Dremel 2050 User Manual
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Operating/Safety Instructions
Consignes de fonctionnement/sécurité
Instrucciones de funcionamiento y seguridad
1-800-4-DREMEL (1-800-437-3635) www.dremel.com
Call Toll Free for
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& Service Locations
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P.O. Box 081126 Racine, WI 53408-1126
2050
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Work area safety
Keep work area clean and well lit. Cluttered
or dark areas invite accidents.
Do not operate power tools in explosive
atmospheres, such as in the presence of
flammable liquids, gases or dust. Power
tools create sparks which may ignite the dust
or fumes.
Keep children and bystanders away while
operating a power tool. Distractions can
cause you to lose control.
Electrical safety
Power tool plugs must match the outlet.
Never modify the plug in any way. Do not
us e a ny adapt e r plugs wi t h earthed
(grounded) power tools. Unmodified plugs
and matching outlets will reduce risk of electric
shock.
Avoid body contact with earthed or grounded
surfaces such as pipes, radiators, ranges
and refrigerators. There is an increased risk
of electric shock if your body is earthed or
grounded.
Do not expose power tools to rain or wet
conditions. Water entering a power tool will
increase the risk of electric shock.
Do not abuse the cord. Never use the cord
for carrying, pulling or unplugging the power
tool. Keep cord away from heat, oil, sharp
edges or moving parts. Damaged or entangled
cords increase the risk of electric shock.
When operating a power tool outdoors,
use an extension cord suitable for outdoor
use. Use of a cord suitable for outdoor use
reduces the risk of electric shock.
If operating a power tool in a damp location
is unavoidable, use a Ground Fault Circuit
Interrupter (GFCI) protected supply. Use of
an GFCI reduces the risk of electric shock.
Personal safety
Stay alert, watch what you are doing and
us e c o mmon sen se w hen ope r atin g a
power tool. Do not use a power tool while
you are tired or under the influence of drugs,
alcohol or medication. A moment of inattention
while operating power tools may result in
serious personal injury.
Use personal protective equipment. Always
wear eye protection. Protective equipment
such as dust mask, non-skid safety shoes, hard
hat, or hearing protection used for appropriate
conditions will reduce personal injuries.
Read all safety warnings and all instructions. Failure to follow the warnings
and instructions may result in electric shock, fire and/or serious injury.
SAVE ALL WARNINGS AND INSTRUCTIONS FOR FUTURE REFERENCE
The term “power tool” in the warnings refers to your mains-operated (corded) power tool or
battery-operated (cordless) power tool.
General Power Tool Safety Warnings
Safety Symbols
The definitions below describe the level of severity for each signal word. Please read the manual
and pay attention to these symbols.
!
This is the safety alert symbol. It is used to alert you to potential
personal injury hazards. Obey all safety messages that follow this
symbol to avoid possible injury or death.
DANGER indicates a hazardous situation which, if not avoided, will
result in death or serious injury.
WARNING indicates a hazardous situation which, if not avoided, could
result in death or serious injury.
CAUTION, used with the safety alert symbol, indicates a hazardous
situation which, if not avoided, will result in minor or moderate injury.
2610Z09741 12-17 2050.qxp_2050 12/19/17 10:38 AM Page 2
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Prevent unintentional starting. Ensure the
s
wi tch is in the off-p ositi on bef ore
connecting to power source and / or battery
pa ck, pic king up or ca rryi ng the too l.
Carrying power tools with your finger on the
switch or energizing power tools that have the
switch on invites accidents.
Remove any adjusting key or wrench before
turning the power tool on. A wrench or a key
left attached to a rotating part of the power
tool may result in personal injury.
Do not overreach. Keep proper footing and
balance at all times. This enables better
co n trol of the powe r too l in unex p ected
situations.
Dress properly. Do not wear loose clothing
or jewelry. Keep your hair, clothing and
gloves away from moving parts. Loose
clothes, jewelry or long hair can be caught in
moving parts.
If devices are provided for the connection
of dust extraction and collection facilities,
ensure these are connected and properly
used. Use of dust collection can reduce dust-
related hazards.
Power tool use and care
Do not for ce th e pow er to o l. Use the
correct power tool for your application. The
correct power tool will do the job better and
safer at the rate for which it was designed.
Do not use the power tool if the switch does
not turn it on and off. Any power tool that
ca n n o t be control l e d with the swit c h is
dangerous and must be repaired.
Disconnect the plug from the power source
a
nd/or the battery pack from the power tool
before making any adjustments, changing
accessories, or storing power tools. Such
preventive safety measures reduce the risk of
starting the power tool accidentally.
Store idle power tools out of the reach of
children and do not allow persons unfamiliar
with the power tool or these instructions to
operate the power tool. Power tools are
dangerous in the hands of untrained users.
Maintain power tools. Check for misalignment
or binding of moving parts, breakage of
parts and any other condition that may
affect the power tool’s operation. If damaged,
have the power tool repaired before use.
Ma n y a c c i dents are caused by po o r l y
maintained power tools.
Keep cutting tools sharp and clean. Properly
maintained cutting tools with sharp cutting
edges are less likely to bind and are easier to
control.
Use the power tool, accessories and tool
bits etc. in accordance with these instructions,
taking into account the working conditions
and the work to be performed. Use of the
power tool for operations different from those
intended could result in a hazardous situation.
Service
Have your power tool serviced by a qualified
re p a i r p e r s on u s i ng o n ly i d e ntical
replacement parts. This will ensure that the
safety of the power tool is maintained.
Safety warnings common for
grinding, sanding, wire brushing,
polishing, carving or abrasive
cutting-off operations:
This power tool is intended to function as a
gr inde r, san der, wi re br ush, pol ishe r,
carving or cut-of f tool. Read all safety
warnings, instructions, illustrations and
specifications provided with this power
tool. Failure to follow all instructions listed
below may result in electric shock, fire and/or
serious injury.
Do not us e acc ess ories which a re not
specifically designed and recommended by
the tool manufacturer. Just because the
accessory can be attached to your power tool,
it does not assure safe operation.
The RATED SPEE D of the acce ssories
must be at least equal to the operating
speed setting marked on the power tool.
Accessories running faster than their RATED
SPEED can break and fly apart.
The outside diameter and the thickness of
your accessory must be within the capacity
rating of your power tool. Incorrectly sized
accessories cannot be adequately controlled.
The arbor size of wheels, sanding drums or
any other accessory must properly fit the
sp i ndle or col l et o f t h e p o wer tool.
Accessories that do not match the mounting
hardware of the power tool will run out of
balance, vibrate excessively and may cause
loss of control.
Safety Rules for Rotary Tools
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M
andrel mounted wheels, sanding drums,
cutters or other accessories must be fully
inserted into the collet or chuc k. If the
ma ndre l is ins uff icien tly held a nd/or the
overhang of the wheel is too long, the mounted
wheel may become loose and be ejected at
high velocity.
Do not use a damaged accessory. Before
each use inspect the accessory such as
abra sive wheels for chips and cracks,
sanding drum for cracks, tear or excess
wear, wire brush for loose or cracked wires.
If power tool or accessory is dropp ed,
inspect for damage or install an undamaged
accessory. After inspecting and installing
an ac cess o ry, posi tion you rsel f an d
bystanders away from the plane of the
rotating accessory and run the power tool
at maximum no-load speed for one minute.
Damaged accessories will normally break apart
during this test time.
Wear pe rsona l prot ectiv e equi pment .
Depending on application, use face shield,
sa fety goggl es or safety glass es. As
ap prop riat e, wear dus t m ask, he aring
protectors, gloves and workshop apron
capable of stopping sma ll ab ras ive or
workpiece fragments. The eye protection
must be capable of stopping flying debris
generated by various operations. The dust
mask or respirator must be capable of filtrating
pa rtic les gen erat e d b y your oper atio n .
Prolonged exposure to high intensity noise may
cause hearing loss.
Keep bystanders a safe distance away from
work area. Anyone entering the work area
must wear personal protective equipment.
Fr agme nts of wor kpie ce or of a bro ken
accessory may fly away and cause injury
beyond immediate area of operation.
Hold the power tool by insulated gripping
su rfac es onl y, whe n perf ormi ng an
operation where the cutting accessory may
contact hidden wiring or its own cord.
Cutting accessory contacting a “live” wire may
make exposed metal parts of the power tool
“live” and could give the operator an electric
shock.
Always hold the tool firmly in your hand(s)
during the start-up. The reaction torque of the
motor, as it accelerates to full speed, can cause
the tool to twist.
Use clamps to support workpiece whenever
practical. Never hold a small workpiece in
o
ne hand and the tool in the other hand
while in use. Clamping a small workpiece
allows you to use your hand(s) to control the
tool. Round material such as dowel rods, pipes
or tubing have a tendency to roll while being
cut, and may cause the bit to bind or jump
toward you.
Position the cord clear of the spinning
accessory. If you lose control, the cord may be
cut or snagged and your hand or arm may be
pulled into the spinning accessory.
Never lay the power tool down until the
accessory has come to a complete stop.
The spinning accessory may grab the surface
and pull the power tool out of your control.
After chang ing the bits or mak ing any
adjustments, make sure t he collet nut,
chuck or any other adjustment devices are
securely tightened. Loose adjustment devices
can unexpectedly shift, causing loss of control,
loose rotating components will be violently
thrown.
Do not run the power tool while carrying it
at your side. Accidental contact with the
spinning accessory could snag your clothing,
pulling the accessory into your body.
Regularly clean the power tool’s air vents.
The motor’s fan will draw the dust inside the
ho usin g and exce ssiv e acc umul atio n of
powdered metal may cause electrical hazards.
Do n ot o pera te the pow er tool ne ar
flammable materials. Sparks could ignite
these materials.
Do not use accessories that require liquid
coolants. Using water or other liquid coolants
may result in electrocution or shock.
Use only in well-ventilated area. Working in a
safe environment reduces risk of injury.
Allo w for suff icient space, at least 6”,
between your hand and the spinning bit. Do
not reach in the area of the spinning bit. The
proximity of the spinning bit to your hand may
not always be obvious.
Do not touch the bit or collet after use. After
use the bit and collet are too hot to be touched
by bare hands.
Do not alter or misuse tool. Any alteration or
modification is a misuse and may result in
serious personal injury.
This product is not intended for use as a
dental drill, in human or veterinary medical
applications. Serious injury may result.
Safety Rules for Rotary Tools - (cont.)
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Safety Rules for Rotary Tools - (cont.)
Kickback and Related Warnings
K
ickback is a sudden reaction to a pinched or
snagged rotating wheel, backing pad, brush or
any other accessory. Pinching or snagging
causes rapid stalling of the rotating accessory
which in turn causes the uncontrolled power
tool to be forced in the direction opposite of the
accessory’s rotation.
For example, if an abrasive wheel is snagged
or pinched by the workpiece, the edge of the
wheel that is entering into the pinch point can
dig into the surface of the material causing the
wheel to climb out or kickout. The wheel may
either jump toward or away from the operator,
de pend ing on d irect ion of t he wheel’s
movement at the point of pinching. Abrasive
wheels may also break under these conditions.
Kickback is the result of power tool misuse
and/ or in cor rect ope rating procedures or
conditions and can be avoided by taking proper
precautions as given below.
Maintain a firm grip on the power tool and
position your body and arm to allow you to
resist kickback forces. The operator can
control kickback forces, if proper precautions
are taken.
Use special care when working corners,
sh arp edg es etc. Avoi d b ounci ng and
snagging the accessory. Corners, sharp
edges or bouncing have a tendency to snag the
rotating accessory and cause loss of control or
kickback.
Do not attach a toothed saw blade. Such
blades create frequent kickback and loss of
control.
Always feed the bit into the material in the
same direction as the cutting edge is exiting
fr om the mat eria l (which is the sa me
direction as the chips are thrown). Feeding
the tool in the wrong direction causes the
cutting edge of the bit to climb out of the work
and pull the tool in the direction of this feed.
When using rotary files, cut-off wheels,
high-speed cutters or tungsten carbide
cutters, always have the work securely
clamped. The se wheels w ill grab if they
become slightly canted in the groove, and can
kickback. When a cut-off wheel grabs, the
wheel itself usually breaks. When a rotary file,
high-speed cutter or tungsten carbide cutter
grabs, it may jump from the groove and you
could lose control of the tool.
Safety warnings specific for
grinding and abrasive
cutting-off operations:
Us e on ly wheel typ es that are
recommended for your power tool and only
fo r re comm ende d ap plic ation s. F o r
example: do not grind with the side of a cutoff wheel. Abrasive cut-off wheels are intended
for peripheral grinding, side forces applied to
these wheels may cause them to shatter.
For threaded abrasive cones and plugs use
only undamaged wheel mandrels with an
unrelie ved shoulder flange th at ar e of
correct size and length. Proper mandrels will
reduce the possibility of breakage.
Do not ja m a cut- off w heel or apply
excessive pressure. Do not attempt to make
an excessive depth of cut. Overstressing the
wheel increases the loading and susceptibility
to twisting or snagging of the wheel in the cut
an d th e po ssib ility of kickba c k or whe el
breakage.
Do not position your hand in line with and
behind the rotating wheel. When the wheel,
at the point of operation, is moving away from
your hand, the possible kickback may propel
the spinning wheel and the power tool directly
at you.
When wheel is pinched, snagged or when
interrupting a cut for any reason, switch off
the power tool and hold the power tool
motion less until the w heel comes to a
complete stop. Never attempt to remove the
cut-off wheel from the cut while the wheel is
in motion otherwise kickback may occur.
Investigate a nd tak e corrective a ction to
eliminate the cause of wheel pinching or
snagging.
Do not restart the cutting operation in the
workpiece. Let the wheel reach full speed
and carefully re-enter the cut. The wheel may
bind, walk up or kickback if the power tool is
restarted in the workpiece.
Support panels or any oversized workpiece
to minimize the risk of wheel pinching and
kickback. Large workpieces tend to sag under
their own weight. Supports must be placed
under the workpiece near the line of cut and
near the edge of the workpiece on both sides of
the wheel.
Use extra caution when making a pocket
cut into existing walls or other blind areas.
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Additional Safety Warnings
The protruding wheel may cut gas or water
pipes, electrical wiring or objects that can
cause kickback.
Safety warnings specific for wire
brushing operations:
Be aware that wire bristles are thrown by
the brush even during ordinary operation.
Do not overstress the wires by applying
excessive load to the brush. The wire bristles
can easily penetrate light clothing and/or skin.
Allow brushes to run at operating speed for
at least one minute before using them.
During this time no one is to stand in front
or in line with the brush. Loose bristles or
wires will be discharged during the run-in time.
Direct the discharge of the spinning wire
brush away from you. Small particles and tiny
wire fragments may be discharged at high
velocity during the use of these brushes and
may become imbedded in your skin.
Do not use rou t er bit
with the Dremel chuck.
Bit may become a projectile and cause serious
injury.
GFCI and personal protection devices like
electrician’s rubber gloves and footwear will
further enhance your personal safety.
Use only power supply number 2610Z09738
provided with the tool.
Keep handles dry, clean and free from oil
and grease. Slippery hands cannot safely
control the power tool.
Use clamps or other practical way to secure
and supp ort the w orkpiece to a stab le
platform. Holding the work by hand or against
your body is unstable and may lead to loss of
control.
Develop a periodic maintenance schedule
for your tool. When cleaning a tool be
careful not to disassemble any portion of
th e tool si nce int ernal wires ma y be
misplaced or pinched or safety guard return
sp ring s may be impr oper ly mou nted .
Certain cleaning agents such as gasoline,
carb on te trachloride , ammoni a, et c. ma y
damage plastic parts.
Risk of injury to user. The power cord must only
be serviced by a Dremel Service Facility..
Some dust cr eated by
power sanding, sawing,
grinding, drilling, and other construction
activities contains chemicals known to
ca use ca ncer, b i r t h de f ects or ot her
reproductive harm. Some examples of
these chemicals are:
• Lead from lead-based paints,
• Crystalline silica from bricks and cement and
other masonry products, and
• Arsen ic and ch romium from chemically-
treated lumber.
You r risk from t h e s e expos u r e s varie s ,
depending on how often you do this type of
work. To redu ce your ex pos ure to these
chemicals: work in a well ventilated area, and
work with approved safety equipment, such as
those dust masks that are specially designed
to filter out microscopic particles.
Safety Rules for Rotary Tools - (cont.)
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IMPORTANT: Some of the following symbols may be used on your tool. Please study them
and learn their meaning. Proper interpretation of these symbols will allow you to operate the
tool better and safer.
Symbols
Symbol Designation / Explanation
V Volts (voltage)
A Amperes (current)
Hz Hertz (frequency, cycles per second)
W Watt (power)
kg Kilograms (weight)
min Minutes (time)
s Seconds (time)
⌀
Diameter (size of drill bits, grinding wheels, etc.)
n
0
No load speed (rotational speed at no load)
n Rated speed (maximum attainable speed)
.../min
Revolutions or reciprocation per minute (revolutions, strokes, surface speed,
orbits etc. per minute)
0 Off position (zero speed, zero torque...)
1, 2, 3, ...
I, II, III,
Selector settings (speed, torque or position settings. Higher number means
greater speed)
0
Infinitely variable selector with off (speed is increasing from 0 setting)
Arrow (action in the direction of arrow)
Alternating current (type or a characteristic of current)
Direct current (type or a characteristic of current)
Alternating or direct current (type or a characteristic of current)
Class II construction (designates double insulated construction tools)
Earthing terminal (grounding terminal)
2610Z09741 12-17 2050.qxp_2050 12/19/17 10:38 AM Page 7
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Symbols (continued)
IMPORTANT: Some of the following symbols may be used on your tool. Please study them
and learn their meaning. Proper interpretation of these symbols will allow you to operate the
tool better and safer.
Symbol Designation / Explanation
Designates Li-ion battery recycling program
Designates Ni-Cad battery recycling program
Alerts user to read manual
Alerts user to wear eye protection
This symbol designates that this tool is listed by Underwriters Laboratories.
This symbol designates that this component is recognized by Underwriters
Laboratories.
This symbol designates that this tool is listed by Underwriters Laboratories,
to United States and Canadian Standards.
This symbol designates that this tool is listed by the Canadian Standards
Association.
This symbol designates that this tool is listed by the Canadian Standards
Association, to United States and Canadian Standards.
This symbol designates that this tool is listed by the Intertek Testing
Services, to United States and Canadian Standards.
This symbol designates that this tool complies to NOM Mexican Standards.
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Disconnect the plug f rom t he po wer source before maki ng an y
assembly, adjustments or changing accessories. Such preventive
safety measures reduce the risk of starting the tool accidentally.
Functional Description and Specifications
Model 2050 High Speed Rotary Tool
ON/OFF
BUTTON
SHAFT LOCK
BUTTON
POWER
SUPPLY
DC
SOCKET
DC
JACK
VENTILATION
OPENINGS
COLLET
NUT
Model number 2050
Power Input rating 120V 60Hz
Power Output rating
18V 0.5A
Rated speed n 5,000—22,000 /min
Nut capacity 1/32"—1/8"
FIG. 1
VARIABLE
SPEED DIAL
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C
OLLETS
Four different size collets (see illus tration), to
accommodate different shank sizes, are avail able for your Rotary Tool. To install a different
collet, remove the collet nut and remove the old
collet. Insert the unslotted end of the collet in
the hole in the end of the tool shaft. Replace
collet nut on the shaft.
Al ways use the col let
which matches the shank
size of the accessory you plan to use. Never
force a larger diameter shank into a collet.
Note: Most rotary tool kits do not include all
four collets sizes.
FIXING STUCK COLLETS
It is possible for a collet to get stuck within the
collet nut especially if a collet nut is tightened
on to t he t ool witho ut a bi t in pl a ce. If t his
happens, the collet can be removed from the
collet nut by pushing the shank of an accessory
into the hole in the collet nut. This should cause
the collet to pop out of the collet nut.
COLLET NUT
To loosen, first press shaft lock button and
rotate the shaft by hand until the lock engages
the shaft preventing further rotation. Your
Dremel 2050 is equipped with a quick shaft lock
mechanism.
Do not engage lock while
the Rotary Tool is running.
With the shaft lock engaged use the collet
wrench to loosen the collet nut if necessary. The
collet nut must be loosely threaded on when
inserting an accessory. Change accessories by
inserting the new one into the collet as far as
possible to minimize runout and unbalance.
With the shaft lock engaged, use collet wrench
to securely tighten the collet nut (Fig. 3). Avoid
excessive tightening of the collet nut when
there is no bit inserted.
COLLET
NUT
TO
LOOSENTOTIGHTEN
SHAFT LOCK
BUTTON
FIG. 3
10
Always unplug Rotary Tool before changing accessories, changing
collets or servicing your Rotary Tool.
Assembly
COLLET IDENTIFICATION CHART
Collet sizes can be identified by the rings
on the back end of collet.
1/32" Collet has one (1) ring.
1/16" Collet has two (2) rings.
3/32" Collet has three (3) rings.
1/8" Collet has no rings. (Included in
most tool kits on the tool)
COLLET
NUT
IDENTIFICATION
RINGS
480
1/8"
COLLET
SHAFT
481
3/32"
COLLET
482
1/16"
COLLET
483
1/32"
COLLET
FIG. 2
COLLET
WRENCH
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Operating Instructions
Observe all warnings and
safety instructions when
us ing the rot ary tool. Fai lure to fol low
recommended procedures could re sult in
personal injury or property damage.
Dremel 2050
Thank you for purchasing the Dremel 2050.
Th is pro duct wa s d esig ned by th e m any
Dremel users who passionately use their rotary
tools daily. This tool was designed to give you
the ultimate performance when working on
versatile detailed projects.
The Dremel 2050 is a versatile craft rotary tool,
which provides the best results for versatile
detailed projects. The slim size of the tool
allows for maximum control and allows you
closer to your work piece. The lightweight
design and soft grip on the tool mean the tool
can be held comfortably for extended periods of
use. You will appreciate the many applications
that the Dremel 2050 can easily tackle.
Rotary Tool Introduction
The Rotary Tool is comfortable in the hand, and
is made to accept a variety of accessories
in clud ing engr avin g point s an d cutter s,
polishing wheels and brushes and sanding
bands . Accesso ries c ome in a varie ty of
shapes and permit you to do a number of
different jobs. As you be come familiar with the
range of accessories and their uses, you will
learn just how versatile the Rotary Tool is. You’ll
see dozens of uses you hadn’t thought of
before.
The real secret of the Rotary Tool is its speed.
To understand the advantages of its high
speed, you have to know that the standard
portable electric drill runs at speeds up to 2,800
re volu tion s pe r m inut e. T he R otar y Tool
operates at speeds up to 22,000 revolutions
per minute. The typical electric drill is a lowspeed, high torque tool; the Rotary Tool is just
the opposite – a high-speed, low torque tool.
The major difference to the user is that in the
high speed tools, the speed combined with the
acces sory mounted in the collet does the work.
You don’t apply pressure to the tool, but simply
hold and guide it. In the low speed tools, you
not only guide the tool, but also apply pressure
to it, as you do, for example, when drilling a hole.
It is this high speed, along with its compact size
and wide variety of special accessories, that
makes the Rotary Tool differ ent from other
tools. The speed enables it to do jobs low
speed tools cannot do, such as engraving glass
and sanding rough wooden edges.
Getting the most out of your Rotary Tool is a
matter of learning how to let this speed work for
yo u. To lea rn abo ut mor e use s and the
ve rsat ilit y of Dr emel acce ssori es an d
attachments refer to this Owner's Manual or
check our website at www.Dremel.com or join
the conversation at facebook.com/dremel.
Turning tool on and off
Insert DC jack of the rotary tool into DC socket
of the power supply (Fig. 1). Insert power
supply into power outlet.
Assembly
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 the 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. To maintain balance on
abrasive wheel points, before each use, with
the wheel point secured in the collet, turn on
the Rotary Tool and run the 415 Dressing
Stone lightly against the revolving wheel point.
This removes high spots and trues up the
wheel point for good balance.
IMPORTANT SAFETY INSTRUCTIONS - SAVE THESE INSTRUCTIONS
DANGER - TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, CAREFULLY
FOLLOW THESE INSTRUCTIONS
For connection to a supply not in the U.S.A., use an attachment plug adapter of the proper
configuration for the power outlet, if needed.
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The tool is turned “ON” by the on/off button
(Fig. 1 and 9).
TO TURN TH E TOOL “ON” pr e s s and
release the on/off blue button.
TO TURN T H E TOO L “OFF” p r e ss and
release the on/off button.
Adjust the tool speed using the speed dial.
See “Operating Speeds” Section.
Stall Protection
This tool has a stall protection feature built
into it to protect the motor in the event of a
stall. If you stall the tool for too long, or bind
the bit in a work piece, especially at high
speeds, it will automatically turn itself off.
Simply take the tool out of the material you
we re s tall ed i n, t urn it bac k on aga in t o
continue using it.
Using the Rotary Tool
The first step in learning to use the Rotary Tool
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 Rotary Tool
to be grasped much like a pen or pencil (Fig. 4).
Always hold the tool
away from your face.
Ac cess orie s can be
da mage d durin g
handling, and can fly
apart as they come up
to speed. This is not
common, but it does happen.
Whenever you hold the
tool, be ca refu l n ot to
cover the air vents with your hand. This
blocks the air flow and causes the motor to
overheat.
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 sanding or etching to begin. Con centrate on guiding the tool over the work using
very little pressure from your hand. Allow the
accessory to do the work.
For best control in close or detailed work, grip
the Rotary Tool like a pencil between your
thumb and forefinger (Fig. 4).
The “Golf Grip” method of holding the tool is
used for more aggressive operations such as
sanding or grinding a flat surface (Fig. 5).
Usually, it is best to make a series of passes with
the tool rather than attempt to do all the work in
on e pass. To san d a w o o den s u r face, f o r
example, pass the tool back and forth over the
work, much as you would a small paint brush.
Sand 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 effi cient work out of the accessory.
To select the right speed for each job, use a
practice piece of material.
VARIABLE SPEED DIAL
Your tool is equipped with a variable speed
dial. Th e sp eed may be adjust ed duri ng
operation by presetting th e dial on or
between any one of the settings.
FIG. 5FIG. 4
Operating Instructions
2610Z09741 12-17 2050.qxp_2050 12/19/17 10:38 AM Page 12
You can refer to the charts on page 14 to
determine the proper speed, based on the
material being wor k e d 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.
The speed of Rotary Tool is controlled by
setting this dial on the housing (Fig. 6).
13
Needs for Slower Speeds
Certain materials, however, (some plastics
and precious metals, for ex ample) require a
relatively slow speed because at high speed
the friction of the accessory generates heat
and may cause damage to the material.
Slow speeds (15,000 RPM or less) usually
are best for polishing operations employing
the felt polishing ac ces sories. They may also
be best for working on deli cate projects as
“eggery” work, delicate wood carving and
fragile model parts. (All brushing applications
require lower speeds to avoid wire discharge
from the holder.)
Higher speeds are better for carving and
shaping wood.
Hardwoods, metals and glass require high
speed operation, and drilling should also be
done at high speeds.
The p o i n t t o reme m b e r i s this: M a n y
applications and accessories in our line will
provide the best performance at full speed,
but for certain materials, applications, and
accessories, you need slower speeds, which
is the reason our variable speed models are
available.
To aid yo u in d e t e r m i n i n g the o p t i m u m
operational speed for differ ent materials and
different accessories, we have constructed a
series of tables that appear on page 14. By
referring to these tables, you can discover
the recommended speeds for each type of
acc e s s o r y. Look t h e s e tables ov e r and
become familiar with them.
Ultimately, the best way to determine the
correct speed for work on any material is to
prac tic e f or a few minutes on a piece of
scrap, even after referring to the chart. You
can quic kly le arn that a sl owe r or faster
speed is more effective just by observing
what hap pens as you make a pass or two at
different speeds.
Some rules of thumb in regard to speed:
- Polishing, buffing and cleaning with any
type of bri stle br ush must be d one at
speeds not greater than 15,000 RPM to
prevent damage to the brush.
- Increasing the pressure on the tool is not
the answer when it is not performing as
you think it should. Perhaps you should be
using a different accessory, and perhaps
an adjustment in speed would solve the
problem. Leaning on the tool does not
help.
Let speed do the work!
Operating Speeds
F
IG. 6
ON/OFF
BUTTON
VARIABLE
SPEED DIAL
Settings for Approximate Revolutions
Dial Setting Speed Range
1 5,000-7,000 RPM
2 8,000-10,000 RPM
*3 11,000-14,000 RPM
4 15,000-18,000 RPM
5 19,000-22,000 RPM
* Maximum Setting for Wire Brush.
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14
Set speed dial to the setting recommended for the material being worked and the catalog
number of accessory being used. For speed range for each setting please refer to “Operating
Speeds” on page 13.
Speed Dial Settings
High Speed Cutters
Catalog
Number
Soft
Wood
Hard
Wood
Laminates
/Plastics
Steel
Aluminum,
Brass, etc.
Shell/
Stone
Ceramic Glass
191 5 5 2 3-4 5 - - -
125 5 3-4 2 3-4 3-4 - - -
Engraving Cutters
Catalog
Number
Soft
Wood
Hard
Wood
Laminates
/Plastics
Steel
Aluminum,
Brass, etc.
Shell/
Stone
Ceramic Glass
105 5 5 5 2 3-4 - - -
Diamond Wheel Points
Catalog
Number
Soft
Wood
Hard
Wood
Laminates
/Plastics
Steel
Aluminum,
Brass, etc.
Shell/
Stone
Ceramic Glass
7103 5 5 - - - 5 5 5
Polishing Accessories
Catalog
Number
Soft
Wood
Hard
Wood
Laminates
/Plastics
Steel
Aluminum,
Brass, etc.
Shell/
Stone
Ceramic Glass
414, 429 - - - 3-4 3-4 3-4 3-4 3-4
Wire Brushes
Catalog
Number
Soft
Wood
Hard
Wood
Laminates
/Plastics
Steel
Aluminum,
Brass, etc.
Shell/
Stone
Ceramic Glass
428 2-3 2-3 1 2-3 2-3 - - -
Sanding Bands and Discs
Catalog
Number
Soft
Wood
Hard
Wood
Laminates
/Plastics
Steel
Aluminum,
Brass, etc.
Shell/
Stone
Ceramic Glass
430, 431, 438 1-5 1-5 1-4 5 5 1-5 1-5 -
Use only Dremel®, high-performance accessories.
Questions or Problems? Call 1-800-437-3635
or check our website at www.Dremel.com
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15
COLLETS
If you expect to use a variety of accessories,
we recommend that in the beginning you
purchase a complete set of four collets. Store
these so that you will have the proper size of
collet for any accessory or drill bit you want
to use. Currently, the 1/8", 3/32",1/32" and
1/16" collets accommodate all of the avail able Dremel accessories. 1/8" collets are
included in most rotary tool kits.
Dremel Accessories
Use only Dremel®, high-performance accessories. Other accessories are
not designed for this tool and may lead to personal injury or property damage.
Store accessories in a dry and temperate environment to avoid corrosion and deterioration.
The number and variety of accessories for the Rotary Tool are almost limitless. There is a category
suited to almost any job you might have to do and a variety of sizes and shapes within each
category which en ables you to get the perfect accessory for every need.
Extension Cords
If an extension cord is
necessary, a cord with
adequate size conductors that is capable
of carrying the current necessary for your
to o l m u s t be used. Th i s w i l l prevent
excessive v oltag e dro p, loss of power or
overheating. Grounded tools must use 3-wire
extension cords that have 3-prong plugs and
receptacles.
NOTE: The smaller the gauge number, the
higher the cord capacity.
RECOMMENDED SIZES OF EXTENSION CORDS
120 VOLT ALTERNATING CURRENT TOOLS
Tool’s
Ampere
Rating
Cord Size in A.W.G. Wire Sizes in mm
2
Cord Length in Feet Cord Length in Meters
25 50 100 150
15 30 60 120
3-6
6-8
8-10
10-12
12-16
18
18
18
16
14
16
16
16
16
12
16
14
14
14
–
14
12
12
12
–
0.75
0.75
0.75
1.0
–
0.75
1.0
1.0
2.5
–
1.5
2.5
2.5
4.0
–
2.5
4.0
4.0
–
–
Service
NO USER SE R V I C E -
AB L E PARTS INSIDE .
Preventive maintenance performed by un au thor i z e d personn e l may result i n
mi s p l a c i n g of internal wires and
components which could cause serious
hazard. We recom mend that all tool service
be performed by a Dremel Service Center.
SE RVIC E MEN: Disco n nect tool an d /or
charger from power source before servicing.
D.C. MOTORS
The motor in your tool has been engineered
for many hours of dependable service. To
maintain peak efficiency of the motor, we
recommend it be examined every six months.
Only a genuine Dremel replacement motor
specially designed for your tool should be
used.
Cleaning
To avoid accidents,
always be sure the tool
is turned “OFF” before cleaning. The tool
may be cleaned most effectively with com pr e s s e d dry air. A l w a y s w e a r s a f e t y
go g g l e s when cleaning tools w i t h
compressed air.
Ventilation openings and switch levers must
be kept clean and free of foreign matter. Do
not attempt to clean by inserting pointe d
objects through opening.
Certain cleaning agents
an d solve n t s dam a g e
plastic parts. Some of these are: gasoline,
car bon tetrachloride, chlorinated cleaning
solvents, ammonia and household detergents
that contain ammonia.
Maintenance
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MANDRELS
A mandrel is a shank with a threaded or screw
he ad, which are requ i red when y ou u se
polishing accessories, cutting wheels, sanding
di scs, and p ol ish ing point s . Th e re ason
mandrels are us ed is t hat san ding di scs,
cutting wheels and similar accesso ries must
be replaced frequently. The mandrel is a per manent shank, allowing you to replace only
the worn head when necessary, thus saving
the expense of replacing the shaft each time.
Screw Mandrel No 401
This is a screw mandrel used with the felt
polishing tip and felt polishing wheels. 1/8"
shank.
Small Screw Mandrel No 402
This is a mandrel with a small screw at its tip,
and is used with emery and fiberglass cutting
wheels, sanding discs and polishing wheels.
1/8" shank.
EZ Lock Mandrel No 402
The D r e m e l EZ L o c k makes a c c e s s o r y
changes easy as PULL - TWIST - RELEASE.
The one-piece mandrel design simplifies the
process of changing cutting wheels, buffs
and d e t ai l a b r a s i v e b r u s h e s ( EZ L o c k
compatible accessories).
EZ Drum™ Mandrel No EZ407SA
Th e Dre m e l EZ Dru m mak e s acc e ssory
changes easy as PULL - INSERT - PRESS
DOWN. T h e one-piece m a n d r e l design
simplifies the process of changing sanding
bands.
High Speed Cutters
Available in many shapes, high speed cutters
are used in carving, cutting and slotting in
wo o d , pla s t i cs an d soft meta l s such as
aluminum, copper and brass. These are the
accessories to use for freehand routing or
carving in wood or plastic, and for precision
cu ttin g . Ma de o f hi gh qu alit y st e el. 1/8 "
shank.
Engraving Cutters
This group has a wide variety of sizes and
shapes, and are made for intricate work on
ceramics (greenwa r e ) , wo o d ca r v i n g s ,
jewelry and scrimshaw. They often are used
in making complicat ed printed circuit boards.
They should not be used on steel and other
very hard mate ria ls but a re excel len t o n
wood, plastic and soft metals. 1/8" shank.
Aluminum Oxide Grinding Stones
(red/brown)
Round, pointed, flat — you name the shape
and there is one available in this category.
These are made of aluminum oxide and cover
vi r tuall y ev e ry p o ssibl e kin d of gri nding
application. Use them for sharpening lawn
mo wer b lade s , sc rewd r iver tips , kn ives,
scissors, chisels and other cutting tools. Use
to r e m o v e flash f r o m metal cast i n g s ,
deburring any metal after cutting, smoothing
welded joints, grinding off rivets and re mov ing
ru s t . These g r i n d i n g stones can b e
re s h a r p e n e d wi t h a dr e s s i n g st o n e . In
machine shops, high speed drills and cut ters
normally are ground with aluminum oxide
wheels. 1/8" shank.
Dremel Accessories (Continued)
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17
Silicon Carbide Grinding Stones
(blue/green)
Tougher than aluminum oxide points, these
are m a d e es p e c i a l l y for u s e on h a rd
materials s u c h a s glass and ce ramics.
Typical uses might be the removal of stilt
marks and excess glaze on ceramics and
engraving on glass. 1/8" shank.
Diamond Wheel Points
Excellent for fine detail work on wood, jade,
ceramic, glass and other hard material. Bits
are cove red with diamond particl es. 1/8"
shanks. (Not re c ommended for
drilling)
Wire Brushes
Maximum oper a t i n g
speed 15,000/min. Allow
brush to run at 15,000/min for one minute
before us e. Refer to Operating Sp eeds
section for proper tool speed setting.
Three different shapes of wire brushes are
available. 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, witho ut leaving "after-rust".
Brass brushes are non sparking, and softer
than steel; making them good for use on soft
me t a l like g o l d , cooper and b r a s s. The
carbon wire brushes are good for general
purpose cleaning.
Bristle Brushes
These are ex c e l l e n t cleaning too l s on
silverware, jew elry and antiques. The three
shapes make it poss ible to get in to tight
corners and othe r diffi cult places . Bristle
brushes can be u s e d w i t h po l i s h i n g
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.
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
resu lt in wi re breakage and shortened
brush life.
INCORRECT:
Excessive pressure can cause wire breakage.
CORRECT: Wire tips doing the work.
Dremel Accessories (Continued)
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18
Dremel Accessories (Continued)
Polishing Accessories
These in clud e an impre gnated polishing
point and an impregnated polishing wheel for
bringing metal sur faces to smooth finish; a
felt polishing tip and felt polish ing wheel, and
cloth polishing wheel, all used for polishing
plastics, metals, jewelry and small parts. Also
included in this group is a p o l i s h ing
compound (No. 421) for use with the felt and
cloth polishers.
Polishing po i n t s m a k e a v ery 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 po lis hing co mpo und is ne ede d when
using the 425 Polishing Wheel.
Aluminum Oxide Abrasive Wheels
Use to remove paint, deburr metal, polish
stainless steel and other metals. Available in
medium grit. 1/8" shank.
Sanding Accessories
Sanding discs in fine, medium and coarse
grades are made to fit mandrel No. 402 and
EZ407. They can be used for nearly any
sm all san ding job you mig h t ha ve, fro m
model making to fine furniture finish ing. In
addition, there is the drum sander, a tiny
drum wh ich fits into the Rotary Tool and
makes it possible to shape wood, smooth
fiberglass, sand inside curves and other diffi cult places, and other sanding jobs. You
replace the sanding bands on the drum as
they become worn and lose their grit. Bands
come in fine medium and coarse grades.
Flapwheels grind and polish flat or contoured
surfaces. They are used most effectively as a
finishing sander af t e r h e a v i e r sur f a c e
sanding and material removal is completed.
Flapwheels come in fine and coarse grades.
Buffs are a great finishi ng accesso ry for
cleaning and lig h t sanding. Th e y work
effectively on metal, glass, wood, aluminum
and plastics. Coarse and medium buffs are
sold together. All buffs are sold individually.
Do not exceed 15,000 RPM in speed. 1/8"
shank.
Grinding Wheel
Use for deburring, removing rust, and general
purpose grinding. Use with Mandrel #402.
Collet Fan
Blows dust away for greater visibility to work
piece . G reat fo r sanding, en graving and
carving. Do not use dust blower to stop or
slow down the tool. Do no t conta ct dust
blower with fingers or workpiece during use.
Dremel Chuck
This chuck allows you to quickly and easily
change accessories on Dremel Rotary Tools
without c h a n g i n g col l e t s . Accepts
accessories with 1/32” - 1/8” shank. Read
in s t ruction man u a l . Ins e r t and sec u r e ly
tighten the shank of the accessory well within
the jaws of the chuck.
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Mandrel N° 402 has a small screw at its tip, and is used with sanding discs.
Mandrel No. 401 is used with the felt polishing tip and wheels. Thread the tip on to the screw
carefully. The felt tip must thread down straight on the screw Mandrel, and be turned all the
way to the collar.
To replace a band on the Drum Sander, loosen
the screw without removing it to contract the
drum then slide the old band off. Slide the new
sanding band on and then expand the drum by
tightening the screw once again.
Before each use, check
to make certain that all
components are assembled to accessory
shank and that the drum is sufficiently
expanded to secure the band during use. If
sanding band is loose on the drum during
operation it may “fly” off and strike you or
bystanders.
Replacing Screw Mandrel Accessories
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EZ Lock™ Mandre l No . EZ 4 0 2 h a s a
spring-loade d sleeve and is used wit h
s
anding disks, abrasive buffs and polishing
cloth.
Alwa ys make sure the
rotary tool is “OFF” and
disconnect the plug fr o m the powe r
source or the battery pack from the tool
before changing ac c e s s o r i e s . S u c h
preventative safety measures reduce the risk
of starting the power tool accidentally.
To load accessory:
1. Insert EZ Lock™ mandrel 1 into collet as
deep as possible and tighten Dremel collet
nut (Fig. A1).
Note: There is a blue spacer 2 that will
bottom out on the collet nut, setting the
mandrel to the correct depth.
2. Pull spring-lo a d e d slee v e 3 D O W N
towards tool with one hand and hold. You
can b r a ce t h e to o l on t he b o d y o r
workbench for extra leverage (Fig. A2).
3. With the other hand, align bow tie interface
4 on mandrel with metal bow tie interface 5
on bottom of accessory 6 (Fig. A2).
4. Place accessory on the mandrel to a point
just below the bow tie on the mandrel 4
and twis t 9 0 degrees until the b ow tie
interface 5 on the accessory 6 aligns with
the sleeve 3. Release sleeve 3. Accessory
6 should lock in place (Fig. A3).
Incorrect s e a t i n g of
acce sso ry on mandrel
may lead to personal injury or property
damage. To check for proper seating, hold
shaft lock button 7 and twist the accessory 6.
The accessory 6 will not be able to rotate on
mandrel.
To unload accessory:
1. Pull spring-loaded sleeve 3 DOWN toward
tool with one hand (Fig. A3).
2. Hold s l e e v e 3 do wn while t w i s t i n g
accessory 6 90 degrees (Fig. A3).
3. Remove accessory 6 (Fig. A3).
During use
Avoid damage to EZ lock™ mandrel by not
letting it contact the workpiece.
EZ Lock™Operating Instructions
FIG. A2
90°
FIG. A3
FIG. A1
1
7
2
3
4
56
3
4
56
2610Z09741 12-17 2050.qxp_2050 12/19/17 10:39 AM Page 20
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