OverLord 3D Printer User Manual
DFRobot
3DPrinting team
Dec.2014
OverLord 3D Printer User Manual
2
Contents
STATEMENT...................................................................................................................... 3
SAFETY PRECAUTIONS (BE SURE TO READ) ........................................................................ 4
CHAPTER 1 OVERLORD AND ITS MENU ........................................................................... 6
1.1 OVERLORD 3D PRINTER STRUCTURE (TAKE PRO VERSION FOR EXAMPLE) ................ 7
1.2 SPECIFICATION .......................................................................................................... 8
1.3 MENU INTRODUCTION (TAKE PRO VERSION FOR EXAMPLE) ..................................... 10
CHAPTER 2 HOW TO PRINT .......................................................................................... 11
2.1 TURN ON OVERLORD 3D PRINTER .................................................................................... 12
2.2 START-UP .................................................................................................................... 12
2.3 PREPARE PRINTABLE MODELS FILES .................................................................................... 12
2.4 CURA INSTALLATION AND SETTINGS ................................................................................... 13
2.4.1 FILE LOCATION .................................................................................................................... 14
2.4.2 CURA INSTALLATION ............................................................................................................. 14
2.4.3 CURA SETTINGS ................................................................................................................... 16
2.5 START USING CURA ....................................................................................................... 21
2.5.1 INTERFACE.......................................................................................................................... 21
2.5.2 YOUR FIRST PRINT ................................................................................................................ 22
2.5.3 FULL-SETTINGS .................................................................................................................... 23
2.6 PRINTING .................................................................................................................... 26
2.7 AUTO-REMOVE/FEED PRINTING MATERIAL .......................................................................... 30
2.8 ADVANCED FUNCTIONS .................................................................................................. 34
2.8.1 BREAK POINT RESUME .......................................................................................................... 34
2.8.2 AUTO/MANUALLY CALIBRATE BUILDPLATE ................................................................................ 36
CHAPTER 3 MAINTENANCE .......................................................................................... 38
3.1 CLEAN YOUR NOZZLE ............................................................................................... 39
3.2 CLEAN THE BROKEN FILAMENT INSIDE EXTRUDER ................................................... 42
3.4 FASTENING THE BELT ............................................................................................... 46
3.5 HOW TO PAINT THE GLUE BEFORE PRINTING （ONLY FOR OVERLORD PRO） ......... 46
3.6 USE SPECIAL 3D PRINTING TAPE (ONLY FOR OVERLORD) ......................................... 47
3.7 MAINTENANCE OF OVERLORD’S PARTS .................................................................... 48
CHAPTER 4 FAQS ......................................................................................................... 50
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Statement
OverLord 3D Printer User Maunal will be updated when necessary. Please notice our official
website http://www.DreamMaker.cc, and download the latest version.
This manual helps users to master the basic operation skills of OverLord 3D Printer. All users
must read this manual before operating OverLord 3D Printer. All users should follow the steps and
act according to this manual. Any dangers or losses caused by improper use, or use beyond the
range of OverLord 3D Printer, DFRobot does not assume any legal liability.
It is not allowed to modify, scan, copy or translate this user manual without the permission of
DFRobot. Otherwise DFRobot will investigate and affix its legal liability. OverLord 3D Printer
User Manual is under copyright protection. DFRobot owns the final interpretation of all contents
in this User Manual.
@ Copyright 2014 DFRobot All Rights Reserved
Dec. 2014
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Safety Precautions (Be sure to read)
Before operating OverLord, please read the following below. In order to avoid accidental
injury and property damage, please do not do anything that has not been described in OverLord
3D Printer User Manual. Any dangers or losses caused by improper use, or use beyond the range
of OverLord 3D Printer, DFRobot does not assume any legal liability, unless otherwise required
by law, please understand.
Types and meanings of symbols
The “Forbidden” symbol indicates: The forbidden actions of using this equipment.
Neglecting these indications or wrongly manipulating this product may cause serious
injury or death to users or people surrounding.
The “Caution” symbol indicates: The actions you have to follow in order to use this
equipment properly. Neglecting these indications or wrongly manipulating this product
may cause people injury or death, print failure or product broken.
The warning symbol indicates: The part with this symbol
generates high temperature when the machine is on. For
your safety, please do not touch or draw near this part
with your body parts or any flammable or explosive
things.
The warning symbol indicates: The part with this symbol
generates high temperature when the machine is on. For
your safety and avoid injury, please do not touch or draw
near this part with your body parts or any flammable or
explosive things.
The warning symbol indicates: The part with this symbol
has moving parts. For your safety and avoid injury, please
do not touch or draw near this part with your body parts.
The sign indicates: The plug of the power adapter
with this sign should be plugged in in right direction.
Neglecting these indications or wrongly manipulating
this product may cause people injury or death, print
failure or product broken.
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*************************
Forbidden **************************
Avoid operating this product in forbidden places, on plane or other vehicles.
Avoid operating the equipment without anyone who knows how to operate at site.
Avoid placing the equipment near high heat source or flammable and explosive objects. Keep
a 15~32℃ thermal environment of the equipment when operating.
Avoid placing the equipment near flammable, explosive object. Pay attention to the cooling
and of the dry ambience around the equipment.
Do not disassemble or refit the equipment in the way this manual does not describe,
otherwise it may cause equipment failure or other serious accidents.
Do not use power supply (input: AC 100~240V) other than the one provided with the
equipment.
Do not drag, stretch or distort wires of the equipment in order to avoid causing fire, electric
shock or equipment failure.
Do not plug or unplug the power when your hands are wet. The plug should be inserted into
plug base completely when operate the equipment.
During the printing or during 10 minutes after the printing is done, when the
nozzle/buildplate is still above 40 ℃, do not put any your body part inside the machine in
order to avoid high temperature damage.
Do not clean the equipment when the power supply is still on. Clean the dust and printing
material that is stick on to the printer by dry cloth.
*************************** Caution **************************
If the 3D Printer is in smoke or making abnormal noise, please turn off the power switch and
stop printing immediately.
Avoid placing the 3D Printer in high vibration or other unstable environment.
Avoid accumulating heavy objects on the 3D Printer.
When moving the equipment, act carefully and gently. Please avoid to touch the inside
structure.
The 3D Printer should be placed in a ventilated, cool, dry and less dust environment.
Contact technical support: support@dreammaker.cc for technical solution.
DreamMaker customer service QQ group: 323452686.
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Chapter 1 OverLord and its menu
Brief:
1.1 OverLord 3D Printer Structure
1.2 Specification
-- OverLord Pro
-- OverLord
1.3 Menu Introduction
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1.1 OverLord 3D Printer Structure (Take Pro version for example)
Filament cantainer
OLED screen and control panel
Feeding Tube
Nozzle Part/Hotend
Build Plate (The glass is optional for Pro version)
SD card Port
Turned off
Pay attention to the plug direction
Turned on, blue light on
Pay attention to the plug direction
X axis
Y axis
Z axis
OverLord Pro (Front)
OverLord Pro (Right)
Z axis
Y axis
X axis
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1.2 Specification
OverLord Pro
Machine Model
OverLord Pro
Printing Performance
Print technology
FFF (Fused Filament Facrication)
Build Volume
Cylinder ： 170mm x 260mm Diameter x
Height
Print Speed
100mm/s
Layer Resolution
20μm ~ 200μm
Nozzle Diameter
0.4mm
Operation Nozzle Temperature
200℃~250℃
Operation Heated Bed Temperature
50℃~100℃
Ambient Operation Temperature
15℃~32℃
Rating Power
221 W
Power Requirements
24V 9.2A
External Power Supply AC Input
100~240V 50/60Hz 4.0A
Software
Included Software
Cura (Open Source)
Supported file types
*.stl; *.obj; *.dae; *.amf; *.bmp; *.jpg; *.jpeg;
*.png; *.g; *.gcode
Operating systems
Windows; MAC OSX; Linux
Components
Printing filament
PLA/1.75mm ABS/1.75mm
Connectivity
SD HC Class 4/ USB
Build Platform
Heated Glass Bed with Glue stick
Dimensions
Product dimensions
370mm × 320mm × 725mm
Product Weight
12kg
Shipping dimensions
470mm × 450mm × 855mm
Shipping weight
15kg
Storage temperature
0℃~32℃
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OverLord
Machine Model
OverLord
Printing Performance
Print technology
FFF (Fused Filament Facrication)
Build Volume
Cylinder ： 150mm x 160mm Diameter x
Height
Print Speed
100mm/s
Layer Resolution
20μm ~ 200μm
Nozzle Diameter
0.4mm
Operation Nozzle Temperature
200℃~250℃
Operation Heated Bed Temperature
N/A
Ambient Operation Temperature
15℃~32℃
Rating Power
120 W
Power Requirements
24V 5A
External Power Supply AC Input
100~240V 50/60Hz 4.0A
Software
Included Software
Cura (Open Source)
Supported file types
*.stl; *.obj; *.dae; *.amf; *.bmp; *.jpg; *.jpeg;
*.png; *.g; *.gcode
Operating systems
Windows; MAC OSX; Linux
Components
Printing filament
PLA/1.75mm
Connectivity
SD HC Class 4/ USB
Build Platform
Acrylic Buildplate
Dimensions
Product dimensions
370mm × 320mm × 625mm
Product Weight
12kg
Shipping dimensions
470mm × 450mm × 855mm
Shipping weight
15kg
Storage temperature
0℃~32℃
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1.3 Menu Introduction (Take Pro version for example)
The optimaized OverLord User interface simplified the operation of 3D printer. By just pushing
down the button, OverLord is able to print, change material, and calibrate the buildplate all by
itself. For normal users, the default settings are enough for them to do a good print. The advanced
users, however, are able to re-set the printing parameters to satisfy their specific needs.
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Chapter 2 How to Print
Brief:
2.1 Turn on OverLord 3D Printer
2.2 Startup
2.3 Prepare printable models files
2.4 Cura Installation and settings
--file location
--Cura Installation
--Cura Settings
2.5 Start using Cura
--Interface
--Your first print
--Full-setting
2.6 Printing
2.7 Auto-remove/feed printing material
2.8 Advanced functions
--Break point resume
--Auto/Manually calibrate buildplate
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2.1 Turn on OverLord 3D Printer
Attention: Please mind plugging direction to avoid burning main PCB down!
2.2 Start-up
OverLord runs machine Start-up at the first time you open it. Please follow the instructions
and enjoy the basic operating experience.
CAUTION：Before start-up, make sure there is nothing left on buildplate. During
start-up, OverLord operates its high temperature (220℃) moving part. To protect your
safety, please do not reach inside while OverLord is in operation.
2.3 Prepare printable models files
The first step of using 3D Printer is to make connections. Usually we build our 3D models in
computers. How do we “import” it into a 3D Printer? We need something called “3D model
slicing software”. Here is how it works. It first cuts the model into thousands slices, calculates
nozzle’s moving trajectory on each slice, plans how much material to extrude out of nozzle
Turn off status
Turn on status, blue light on
Plug in
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during every single second, then processes all the movement information into .gcode format
that can be recognize by 3D Printers.
OverLord 3D Printer uses open source model slicing software Cura. You will find it already
in the SD Card sent with the machine, or you can download it directly from our website:
www.dreammaker.cc. (source: http://wiki.ultimaker.com/Cura).
NOTE:
1. Before using Cura, an electronic 3D model should be prepared. The following software:
Solidworks, UG NX, ProE, 3DMax, Rhino, Google SketchUp, etc. can help you create a model.
You can easily get a .stl format by “save as” or “export”. Besides, you can download existing 3D
models on-line, or creating it by a 3D scanner.
2. If you want design your own 3D model, please keep in mind the fabrication principle of FFF 3D
Printer and avoid going beyond its limitation. For example, try to avoid over-hangs without
support structure during modeling to keep the print in good shape.
3. Some precautions when you export .stl format model files using different modeling software:
(This part experience is from internet.)
*Solidworks can directly “save as” .stl format.
*In UG NX, the tolerance of Trigonometric should set to 0 before exporting.
*Catia uses DTL Rapid Prototyping module, please set precision using Tesselation function.
*In AutoCAD command line, input “Faceres -> 1~10 (10 fine, 1 coarse) -> STLOUT -> select
entity -> Binary” to export .stl file.
*The precision of exporting .stl in 3D Max and Maya should above 0.01, amount should below
1,000,000.
Then, let’s begin to install and set-up Cura.
2.4 Cura Installation and Settings
3D model.STL
Transferred to .Gcode
by Cura
Save into SD card and insert SD
card into OverLord
Top
This is an over-hang structure. You
will print it better if the specified
angle is greater than 130°.
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2.4.1 File location
OverLord official website www.Dreammaker.cc provides free download of Cura installation
file.
You can find the installation file in your SD card too.
2.4.2 Cura Installation
The following tutorial is based on Windows system. If your system is MAC or Linux, please
download the right version and install afterwards.
Find the installation file, run it by double click.
Do not tick it if you want to preserve old version Cura.
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2.4.3 Cura settings
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If this is your first time running Cura, “First time run wizard” will help you set the software.
(Former users can add new 3D Printers through” Machine setting--Add new machine”)
当你第一次打开 cura 时，将出现
“First time run wizard”字样。
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There are some difference between the settings of OverLord Pro and OverLord.
(1) OverLord Pro
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Now appears the software UI, click “machine” in the menu and choose “Machine settings”.
Set the parameters as shown in the picture. Take special care to those in orange circle. Click “OK”
to finish.
NOTE: You should choose “UltiGCode” for “GCode Flavor”.
(2) OverLord
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Click “machine” in the menu and choose “Machine settings”.
Set the parameters as shown in the picture. Take special care to those in orange circle. Click “OK”
to finish.
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NOTE: You should choose “UltiGCode” for “GCode Flavor”.
2.5 Start using Cura
2.5.1 Interface
Quick print
The main interface is consists of 3 parts: Menu, Control region, and Display region.
*Control Region: choose print quality and whether you need a support for your mode
*Display Region: displays your model shape and printable region.
Full settings
For full settings, go to “Expert-Switch to full settings”.
Full Settings Interface
Menu
Control
Observation window
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2.5.2 Your first print
Click “File－Load model file…”（Ctrl+L）
Usually 3D model files are in .stl format. You can also load .jpg/.bmp/.png file. Cura will
transfer the file into 3D shape then create .gcode that can be printed.
Two regions, A and B, appear on the left side.
Region A provides 3 kinds of printing scheme, which are “High quality print”, “Normal
quality print” and “Fast low quality print” respectively. Under “High quality print” option, it takes
A
B
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a long time to create a high quality print. Under “Fast low quality print” option, the printing speed
accelerates, however the quality of print goes down too. You would like to choose “Normal quality
print” to balance the time and quality.
Region B enables you to choose whether the model need a support or not. If yes, then support
is automatically generated under over-hang structure during printing.
Slicing and transferring work is done automatically after the model is uploaded. In the left
corner of display region, it shows the estimated printing time and grams of material consuming.
For example, the picture below shows the model probably needs 0.48 meter 4gram material
to print 45 minutes.
The next step is click “file－Save GCode…” and save GCode to your SD Card.
OverLord can print without connecting a computer. Copy the generated Gcode into a SD card, and
then insert the SD card into OverLord. Now you can 3D print the model by touching the buttons
on OverLord’s control menu.
2.5.3 full-settings
Basic settings
In basic settings, users are able to adjust settings according to the model shape and their
special needs. We recommend you the following settings shown in picture below. (There are
no difference between OverLord and OverLord Pro in these settings.)
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Advanced settings
Advanced settings provide some setting of your specific machine, please do not change
them if not necessary. Below are recommended settings.
Plug-ins
Cura provides plug-in interface. User can download or programme different plug-ins to
achieve special function. The plug-in is written in Python langrage.
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Expert settings
Click “Expert-Open expert settings…” (or Ctrl+E) on menu to open expert settings window.
There are more professional settings in the Expert-config window. The following settings are
recommended. We do not suggest changing these settings unless you know exactly what these
parameters indicate.
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2.6 Printing
CAUTION：Some operations of 3D Printer generate high temperature in 3D printer
parts. Please do not let any part of your body reaching inside to prevent injury.
CAUTION: 3D printing is one kind of production operation. Please make sure there is
an operator nearby during its operating. Always remember SAFETY FIRST. Cut off the
electricity immediately when necessary to prevent injury.
The example here is OverLord Pro. OverLord is slightly difficult in certain steps. The
difference will be illustrated in these steps.
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(1) Before printing, make sure
there is nothing left on the
buildplate. If there is broken
dry glue membrane left, please
wipe it away with a wet cloth.
Then before printing, paint
glue stick 3 times on the dry
buildplate;
Because the glue is sticky, if
start printing before dry out,
it will be difficult to remove
the print object. To save your
time, you could choose
“Temperature—Heat up Build
plate—60 ℃ ” to accelerate
the drying process.
OverLord has an acrylic build
plate, which cannot be
heated. Before printing, you
should tape the special
printing tape on the board.
The coarse surface of the tape
will help the object stick on
the plate.
(2) Drag .stl model into Cura
and generate printable .gcode
file. Copy that .gcode file into
SD card. Insert SD card into
the bottom of OverLord. The
indicating blue LED will on
once the SD card is inserted.
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(3) Select “Print” in the
control panel to enter print file
chosen menu.
Attention: If there is an unfinished print task, OverLord will remind you if you want to
continue that task. Choose “Yes” to continue and “No” to give up and then enter print file
chosen menu.
(3) Select the print file.
(4) Press “OK”,
OverLord starts printing.
Press“↑”or“↓”to select, press
“OK” to enter or confirm.
Yes：Continue last unfinished task.
No：Start new print
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(5) After heating
complete, OverLord start
to print automatically. A
printing progress bar and
estimated time will be
shown on screen.
During printing, if there
is a demand, you can
pause the printing at
any time by select
“Pause”.
CAUTION:
*During the operation of 3D Printer, if any accident happens, please stop the
machine by turning off the power switch.
*During printing, select “Tune” to enter Tune menu.
Menu Item
Description
Return
Return to the printing status interface
Speed
Printing speed, 100% by default. Adjust it by pressing “↑” or “↓”.
Temperature
Temperature of nozzle. It should set to different default values according to
different materials. Adjust it by pressing “↑” or “↓”.
Buildplate
temp
Temperature of buildplate. It should set to different default values according to
different materials. Adjust it by pressing “↑” or “↓”.
Fan speed
Fan speed is set to 100% as default. Adjust it by pressing “↑” or “↓”.
Material flow
Material extrude rate, by default 100%. Adjust it by pressing “↑” or “↓”.
*During printing, you can select “Pause” to pause the printing. Once selected, the printer will
save printing progress data, and the screen shows “Waiting”. The saving finishes when
“Waiting” disappear. Next time when you enter print file menu again (it doesn’t matter
whether you have turned off the printer or not), OverLord will remind you do you want to
continue the unfinished task last time. Press “OK” to confirm.
(6) When the print is done,
nozzle returns to its home
position. Please wait until
the nozzle temperature and
buildplate temperature
drop down to room
temperature.
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(7) When the temperatures
of nozzle and buildplate
are back to room
temperature, carefully use
a scraper to remove the
print object.
CAUTION: Do not let the
scraper blade towards
yourself and other people,
and use it carefully to
prevent injury.
2.7 Auto-remove/feed printing material
CAUTION：Auto-remove/feed material generates high temperature in 3D printer nozzle
module. Please do not let any part of your body reaching inside the printer to prevent
injury.
If you want to change or remove printing material, press “↑” and “↓” on the main menu
and select “Material”.
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(1) Wait until the
preheating of the print
nozzle is done.
(2) After the heating is
done, select “Continue” to
auto-remove the material.
If there is no material
inside the printer, please
“Skip” this step.
(3) The extruder is
reversing material. After it
finish, drag out material
from the extruder and take
the spool of filament out.
(4) Seal the spool of
material inside a plastic
bag to conserve.
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(5) After removing the
material, select “Cancel” if
you want to stop feeding
material. Or you can press
“Ready” to move to the
next step. Please prepare a
new spool of material and
insert and PUSH it into
extruder tube, until you
feel the filament is going
inside automatically. At
last, put the spool of
material right in place.
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(6) Select “Ready”, the
material will be
automatically fed into the
nozzle.
(7) The material will exit
the nozzle when material
feeding complete. Select
“Ready” to move to
material settings.
If you change the material
during OverLord’s pausing,
please take care of your
print, and do not let this
waste material destroy your
print.
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(8) Last step, set what
material you are using, for
instance “PLA”. Press
“OK” to return to main
menu.
2.8 Advanced functions
2.8.1 Break point resume
The break point resume function allows pausing during printing.
1. During printing, select
“Tune” to enter Tune menu,
where you can select “Pause”
to pause printing.
2. “Pause” turns to “Pausing”
after chosen, which means
printer is saving printing data.
You can select “Resume” to
continue.
If you turn off printer after
Pausing, next time when you
enter “Print” menu, OverLord
will remind you if you want to
continue with last print. Select
“Yes” to continue.
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3. You can choose whether to
do it manually or not.
“Continue” means automatic
resume. “Manual” means
you need to adjust where on
Z axis to continue manually,
this function is made for
special cases.
4. The pictures on the left
shows what will happen if
you have chosen “Manual”.
OverLord records the height
of last pause point. Adjust the
start point (height) by
pressing “↑” and “↓”. Press
“OK” to confirm.
Especially, OverLord Pro has power protection function. Once there is a power failure,
OverLord Pro is able to save the printing progress. This function avoid print failures due to
accidental black out or mistaken unplug the power adapter.
Attention:
1. If turn the switch off directly, OverLord will stop for emergency. Although the
break-resume function still works, but the high temperature of the nozzle may damage your
print.
2. If the power failure happens due to the power plugs, the printing progress will be saved
along with nozzle gets back to its home place. A warning appears on the screen with breathing
light shining red.
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After solve the power problem, enter “Print” menu and continue last print.
2.8.2 Auto/manually calibrate buildplate
Build plate calibration, or leveling, is a very important and fundamental step before start your
printing. Build plate calibration let the printer know where is the build plate so that it can lay
down the first layer of printing in correct place. It is known that build plate calibration directly
affects the print result.
Usually, in the start-up program of OverLord, the build plate has been calibrated already, and
you do not have to do it again and again before printing. However, after using OverLord for a long
time, when you feel there is problem for the prints to adhere on build plate, even you have used
enough glue, and when the nozzle is hitting build plate during the first layer printing, it’s time for
you to re-calibrate the build plate again.
OverLord provides you a smart auto-calibration method, make it so easy that you only need
to press a button. This also takes you out of constant printing failure due to the un-leveled plate.
CAUTION: Before calibrate build plate, please ensure there is nothing left on build plate.
During calibrating, please do not reach into 3D printer with your body part to prevent
injury.
(1) Select “Level” in main
menu.
If continue with
“AUTO”, the nozzle will
automatically go down and
start calibration process until
it is over. It will return to
main menu after calibration
finish.
(2) If continue with
“MANUAL”, you need to
prepare an A4 paper to help
you finish this process.
Follow the steps shown on
screen, put A4 paper on
build plate under the nozzle.
Press “↑” or “↓” to lift
or lower the nozzle when it
tell you to do so, and move
A4 paper back and forward
to feel the resistance. Press
“OK” when the resistance is
large enough that you almost
cannot move the paper.
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Repeat this step until the
manual calibration finish.
(3) Select “Continue” to
optimize the calibration.
Repeat the steps in (2). After
calibration, the screen
returns to main menu.
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Chapter 3 Maintenance
Brief:
3.1 Clean your nozzle
3.2 Clean the broken filament inside extruder
3.3 Clean the broken filament inside filament tube
3.4 Fastening the belt
3.5 How to paint the glue before printing (Only for OverLord Pro)
3.6 How to use the special printing tape (Only for OverLord)
3.7 Maintenance of OverLord’s Parts
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3.1 clean your nozzle
Why:
The nozzle could be blocked by dirt, carbonized material or changing material of different
properties. Sometimes it happens gradually: first, porous structures start to appear on surface of
print object, then it becomes worse and worse, till there is nothing come out of the nozzle. If you
do not clean your nozzle when the above signs start to appear, the quality of print will become
worse and worse. The best way to protect nozzle from blocking is to use filament of good quality
and do not change it often.
Porous structures on print object surface
How:
1. Switch off the printer.
2. Find the nozzle module, loosen the black plastic spiral, unscrew the fastening screws and
disassemble the black shield together with the PCB of nozzle module. Remember do not get lost
the 4 washers.
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3. Unscrew the golden pneumatic fitting. Pull it up about 10mm. Cut off the filament along the
pneumatic cross section, so that about 10mm filament is left outside nozzle. This 10mm makes
taking out the filament easier afterwards.
CAUTION：The following steps will activate electricity. Please be careful during
operating, do not let the PCB of nozzle module touch any metal part or other
conductive part to prevent short circuit and burn of PCB.
CAUTION：The following steps generate high temperature in 3D printer nozzle
module. Please be careful during operating to prevent injury.
4. Switch on the printer.
5. Select “Temperature—Heatup Nozzle” on main menu, then heat up nozzle to 230℃.
6. Pull out the filament inside nozzle carefully and leave the white thin tube inside nozzle as it
used to be.
7．Unscrew the golden pneumatic fitting in the extruder module. Carefully take out the short thin
Cut
10mm
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white tube inside (shown below), then screw it to the nozzle module.
8. Insert 1 meter of filament you are using now into nozzle, push it hardly for a while and then pull
it back to get the dirt inside nozzle out. Cut the head of filament and repeat this step again and
again, until the filament flows out smoothly without much resistance.
9. If the above method doesn’t work, you could also use a 0.4mm diameter needle to push through
the nozzle from the outside in. Be careful of the heat when you are doing this. Then continue with
last step.
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10. After successfully clean the nozzle, carefully screw the original golden pneumatic fitting on.
Make sure the white thin tube inside nozzle is inserted into that golden pneumatic fitting, and do
not bend it. Then re-assemble the PCB and black plastic spiral.
3.2 Clean the broken filament inside extruder
Why:
Sometimes the extruder keeps feeding material while the nozzle is blocking. Because the filament
cannot move forward, gradually the filament inside extruder is worn out by extruder gear, as a
result, filament becomes too thin that extruder gear cannot drive it forward or backward anymore.
The worst case is the filament breaks inside extruder. Once you recognize this problem, you
should disassemble the extruder and clean it up.
How:
1. Open the hexagonal acrylic board above the machine, find the extruder, and unscrew 2
fastening screw and 1 adjusting screw with a spring on (marked below).
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2. Pull out the extruder with extruding stepper out and unplug the stepper wire. Then unscrew the
4 screws to disassemble stepper.
3. Carefully open extruder in half and take the broken filament out. Do not get the M3 nut inside
extruder lost.
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4． Re-assemble extruder and make everything back in place. When you assemble the adjust
screw, make sure the distance between the screw head and the mounting plane is about 6mm.
CAUTION: Be careful do not get lost the M3 nut inside extruder when operating.
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3.3 Clean the broken filament inside filament feeding tube
Why:
Sometimes the filament breaks inside filament feeding tube and affects material changing
function.
CAUTION：The following steps generate high temperature in 3D printer nozzle module.
Please be careful during operating to prevent injury.
CAUTION：The following steps will activate electricity. Please be careful during
operating, do not let the PCB of nozzle module touch any metal part or other conductive
part to prevent short circuit and burn of PCB.
How:
1. Select “Temperature—Heatup Nozzle” on main menu, and heat up nozzle to 230℃.
2. Unscrew the golden pneumatic fitting on nozzle module (see how to do this back in 3.1 clean
your nozzle). Pull out filament inside nozzle carefully and leave the white thin tube inside nozzle
where it is.
3. Select “movement--move material” on main menu, press “↓” to let extruder push the broken
filament out.
4. Switch off the printer, reassemble the nozzle module.
6mm
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3.4 Fastening the belt
Why:
Frequently printing operation may cause mechanical fatigue in belt, and the belt becomes longer
and longer. This may affect the quality of print too. If the print quality goes down however there is
no problem in the extrusion of material, maybe you would like to check whether the belt is
fastened or not.
How:
1. Find the belt fastener 5cm below the slider on rod.
2. Screw it clockwise to fasten the belt until it reaches the state shown below.
3.5 How to paint the glue before printing （Only for OverLord Pro）
Why:
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Painting glue on the build plate correctly avoids print detaching the build plate during printing. We
recommend clean the stick glue membrane once a while because it can cause uneven print surface
on bottom.
How:
1. Before printing, if there is broken glue membrane on build plate, please carefully wipe it clean
with wet cloth. Wait until it becomes totally dry (important).
2. Paint the glue stick on the printing area 3 times and form a glue membrane for a certain
thickness. Wait until the glue dry out.
3. You would like to select “Temperature—Heat up Buildplate” to 60℃ to speed up the glue
drying.
3.6 Use special 3D printing tape (Only for OverLord)
Why:
The rough surface of the special 3D printing tape is acting a great role in 3D printing. It helps the
object tightly adhere on the buildplate, which ensures the success of printing. The tape will be
worn out and eventually broken. It is not good for printing. It is suggested to check the tape status
each time before printing, flatten the tape and make sure it covers whole printing area.
How:
1. Before printing, if there is broken tape left on the buildplate, please remove it.
2. Paste the tape on the buildplate again.
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3.7 Maintenance of OverLord’s parts
Why:
If you do not use 3D printer more than 2 weeks, we recommend you to remove and seal the
filament, which changes its property gradually in open air, and unplug the lithium battery on
mainboard to extend its life.
How:
1. Select “Material” in main menu and remove the filament. Seal the filament in a plastic bag. Put
a small bag of drier with filament if you have one.
2. Disassemble the black acrylic, find the battery and unplug it.
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Chapter 4 FAQs
Problem
Solution
When I installing Cura, antivirus
software stops it.
We promise that the Cura installation file provided in the
OverLord SD Card does not contain any harmful files
that may destroy your computer or files. Please add trust
for Cura installation file.
The progress bar stops for a long time
during nozzle heating.
Poor contact of nozzle heating module. Check its wire
contact and restart 3D printer. Contact
support@dreammaker.cc if it appears frequently.
Print detaches from build plate;
Print bottom edge detaches;
The nozzle hits build plate during first
layer printing;
Run “Level—Auto” in main menu to calibrate and
remember to paint 3 layers of glue on build plate and
wait glue drying before printing.
The nozzle run off the original
trajectory during printing;
There is deviation between layers.
Add a little lubricating oil to the 6 rods of OverLord.
Check the tension in the 3 belts.
Follow the steps in “3.4 Fasten the belt”.
“Temp Sensor” error
Poor contact of temperature sensor in nozzle. Check its
wire contact and restart 3D printer. Contact
support@dreammaker.cc if it appears frequently.
“Temp Sensor BED” error
Poor contact of temperature sensor on build plate, please
contact support@dreammaker.cc.
“Redundant Temp” error
Broken or poor contact of temperature sensor in nozzle,
please contact support@dreammaker.cc.
How to reduce connecting strands?
Try larger retraction length and speed in
“Setting—Retraction setting”. Lower nozzle temperature
to 210~220℃ during printing and set printing speed to
80~110mm/s. Get rid of connecting strands and refine
the model by sandpaper or heating method.
Not enough material coming out of
nozzle during printing;
Abnormal porous structure on print
surface;
Nozzle seems blocked.
Confirm the setting in Cura is correct;
Check whether extruder is extruding material properly.
If it is not, select “Material” and reload filament once
more to see is there any material coming out of nozzle
after loading.
If the material doesn’t come out of nozzle, follow the
steps in “3.1 clean the nozzle”.
Filament is broken inside machine;
The function of “Material” (auto
reject/feed filament) doesn’t work.
Follow the steps in “3.2 Clean the broken filament inside
extruder” or “3.3 Clean the broken filament inside
filament feeding tube”
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DFRobot
Telephone: 86-021-61001656
Email: support@dreammaker.cc
Official website: http://www.dreammaker.cc
Address: Rm. #615, Y1 Bldg, Liangxiu Rd. #112, Shanghai, China
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