Dremel MM35 Operating/Safety Instructions Manual page 16

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GROUT REMOVAL
Grout removal blades are ideal
for removing damaged or
cracked grout. Grout blades
come in different widths (1/16" and 1/8") to
tackle different grout line widths. Before
selecting a grout blade measure the grout line
width to pick the appropriate blade.
Select a medium to high speed.
To remove the grout, use a back and forth
motion, making several passes along the grout
line. The hardness of the grout will dictate how
many passes are needed. Try and keep the
grout blade aligned with the grout line and be
careful not to apply too much side pressure on
the grout blade during the process. To control
plunge depth use the carbide grit line on the
blade as an indicator. Be careful not to plunge
beyond the carbide grit line to avoid damage to
the backer board material.
The grout blades can handle both sanded and
unsanded grout. If you notice the blade
clogging during the grout removal process, you
can use a brass brush to clean the grit, thus
exposing the grit again.
The grout blade geometry is designed so that
the blade can remove all grout up to the
surface of a wall or corner. This can be
accomplished by ensuring that the segmented
portion of the blade is facing the wall or corner.
SCRAPING
Scrapers are suitable for removing old coats of
varnish or adhesives, removing bonded
carpeting, e.g. on stairs/steps and other
small/medium size surfaces.
Select low to medium speed.
Rigid scrapers are for large area
removal, and harder materials
such as vinyl flooring, carpeting
and tile adhesives. When
removing strong, tacky adhesives, grease the
scraper blade surface with (petroleum jelly
or silicone grease) to reduce gumming up.
The carpet/vinyl flooring removes easier if
it is scored prior to removal so the scraper
blade can move underneath the flooring
material.
Flexible scrapers are used for
hard to reach areas and softer
material such as caulk.
Mount the scraper blade with the logo side
facing up. With the flexible scraper, make sure
that the screw head does not make contact
with surface during the scraping process (a 30
- 45 degree pitch is recommend). This can be
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accomplished by making sure that the tool is at
an angle to the blade. You should be able to
see the blade flex during the scraping process.
If you are removing caulk from a delicate
surface such as a bath tub or tile back splash,
we recommend taping or protecting the
surface that the blade will rest on. Use rubbing
alcohol to clean the surface after the caulk
and/or adhesive is removed.
Turn the tool on and place desired accessory
on the area where material is to be removed.
Begin with light pressure. The oscillating
motion of accessory only occurs when
pressure is applied to the material to be
removed.
Excessive pressure can gouge or damage the
background surfaces (e.g,. wood, plaster).
SANDING
Sanding accessories are suitable
for dry sanding of wood, metal,
surfaces, corners and edges and
hard to reach areas.
Work with the complete surface of the sanding
pad, not only with the tip.
Corners may be finished using the tip or edge
of the selected accessory, which should
occasionally be rotated during use to distribute
the wear on the accessory and backing pad
surface.
Sand with a continuous motion and light
pressure. DO NOT apply excessive pressure -
let the tool do the work. Excessive pressure
will result in poor handling, vibration, and
unwanted sanding marks and premature wear
on the sanding sheet.
Always be certain that smaller workpieces are
securely fastened to a bench or other support.
Larger panels may be held in place by hand on
a bench or sawhorses.
Open-coat aluminum oxide sanding sheets are
recommended for most wood or metal sanding
applications, as this synthetic material cuts
quickly and wears well. Some applications,
such as metal finishing or cleaning, require
special abrasive pads which are available from
your dealer. For best results, use Dremel
sanding accessories which are of superior
quality and are carefully selected to produce
professional quality results with your oscillating
tool.
The following suggestions may be used as a
general guide for abrasive selection, but the
best results will be obtained by sanding a test
sample of the workpiece first.
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