BM 1609929A20 3/03 3/12/03 10:35 AM Page 9
MOTOR HOUSING RELEASE LEVER
(1754 ONLY)
Your tool is equipped with a motor housing
release lever that will allow you to rotate the
spindle in either direction 90u. To use this
feature, pull release lever in direction of
arrow to release housing, and rotate housing
until it clicks into place.
Sanding Operations
SELECTING SANDING DISCGuide the Disc Sander with crosswise
Sanding discs are made of extremely hardstrokes. Be careful not to hold the sander in
and sharp aluminum oxide grits, phenol-one spot too long. Do not use a circular
resin bonded to a sturdy fiber backing formotion, as this makes swirl marks. Test
fast heavy-duty service and long life. Thebefore use on scrap stock.
discs vary as to size and spacing of the
abrasive grits. OPEN COAT (type H) N usedDo not force or apply pressure when
sanding. Use only the weight of the tool for
for soft materials and on paint or varnish.pressure. Excess pressure actually slows the
CLOSED COAT (type K) Nused for metal,
tool down. If faster stock removal is desired,
hardwood, stone, marble and otherchange to a coarser grit disc.
materials.
Remove gummy paint from metal with an
Sanding discs range in grit from 16 (very
Oopen coat� disc. Sand until sparks start to
coarse) to 180 (very fine). To obtain bestappear, then stop and change to a Oclosed
results, select sanding discs carefully. Many
coat� disc to remove any remaining paint.
jobs require the use of several grit sizes and
at times both Oopen coat and closed coat�SANDING WOOD
discs are required to get the job done faster.When sanding wood the direction of the disc
See chart for application examples.motion at the contact point should parallel
the grain as much as possible. The rapid cut
Operation: Refinishing painted wood or metal surfaces.
of discs and the swirl type scratch pattern
REMARKSGRITthey occasionally create generally prohibit
To remove paint and to smoothCoarsetheir use for producing the final finish.
surface irregularities. 16-24-30
Scratches and circular marks are usually the
To smoothMediumresult of using too coarse a grit. When
the rough sanding. 36-50-80
changing to a finer grit, move across the
To remove scratches left by Finesanding lines that were made by a previous
previous discs. 100-120
To smooth surfaces for painting, Very Finecoarser disc.
polishing or waxing. 150-180SANDING METAL
When sanding automobiles or appliances,
SANDING TIPS
wipe the metal clean with a non-flammable
For best results, tilt the Disc Sander at a 10!solvent or commercial cleaner to remove all
to 15! angle while sanding so that only about
1" of the surface around the edge of the discwax and grease. By doing this first, the
sanding discs will sand better and last
contacts the work.
longer.
If the disc (accessory) is held flat or the backFor heavy duty work, use a coarse grit disc
edge of the disc comes in contact with the
first. Follow-up with a medium grit to remove
work, a violent thrust to the side may result.scratches. To produce smooth finish, use
If sander is tilted too much, sanding actionfine grit disc.
will be too great and a rough cut surface or
gouging and snagging will result.
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ACEC
BOSCH
