
" Min.
10" Min.
Figure 36.
Minimum dimensions for edge
jointing.
Figure 37.
Minimum dimensions for
surface planing.
3
⁄
4
" Min.
