Accessories - DeWalt DW441 Guide D'utilisation

tight bond. If you remove the paper soon after you are finished sand-
ing you don't allow the adhesive to set. If you leave it on for a couple
of days the adhesive sets and has more strength than the paper car-
rier, causing the paper to tear and leaving you with a difficult clean up
job. One more disadvantage: If you do small sanding jobs and don't
wear out the paper you cannot reuse it and tend to waste more paper.
SANDING
THE BASIC RULES: Which ones to break and which ones not to.
Always start with the coarsest grit first. Don't break this rule. The
scratches get smaller as the grit number gets larger and the quality of
the finish generally improves. When you change grits be particular
about cleaning the surface that you are finishing. An 80 grit particle
floating on your work under your 220 grit paper will leave 80 grit
scratches. The best way to avoid this is to vacuum the work and then
carefully wipe down the work with a tack rag.
The random orbit sander action is equally applied across the grain and
with the grain. Since the scratch mark is small and random in all direc-
tions, the ability of the eye to see a scratch is greatly reduced.
Always wear a mask to avoid breathing the dust. NEVER BREAK
THIS RULE. We have engineered the tool to collect a majority of the
dust created in the sanding process but the tool does not capture it all.
To improve the capture rate use a vacuum but ALWAYS wear a dust
mask.
SOME OTHER HINTS FOR A BETTER FINISH
A random orbit sander is much more aggressive than other similarly
sized orbital tools so you may want to consider the next finer grit when
you start to sand your project.
Since the random orbit action makes a short scratch, you may find that
a project doesn't require as many grit steps. A lot of professional cab-
inet makers only use 80, 120, and 150 grit on their work with satisfac-
tory results. If in doubt about how the finish will take to your sanded
surface, wipe the surface with some paint thinner. Defects will show
up darker than the surrounding wood.
Careful inspection of the work prior to the finishing operation may
reveal dents. Try to correct these problems by raising the dent (a
hot iron and wet rag will do this) or carefully sand a large area
around the dent. If you vigorously sand the dent, you may create a
cupped surface.
When you are satisfied with the sanding job and you have finished
sanding with your finest grit, raise the grain by dampening the wood
with a wet rag. When the wood has dried and you are ready to apply
the finish, resand lightly to take off the wood fibers raised by the water.
Vac and tack the surfaces and immediately apply the first coat of fin-
ish before the wood gets dirty.
WOOD: Some important characteristics of wood
Hard grain and soft grain
Wood has hard grain and soft grain. Hard grain is typically the prod-
uct of summer growth and soft grain the product of spring. All sanders
will remove more soft grain than hard grain and since the random
orbit sander is more aggressive, it will remove it that much more
quickly. Extended sanding on a piece of fir for example, will produce
a noticeably uneven finish. This is a good reason to correct flaws
before sanding.

Accessories

Recommended accessories for use with your tool are available at
extra cost from your local dealer or authorized service center. If you
need assistance in locating any accessory for your tool, please con-
tact D WALT Industrial Tool Co., 701 East Joppa Road, Baltimore, MD
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21286, call 1-800-4-D WALT (1-800-433-9258) or visit our website
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www.dewalt.com.
CAUTION: The use of any other accessory not recommended for
use with this tool could be hazardous.
Three Year Limited Warranty
D WALT will repair, without charge, any defects due to faulty materi-
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als or workmanship for three years from the date of purchase. This
warranty does not cover part failure due to normal wear or tool abuse.
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