Dremel 4200 Operating/Safety Instructions Manual page 17

DM 2610029872 01-13_DM 2610029872 01-13.qxp 1/7/13 10:43 AM Page 17
Wire Brushes
Three different shapes of wire brushes are
available. For best results wire brushes
should be used at speeds not greater than
15,000 RPM. Refer to Operating Speeds
section for proper tool speed setting. The
three shapes come in three different materials:
stainless steel, brass and carbon wire. The
stainless steel perform well on pewter,
aluminum, stainless steel, and other metals,
without leaving "after-rust". Brass brushes are
non sparking, and softer than steel; making
them good for use on soft metal like gold,
cooper and brass. The carbon wire brushes
are good for general purpose cleaning.
Bristle Brushes
These are excellent cleaning tools on
silverware, jewelry and antiques. The three
shapes make it possible to get into tight
corners and other difficult places. Bristle
brushes can be used with polishing compound
for faster cleaning or polishing.
Brushing Pressure
1. Remember, the tips of a wire brush do the
work. Operate the brush with the lightest
pressure so only the tips of the wire come in
contact with the work.
2. If heavier pressures are used, the wires will
be overstressed, resulting in a wiping action;
and if this is continued, the life of the brush will
be shortened due to wire fatigue.
INCORRECT:
Excessive pressure can cause wire breakage.
Dremel Accessories (Cont.)
3. Apply the brush to the work in such a way
that as much of the brush face as possible is in
full contact with the work. Applying the side or
edge of the brush to the work will result in wire
breakage and shortened brush life.
These include an impregnated polishing point
and an impregnated polishing wheel for
bringing metal surfaces to smooth finish; a felt
polishing tip and felt polishing wheel, and cloth
polishing wheel, all used for polishing plastics,
metals, jewelry and small parts. Also included
in this group is a polishing compound (No. 421)
for use with the felt and cloth polishers.
Polishing points make a very smooth surface,
but a high luster is obtained using felt or cloth
wheels and polishing compound. For best
results polishing accessories should be
used at speeds not greater than 15,000
RPM.
No polishing compound is needed when using
the 425 Polishing Wheel.
Use to remove paint, deburr metal, polish
stainless steel and other metals. Available in
medium grit. 1/8" shank.
17
CORRECT:
Wire tips doing the work.
Polishing Accessories
Aluminum Oxide Abrasive Wheels