OPERATIONS
-26-
Adjusting Platen
The adjustable platen allows you to achieve dif-
ferent results from your sander, depending on
how it is positioned. To move the platen up or
down, use the knob shown in
Figure 32
and
gauge the depth/height by using the scale on
the knob.
The three possible platen positions
are as follows:
Platen Up
— The platen is moved above the
sanding rollers. The rollers then act like a drum
sander and allow for increased stock removal. In
this position, the ideal belt grit is #100 or coars-
er. The scratch pattern in this mode will be
short and deep, relative to grit size.
Platen Even
— The platen is set even with the
sanding rollers. The rollers act together with the
platen pressure to achieve intermediate or final
finishing. In this position, the ideal belt grit is
between #100 and #180. The scratch pattern in
this position is moderate, relative to grit size.
Platen Down
— The platen is moved below the
sanding rollers. With the platen down, the work-
piece contact with the sandpaper is only made
at the platen. This position is used for fine fin-
ishing, sanding repairs, or sanding lacquer. The
ideal belt grit is #180 or finer. Generally sanding
with the platen down will remove .004" or less.
The scratch pattern in this position will be long
and shallow, relative to grit size.
Figure 32.
Platen depth knob.
The platen depth should never be more
than .2mm below the sanding belt rollers or
sanding belt damage/stretching may occur.
This depth can be determined by watching
the scale on the platen knob. (.2mm is the
equivalent of one full turn of the knob.)
NOTICE
3.
Feed the workpiece as shown in
Figure 31
.
4.
Adjust the table height while watching the
load meter—
remember not to exceed 26
amps!
5.
When you achieve a good cut, lock the table
in place and pass the workpiece through the
sander again.
Figure 31.
Operator feeding workpiece in
correct position.
