Operation - Jet JJ-6CSDX Operating Instructions And Parts Manual

10.0 Operation

Important: Before operating the jointer, make
sure all knives or knife inserts are seated
and secure in the cutterhead.
If you are inexperienced at jointing, use scrap
pieces of lumber to check settings and get the
feel of operations before attempting regular
work.
Stabilize long workpieces by using an assistant,
or roller stands set level with the outfeed or
infeed table surface.
The fence should be adjusted to create
minimum exposure to the cutterhead during the
jointing operation.
Check the following before operating the jointer:
Outfeed table must be set level with the high

point of the knives or knife inserts.
Fence adjusted for minimum exposure of

cutterhead, and locked at desired angle.
The cutterhead guard must be in place and

operating properly (except when rabbeting).
Infeed table set for desired depth of cut.

Stand away from the cutterhead and turn the

machine on for a few moments. Listen for
any odd noises, rubbings, vibrations, etc.
Correct such problems before attempting
operations on the jointer.
Carefully check your workpiece for knots,

holes, staples or any foreign material that
might damage knives or pose a risk of
kickback. Also check the workpiece for grain
orientation.
10.1 Hand placement
Never pass hands directly
over the cutterhead.
At the start of the cut, the left hand holds the
workpiece firmly against the infeed table and
fence while the right hand pushes the workpiece
in a smooth, even motion toward the cutterhead
(Figure 10-1). After the cut is under way, the
new surface rests firmly on the outfeed table.
The left hand is transferred to the outfeed side
and presses down on this part of the workpiece,
at the same time maintaining flat contact with
the fence. The right hand presses the workpiece
forward and before the right hand reaches the
cutterhead it should be moved to the work on
the outfeed table.
10.2 Surfacing
Always use a hold down or
push block when surfacing stock.
Surfacing, or jointing the face of stock, is shown
in Figure 10-2. Adjust the infeed table for depth
of cut. Cuts of approximately 1/16" at a time are
recommended, as this allows better control over
the material being surfaced. More passes can
then be made to reach the desired depth.
10.3 Edge jointing
Edge Jointing (Figure 10-3) is the most common
operation for the jointer. Set fence square with
the table. Depth of cut should be the minimum
required to obtain a straight edge. Do not make
cuts deeper than 1/8" in a single pass. Hold the
best face of the workpiece firmly against the
fence throughout the feed.
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Figure 10-1
Figure 10-2