Maximum Performance Tips; User-Maintenance - Jet JWDS-1632-M Gebrauchsanleitung

problems occur, first check and adjust the feed rate,
referring to the "Troubleshooting" section in this
manual.

9.6 Maximum performance tips

The versatility designed into the JWDS-1632-M drum
sander allows it to be used for a variety of tasks that
will boost return on your investment. For example, it
will speed up fine sanding work often done with
slower, dust-generating hand sanders, and will achieve
fine thickness adjustments not possible on some
sanders. It can be used to surface figured woods –
bird's eye or curly maple, for example – which can be
damaged if fed through a planer.
Learning how to use its adjustments and controls will
allow you to fine-tune the machine for maximum
results. The best results come from experimenting
with different abrasive grits and machine adjustments
to fit the job at hand. Following is a list of useful tips
which can help you improve performance of your
sander.
9.6.1 Dust collection
When connecting dust collectors, remember that
straight pipe will not restrict airflow as much as flexible
tubing. Y's and elbows will restrict airflow less than T's.
Also, a hose smaller than 80mm diameter should not
be used.
9.6.2 Multiple-piece sanding runs
When abrasive planing (or thickness sanding) a run of
similar pieces that you want to have the same
thickness, it is best to determine the thickness of the
thinnest piece and process all pieces to that same
thickness in one session. Be aware that the sander will
remove cups and crowns in the workpiece; consider
this when measuring and processing stock to the same
thickness.
9.6.3 Simultaneous multiple pieces
When sanding multiple pieces simultaneously, make
sure to stagger (step) the pieces across the width of
the conveyor belt. This provides better contact with
the tension rollers. Try to process only multiple pieces
of similar thickness.
If there is a significant thickness difference, the thinner
pieces can slip on the conveyor belt if they do not
contact the tension rollers. Also note that pieces
thicker than 20mm should be longer than the
minimum normally recommended to prevent tipping
of the stock.
9.6.4 Edge sanding
When edge sanding, the sander will mimic the
opposite edge of the stock which is lying on the
conveyor belt. Because of this, it is important for the
stock edge to have been ripped at the proper angle to
the face before the sanding process. When edge
sanding stock that is less than 20mm wide or more
than 50mm high, it is good procedure to stack and
clamp several pieces together to prevent them from
slipping or tipping on the conveyor belt.
9.6.5 Sanding imperfect stock
When sanding stock with a cup or crown, place the
crown up. This will stabilize the stock to help prevent
tipping or rocking during sanding. After the crown has
been removed and the top is flat, turn the stock over
and sand the opposite side. To avoid personal injury,
take special care when sanding stock that is twisted,
bowed, or otherwise varies in thickness from end to
end. If possible, support such stock as it is being
sanded to keep it from slipping or tipping. Use extra
roller stands, help from another person, or hand
pressure on the stock, to minimize potentially
hazardous situations.
9.6.6 Face frames and raised panel doors
It is very important to have the proper abrasive
contact when doing this type of sanding. If the
machine is set to take an excessive depth of cut, the
result can be a gouge or dip as the drum goes from
sanding the rails at full width to sanding just a small
width on the stiles. To prevent this make sure, when
using abrasives finer than 80 grit, that the drum is in
contact with the wood but can still be spun by hand. If
there is room, angling the stock on the conveyor belt
can also help. Slowing the conveyor feed when coming
to a rail in the stock can help prevent a dip or gouge.
This allows the abrasive to work the wider width with
less effort, and to achieve better consistency of the
finished surface.
9.6.7 Stock feeding angle
Some pieces, because of their dimensions, will need to
be fed into the machine at a 90° angle (perpendicular
to drum). However, even a slight offset angle of stock
will provide for more effective stock removal. The
optimum feeding angle for stock removal is about 60°.
Angling the workpiece for stock removal provides
other advantages, such as less loading of certain areas
of the drum due to glue lines or mineral streaks in the
stock, more even wear of abrasive strips, potentially
faster feed rates, and lighter loads on the motor. Note
that to get the best final finish, however, the stock
should be fed through the machine so it will be sanded
in line with the grain of the wood on the final one or
two passes.

10.0 User-maintenance

machine, disconnect it from the electrical supply (pull
out the plug), unless indicated otherwise. Failure to
comply may cause serious injury.
15
Before doing maintenance on the