Craftsman 320.39598 Operator's Manual page 14

SELECTING THE CORRECT GRIT OF SANDPAPER
Use a coarse grit to sand down rough finishes, medium grit to smooth the work
and fine grit to finish off.
It is best to make a trial run on a scrap piece of material to determine the
optimum grades of sandpaper for a particular job.
SANDPAPER GRIT CHART
Grit Type Example of use
80-100 Coarse Paint removal, rough surface preparation
(e.g., non-planed wood)
120-150 Medium Surface preparation planed wood
180-220 Fine Sanding between coats
SANDING
This detail sander can be used for most sanding operations on materials such
as wood, plastic, metal and painted surfaces. The removal rate and the sanding
pattern are determined by the choice of sandpaper and the work surface.
A sandpaper sheet that has been used for metal should not be used for
other materials.
3.
4.
Always attach the dust bag or a suitable adapter and vacuum when sanding
with the detail sander
WARNING: Do not touch sander vents after prolonged use; the gear box
could be very hot.
1. Wear safety goggles, a dust mask, and hearing protection.
2. Apply uniform sanding pressure to extend the life of the sandpapers.
Intensifying the sanding pressure does not lead to an increase of the sanding
capacity, but instead it increases wear on the machine and the sandpaper.
Use only the tip or an edge of the sandpaper for precise sanding of edges,
corners and hard to reach areas.
When selectively sanding on one spot, the sandpaper can heat up
considerably. Remove the tool from the surface periodically to permit the
sandpaper to cool down.
_, CAUTION: Where possible, clamp smaller workpieces to a workbench.
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