Changing Accessories; Operating Speeds - Dremel 300 Series Original Instructions Manual

ASSEMBLY
ALWAYS UNPLUG MULTITOOL BEFORE CHANGING ACCESSORIES,
CHANGING COLLETS, OR SERVICING THE TOOL.
GENERAL
The Dremel multitool is a high quality precision tool that can be
used to perform detailed and intricate tasks. The wide range of
Dremel accessories and attachments allow you to perform a large
variety of tasks. These include tasks such as sanding, carving and
engraving and routing, cutting, cleaning and polishing. PICTURE 2
PICTURE 1
A. Collet nut
B. Collet
C. Housing cap
D. Attachment interface
E. Shaft Lock Button
F. On/Off Switch and Variable Speed Dial
G. Brush cover (one each side)
H. Ventilation openings
I. Hanger
J. Collet Wrench
K. Power cord
COLLETS
The Dremel accessories available for the multitool come
with various shank sizes. Four size collets are available to
accommodate the different shank sizes. Collet sizes are identifi ed
by the rings on the back of the collet.
PICTURE 3
L. 3.2 mm Collet without ring (480)
M. 2.4 mm Collet with three rings (481)
N. 1.6 mm Collet with two rings (482)
O. 0.8 mm Collet with one ring (483)
NOTE: Some multitool kits may not include all four collet sizes.
Collets are available separately.
Always use the collet which matches the shank size of the accessory
you plan to use. Do not force a larger diameter shank into a smaller
collet.
CHANGING COLLETS
PICTURE 4
P. Shaft Lock Button
Q. Collet Wrench
R. To tighten
S. To loosen
T. Collet Nut
1. Press the shaft lock button, hold down and rotate the shaft
by hand until it engages the shaft. Do not engage the shaft
lock button while multitool is running.
2. With the shaft lock button engaged, loosen and remove the
collet nut. Use the collet wrench if necessary.
3. Remove the collet by pulling it free from the shaft.
4. Install the appropriate size collet fully into the shaft and
reinstall the collet nut fi nger tight. Do not fully tighten the
nut when there is no bit or accessory installed.

CHANGING ACCESSORIES

PICTURE 5/6
U. Shaft Lock Button
1. Press the shaft lock button and rotate the shaft by hand
until it engages the shaft lock. Do not engage the shaft lock
button while multitool is running.
2. With the shaft lock button engaged, loosen (do not remove)
the collet nut. Use the collet wrench if necessary.
3. Insert the bit or accessory shank fully into the collet.
4. With the shaft lock button engaged, fi nger tighten the collet
nut until the bit or accessory shank is gripped by the collet.
NOTE: Be sure to read the instructions supplied with your
Dremel accessory for further information on its use.
Use only Dremel tested, high performance accessories.
GETTING STARTED
The fi rst step in using the multitool is to get the "feel" of it. Hold
it in your hand and feel its weight and balance. Feel the taper
of the housing. This taper permits the tool to be grasped much
like a pen or pencil. The unique softgrip on the nose allows for
added comfort and control during use.
Always hold the tool away from your face. Accessories can be
damaged during handling and can fly apart as they come up to
speed.
When holding tool, do not cover the ventilation openings with your
hand. Blocking the ventilation openings could cause the motor to
overheat.
IMPORTANT! Practice on scrap material fi rst to see how the tool's
high-speed action performs. Keep in mind that your multitool
will perform best by allowing the speed, along with the correct
Dremel accessory and attachment, to do the work for you. Do not
put pressure on the tool during use, if possible. Instead, lower the
spinning accessory lightly to the work surface and allow it to touch
the point at which you want 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 better to make a series of passes with the tool
rather than to do the entire job with one pass. A gentle touch
gives the best control and reduces the chance of error.
For best control in close work, grip the multitool like a pencil
between your thumb and forefi nger. PICTURE 7
The "golf" grip method is used for heavier operations such as
grinding or cutting. PICTURE 8

OPERATING SPEEDS

This tool is a high speed multitool. Its speeds vary from 10.000
to 33.000 RPM. Adjusting the no. of RPM to your project will give
19
USE