Operating Speeds - Dremel 4200 Operating/Safety Instructions Manual

DM 2610029872 01-13_DM 2610029872 01-13.qxp 1/7/13 10:43 AM Page 11
For best control in close work, grip the Rotary
Tool like a pencil between your thumb and
forefinger (Figure 6).
FIG. 6
The "Golf Grip" method of holding the tool is
used for more aggressive operations such as
grinding a flat surface or using cutoff wheels
(Figure 7).
FIG. 7
Questions or Problems? Call 1-800-437-3635
To select the right speed for each job, use a
practice piece of material.
NOTE: Speed is affected by voltage
changes. A reduced incoming voltage will
slow the RPM of the tool.
SLIDE "ON/OFF" SWITCH
The tool is switched "ON" by the slide switch
located on the topside of the motor housing.
TO TURN THE TOOL "ON", slide the switch
button forward.
TO TURN THE TOOL "OFF", slide the switch
button backward.
HIGH PERFORMANCE MOTOR
Your tool is equipped with a high performance
rotary tool motor. This motor expands the
versatility of the rotary tool by driving additional
attachments such as the Dremel Mini-Saw and
Dremel Right Angle.
or check our website at www.Dremel.com

Operating Speeds

Practice on scrap materials first to see how the
Rotary Tool's high speed action performs. Keep
in mind that the work is done by the speed of
the tool and by the accessory in the collet. You
should not lean on or push the tool during use.
Instead, lower the spinning accessory lightly to
the work and allow it to touch the point at which
you want cutting (or sanding or etching, etc.) to
begin. Concentrate on guiding the tool over the
work using very little pressure from your hand.
Allow the accessory to do the work.
Usually, it is best to make a series of passes
with the tool rather than attempt to do all the
work in one pass. To make a cut, for example,
pass the tool back and forth over the work,
much as you would a small paint brush. Cut a
little material on each pass until you reach the
desired depth. For most work, the gentle touch
is best. With it, you have the best control, are
less likely to make errors, and will get the
most efficient work out of the accessory.
The hanger is provided for the use of hanging
your tool while using the flex-shaft or for
storage. If you do not use the hanger, snap it
back into place so it will be out of the way while
the tool is in use.
ELECTRONIC FEEDBACK
Your tool is equipped with an internal electronic
feedback system that provides a "soft start",
which will reduce the stresses that occur from
a high torque start. The system also helps to
keep the preselected speed virtually constant
between no-load and load conditions.
VARIABLE SPEED DIAL
Your tool is equipped with a variable speed
dial. The speed may be adjusted during
operation by presetting the dial on or
between any one of the settings.
You can refer to the charts on page 21, 22,
23 and 24 to determine the proper speed,
based on the material being worked and the
type of accessory being used. These charts
enable you to select both the correct acces-
sory and the optimum speed at a glance.
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