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ing
operations.
For
extreme accuracy
the
pro-
tractor head should be
set
in relation to
the
sand-
ilg
disc or belt table each time a new position
is
desired.
OPERATION
The
sanding
belt and sanding
disc
furnished
with
this
tool
are
for
general
use. They
are
suitable
for
use on
materials
such
as
metal,
wood, or
plastics.
Since
a
non-hardening
type of disc
cement-[.as
been used
to
fasten
the
abrasive
paper
to
the spnding
plate, the
abrasive disc
may
be
quickly
replaced
with
one
of a different grit.
Drum
sanding
may be done
at
either end
of
the
sanding
belt table.
See
Fig. 4 for a typical
applica-
tion.
Flexible belt sanding may be done on the back of
the belt with the belt table
in
vertical position,
&s
shown
in Fig.
5.
Release
the
belt
tension
to
suit
the
curve
of
the
work
piece.
Quality of finish d.pends entirely upon the
abra-
sive
grit
and the handling
of
the
work.
Highest
qual-
ity
is
obtained
by first rough
sanding
with
the coarser
gri_ts,
then changing
to finer
grits and making
several
light
passes.
Abrasives are available
in
three
grits-fine,
rrr€-
dium and coarse. The belt and disc furnished
are
both medium grit.
FIGURE
5
SAFETY
Due
to
the functions
of
this tool the revolving
parts
must remain exposed. Be
careful
! Hold
the work
firmly
so
that
it
may not be driven from your
hands
allowing them
to
come
in
contact
with
the
abrasive
surfaces.
Use
the
belt
fence
whenever
possible.
Be
sure
the
rotation
is
correct.
Do
not wear
clothes
which
are loose
or dangling.
Be
sure
all
necessary
adjustments have
been made
before
operati.g
tool.
In
installations
requiri.g a belt
guard
see
Fig.
6
for further information.
FIGURE
3
Surface sanding
is best
accomplished
by
holding
the work piece firmly,
but not ipplying too *.r.f,
pressure
to
the sanding
surface.
The work piece should be moved back and forth
over the sanding
belt to maintain
even
belt
\
rear and
eliminate
groovirg.
Wood should be
sanded
with
the
grain.
Use the
belt table
fence, see
Fig.
l,
to back
rp
the
'work: If
the work piece is
lorg"i
than the
b.li
sur-
.,fice, remove the
f.rr..
to allowJull
use
of the belt.
Exra
long work should be supported
as
shown in
Fig. 3, to eliminate
sag.
Disc sanding
has
rough
ends
of wood.
FIGURE
4
its
greatest
usage
in
truing
the
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