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Sanding Operations
SELECTING SANDING DISCat times both Oopen coat and closed coat�
Sanding discs are made of extremely harddiscs are required to get the job done faster.
and sharp aluminum oxide grits, phenol-resinSee chart for application examples.
bonded to a sturdy fiber backing for fastOperation: Refinishing painted wood or metal surfaces.
heavy-duty service and long life. The discs
REMARKSGRIT
vary as to size and spacing of the abrasive
type HTo remove paint and to smoothCoarse
materials and on paint or varnish. CLOSEDsurface irregularities. 16-24-30
type KTo smoothMedium
stone, marble and other materials.the rough sanding. 36-50-80
Sanding discs range in grit from 16 (veryTo remove scratches left by Fine
coarse) to 180 (very fine). To obtain bestprevious discs. 100-120
results, select sanding discs carefully. ManyTo smooth surfaces for painting, Very Fine
jobs require the use of several grit sizes andpolishing or waxing. 150-180
SANDING TIPSappear, then stop and change to a Oclosed
For best results, tilt the Disc Sander at a 10!coat� disc to remove any remaining paint.
to 15! angle while sanding so that only aboutSANDING WOOD
1" of the surface around the edge of the disc
When sanding wood the direction of the disc
contacts the work.motion at the contact point should parallel the
accessorygrain as much as possible. The rapid cut of!WARNING
flat or the back edge of thediscs and the swirl type scratch pattern they
disc comes in contact with the work, a violentoccasionally create generally prohibit their
thrust to the side may result.use for producing the final finish.
If sander is tilted too much, sanding actionScratches and circular marks are usually the
will be too great and a rough cut surface orresult of using too coarse a grit. When
gouging and snagging will result.changing to a finer grit, move across the
Guide the Disc Sander with crosswisesanding lines that were made by a previous
strokes. Be careful not to hold the sander incoarser disc.
one spot too long. Do not use a circular
motion, as this makes swirl marks. TestSANDING METAL
When sanding automobiles or appliances,
before use on scrap stock.wipe the metal clean with a non-flammable
Do not force or apply pressure whensolvent or commercial cleaner to remove all
sanding. Use only the weight of the tool forwax and grease. By doing this first, the
pressure. Excess pressure actually slows thesanding discs will sand better and last longer.
tool down. If faster stock removal is desired,
For heavy duty work, use a coarse grit disc
change to a coarser grit disc.first. Follow-up with a medium grit to remove
Remove gummy paint from metal with anscratches. To produce smooth finish, use fine
Oopen coat� disc. Sand until sparks start togrit disc.
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ACEC
BOSCH
