Dremel 7750 Traduction De La Notice Originale page 19

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.
EZ TWIST™ INTEGRATED WRENCH/NOSE CAP
PICTURE 4
A. EZ Twist integrated wrench/nose cap
B. Shaft lock button
C. Collet nut
D. To loosen
E. To tighten
The nose cap of your tool has an integrated wrench
allowing you to loosen and tighten the collet nut without the
use of the standard collet wrench.
1. Unscrew the nose cap from the tool, line-up the steel
insert on inside of the cap with the collet nut.
2. With the shaft lock engaged twist nose cap counter
clockwise to loosen the collet nut. Do not engage the
shaft lock button while multitool is running.
3. Insert the bit or accessory shank fully into the collet.
4. With the shaft lock engaged twist nose cap clockwise
to tighten the collet nut.
5. Screw the nose cap back into its original position.
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.
BALANCING ACCESSORIES
For precision work, it is important that all accessories
be in good balance (much the same as the tires on
your automobile). To true up or balance an accessory,
slightly loosen collet nut and give the accessory or collet
a 1/4 turn. Re tighten collet nut and run the Rotary Tool.
You should be able to tell by the sound and feel if your
accessory is running in balance. Continue adjusting in this
fashion until best balance is achieved.
GETTING STARTED
The first 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.
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 first 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
USE
rather than to do the entire job with one pass. A gentle touch
gives the best control and reduces the chance of error.
HOLDING THE TOOL
For best control in close work, grip the multitool like a
pencil between your thumb and forefinger. PICTURE 6
The "golf" grip method is used for heavier operations such
as grinding or cutting. PICTURE 7
OPERATING SPEEDS
PICTURE 8
A. On/Off/ 3 Speed switch
To select the right speed for each job, use a practice piece
of material.
The tool is switched "ON" by the slide switch located on
the top side of the motor housing.
TO TURN THE TOOL "ON", slide the switch button
to the right, to position 1, 2 or 3.
TO TURN THE TOOL "OFF", slide the switch button
to the left, to position "0".
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 Dremel attachments.
FOUR POSITION SLIDE SWITCH
Your tool is equipped with a four position switch. The
speed may be adjusted during operation by sliding the
switch left or right between any one of the settings.
Settings for Approximate Revolutions
Switch Setting
0
1
2
3
Refer to the Speed Settings chart on pages 10-11 to help
determine the proper speed for the material being worked
on and the accessory to use.
Most jobs can be accomplished using the tool at the
highest setting. However, certain materials (some plastics
and metals) can be damaged by high-speed generated
heat and should be worked on at relatively low speeds.
Low speed operation (15000 min–1 or less) is usually
best for polishing operations employing the felt polishing
accessories. All brushing applications require lower
speeds to avoid wire discharge from the holder. Let
the performance of the tool do the work for you when
using lower speed settings. Higher speeds are better for
hardwoods, metals and glass and for drilling, carving,
cutting, routing and shaping.
Some guidelines regarding tool speed:
• Plastic and other materials that melt at low
temperatures should be cut at low speeds.
• Polishing, buffing and cleaning with a wire brush must
be done at speeds no greater than 15000 min–1 to
prevent damage to the brush and your material.
• Wood should be cut at high speed.
• Iron or steel should be cut at high speed.
19
Speed Range
OFF
8000 RPM
14000 RPM
20,000 RPM