Mingda | MD-D01 | User manual | Mingda MD-D01 User manual

Desktop 3D Printer

The User Manual
MINGDA Technology Co.,LTD
Chapter 1
The Debugging of the machine
We will do our best to provide our customers more perfect 3D products. Our
principle is that make the user less trouble, and more easily. Before delivery,
we will debug the 3D printer precision from inside to outside. Ensure the
printing quality of the 3D printer
1. Open the packing box
Please when users receive the printer, make sure the integrity of the product
packaging, and check whether there is damage of printer.
Confirmed the packaging is completely, open box, now bring up 3Dprinter from
the box, carefully grasp the top of the frame, from both sides to lift the machine
(Caution: do not touch the internal drive belt and guide rail, have a chance to
cause a deformation of the guide rail, affect the performance of the machine.)
Gently bring up 3D printer from the box, put in your workstation.
Please open bag, you will find that all the parts have been out, Please don't
have to worry about the box there is missing any parts, because packagers
already in delivery sheet, inspection, inventory, to ensure that each delivery
After take out the machine you will find that most of the parts we have installed
for you, if not installed, then the machine we sent to you without adjustment
and test (note: this is not possible). So, you only need to install two parts: (1)
extruder. (2) The feeding. To the correct location, (extruder is fixed in inside
offrame and the feeding in accessories box.)
Left image feeding frame (Has been properly installed )
Middle image extruder (Has been properly installed)
Note: remember to put the white line with installation extrusion as above
In addition, here we discuss the installation of filament. Before delivery goods
to you we have previously installed consumables line for you, so, here
introduce you how to change filament. and some matters need attention.
Filament(Has been properly installed)
If you want to remove the old filament , and put in the new line, that must be
done under the conditions of nozzle heating, loosen the extruder of the spring,
after the nozzle temperature reach consumable wire melting point, you can
remove the old line. After inserting new consumables line in, must pay
attention that inserted filament to the bottom of nozzle, and then continue to
push, and observe whether there is melting consumable wire extrusion, if have
a silk flow out from the nozzle then installation of filament is successful, and
please lock screw rod of extruder.
Note: when installing consumables line some users can't push it to the top to
the extrusion head(nozzle), and lead it can’t flow out the silk when start printing,
so, we suggest use scissors or fire make the filament to be apiciform, then it
will be the more reach the extrusion head.
filament head
3,If you don't take out the old line, or want to change the color when printing,
while printing, in the Extruder inlet of old line,
cut the back-end of old line to flat, and also cut the front of the new line which
you want to replace to flat, new line against the old line, while the gears
rotating the new filament to white catheter, finally finished the replacement of
old and new filament
Note: in some cases, using this changing line method, when the new line
reach the printing nozzle, the new line will be struck.
Then the user will find nozzle is not out of silk. Fixed circle, then the solution is
to press black fixed circle, pull out the white catheter, then manually pull plug,
pressure, control new line, until the nozzle print the new silk, now , the line
changing troubleshooting is successful. Please remember to inserted white
catheter back again
press the black fixed circle
Pull plug, pressure
pull out the white catheter
Nozzle out the silk of the new line
Chapter 2 Menu
1. Boot interface
Figure 2.1 Boot Interface
Plug the power, turn on the switch, the display shows the progress bar
2. Main Interface
Figure 2.2 Main Interface
Dance through the progress bar, enter the main interface, the main interface
shows the status of the machine at this time
3. Manu Interface
Figure 2.3 Menu Interface
MINGDA Master Menu, Knob to select the menu, press the knob to select and
option. (Including: speed ratio, SD card, temperature control, motion control,
time setting, screensavers time, storage parameters, language settings,
version information, expert mode, U disk mode)
3.1 Speed override
Figure 2.3.1aSpeed override
Oppression chose to enter the speed override interface
Figure 2.3.1b Speed override interface
Real-time adjustment of the printing speed ratio
3.2 SD Card
Figure 2.3.2a SD card
Figure 2.3.2b SD card interface
Enter the SD Card interface, the displayed file is stored on the SD card slice
files (G code), rotating selection, press “OK” to start the machine automatically
3.3 Temperature Control
Figure 2.3.3a Temperature Control
Figure 2.3.3b Temperature Control Interface
Nozzle: Press selected control adjustment nozzle temperature
Hot bed: Press selected hot bed temperature control and regulation
Preheat ABS: Press the selected, the nozzle temperature and thermal bed
temperature will be set automatically if the material is ABS
Preheat PLA: Press the selected, the nozzle temperature and thermal bed
temperature will be set automatically if the material is PLA
3.4 Motion Control
Figure 2.3.4a Motion Control
Figure 2.3.4b Motion Control Interface
Figure 2.3.4c Reset Interface
Select X,Y,Z axis and the thermal head can be reset to the starting position
Figure 2.3.4c Movement Interface
Adjust the X,Y,Z,E axis position accurately
3.5 Time Setting
Set the system time
3.6 Screensaver time setting
Set the screen saver start time
3.7 Storage Parameters
Stored in printer menu parameter changes done to the printer directly in
accordance with the next start-store run-off control scheme.
3.8 Language Setting
Switch Chinese/English
3.9 Version Information
Display the current version information
3.10 Export Mode
Expert mode in the machine factory has been set up, Not recommend novice
users to change
3.11 U disk mode
When the printer is connected to the computer via USB cable, install the
correct drivers, press select U disk mode to read the contents of the SD card.
Chapter 3: The slicing software usage
The software installation:
Figure 3.1.1 software installation bag
Double-click to open your MINGDA installation bag
Click the next step:
Click the next step:
Click the next step:
Click the next step:
Click the next step:
Click the next step:
Click the next step:
Installing; Waiting until the installation is finished
Figure 3.1.2
There are two icons on the computer desk after the installation is
Cura:It’s our special software for our company’s 3D printer; Support the
exchange of the file of stl and obj ect,Changed it into the slicing file which is
recognized by the 3D printer(g-code)
Pronterface.exe Controller:it’s the adjust software when you are printing. It
can help you to adjust the MINGDA 3D printer’s horizontal position and height
position. and other parameters. It also can help to adjust the slicing file(g-code)
directly which you made it well. Control MINGDA Directly and begin to the
process of printing.
2. The software operation.
2.1 The specific meaning of the parameters.
2.1.1 The basic interface set.
Figure 3.2.1a MINGDA software basic interface
Height:The print model slicing height was generated from computer software.
When you need to print the very refined models. Choose the 0.2mm generally.
if you request the high quality of printing. Then you can choose 0.1mm or
0.05mm. the layer height determines the printing quality. If the height is larger.
Then the printing quality is worse. But the advantage is that it can shorten the
time. So the customers need to choose the layer height according to the
models application.
Thickness: Wall thickness; It refers to the outermost thickness of the model
slice section. Generally It’s the multiple of the nozzle diameter.(Our company
3D printer’s nozzle is 0.4. so the customers need to set it into 0.4*n). For
example. If you need the double layer thickness. Please set the 0.4mm nozzle
into 0.8. We recommend to use the 1.2mm wall thickness.
Recycle options:After selected by”√”;it can help to be retracted by the
materials in the extruder; When the 3D printer extruder needs to cross the
blank area.(such as the model appears cavity structure);The Extrusion
mechanism will retract the extruder materials to a certain length according
to the set,to reduce thee extruder material’s constant flow avoid damaging the
blank structure.。
Bottom/Top thickness; it’s the parameters of fill density which was set to print
how many layer of the bottom. It was set into the multiple of the layer height
generally。 If set a little bit thicker. The effect will be more beautiful. and the
body will also be better,but it takes longer time.
Fill:Internal filling ratio. It’s fully filled if it’s 100.But need to note. If you need to
completely hollow printing effect only needs to be set to 0. The general setting
of 20.
The Printing Speed:For larger rule model, the speed can be set to 80-100, if
the smaller model, corresponding speed is lower, such as the size of a coin
model. The speed is setting to 30.
The printing temperature:Temperature Set,it can be said to be the whole
situation parameter Settings. General Settings: ABS material is 220-240, the
PLA material is 195-205.
Support : Set whether print support or model bottom meshy support
structure.(plate and model’s balance)。Support option is selected by dropdown.
Three options in turn are: Don't add any support (None), just add support
appearance (Exterior Only) and add support Everywhere, ( Everywhere
including internal model), the general Settings is to select “add appearance” is
Print pedestal:it’s printed one layer material under the model to avoid
the model become roll. Three options are: No Pedestal (None), just contact
face to add pedestal (Brim), the entire projective plane add pedestal
(Raft);(usually we don't need to select the print pedestal Choose NONE)
Wire material diameter:It’s the ABS.PLA Materials diameters. Usually the
diameter of the wire roll is a certain error of 2.85 to 3.0. We usually have the
default is 2.95. Does not require frequent changes。
Material density:Recommend the default setting is 100%, because usually we
provide material in 1.23 to 1.28 g/cm ^ 3
Figure 3.1.1 b
2.1.2 Machine Settings interface
Figure 3.1.2 Software machine set interface
Nozzle diameter:Generally 0.4mm。
Recover Speed:Can make the retraction of the Settings, select the default,
can also be adjusted according to actual effect.
Recover Length:Can make the retraction of the Settings, select the default,
can also be adjusted according to actual effect.
The first layer thickness:Generally set: 0.1-0.3mm,This is related to plate
and nozzle distance. Select the default 0.3 mm, also can adjust according to
the actual effect.
Model sinking:If it's small between first layer and platform interface , then
automatically adjust model sinking, select the default.
Double Extruding:select the default.
The idle speed: select the default, or adjusted according to actual effect.
the bottom of the print speed: select the default, or adjusted according to
actual effect.
The fill print speed:select the default, or adjusted according to actual effect.。
The minimum layer time: select the default。
Whether to open the fan: select the default ; Open.
2.1.3 Plugins Interface and Start/End-G-code interface
This two page interface don't need to change Especially for beginners.
Advanced Settings - print skirt laps: refers to before print samples,Nozzle
running preparation for sample one circle around. the set has a cycle times
and the distance from the sample. when the User Settings, to ensure that the
skirt print was finished. the nozzle has the stable extrusion rate, this print
samples effect is best
2.2 Start Printing
2.2.1 Make the slicing file(g-code)
Figure 3.2.1a
Figure 3.2.1b
Figure 3.2.1c
File- Open Model. Open the 3D Model file which you have designed well.
Such as Stl file etc…
According to the last chapter section. 2.1 parameters’ specific content.
and to proceed with the detailed set.
After the specific parameters was set well. File-Save Slicing- Choose
save catalogues.
Figure 3.2.1d
The customer can get the 3D printer recognizable. g-code File After
Figure 3.2.1e
2.2.2 Start Printing
Method One: Online Printing (connecting the computer)
1,Open the Pronterface:
The parameters’ specific meaning.
Port: click on this button can update the port number list, please use 250000
baud rates.
Connection: connect to the printer.
Disconnect:disconnect the printer.
Reset:reset the printer internal parameters to initial state.
Real-time monitoring: Can Monitor the extruder and heat bed temperature
Open: open the .G-code code files was generated by slicing software
Print: After clicking on the print button. the machine will be entering the stage
of preheating, Pay attention: you dont' need to set the nozzle temperature;The
printing Software can read the temperature settings which into the .gcode
file. That's why if you want to change material. it must be regenerated the
gcode file.
Pause: The machine won't stop the nozzle heating for a short period of time
pause, And please close the nozzle heating for a long time pause.
XY Speed: Set XY axis movement speed manually
Z Speed:Set Z axis workbench movement speed manually
:X axis back to zero, the corresponding is Y axis and Z axis back to zero.

:XYZ axis all return to zero.
+X:Along the X axis direction. Move the nozzle, the number represents the
size of the moving distance and when moving to the border please note don't
out. -, +, - Y, Y + Z, X, Z, and so on,
Nozzle temperature, Set the nozzle temperature. it refers to the manual
preheating nozzle, the Set is Set, Off is closed, Here it is unable to control the
nozzle temperature when printing, only a pause or stop can control the
Heating bed temperature: set the temperature of the workbench, the function
of heating workbench is that the print items can paste on the workbench firmly,
also can prevent the ABS materials become warped edge printout.
Wire feeding test: for checking whether the wire feed is normal or not, the right
side frame is to fill the wire length.
Hard Waste test: for checking whether wire acceptance is normal or not, The
right frame is to fill the wire acceptance speed.
Speed adjustment: In the process of printing. If need to set the acceleration
and deceleration, fill in the Numbers (%) first, then click on the confirmation,
The too fast printing speed maybe will lower print quality and wire feed rate,
please use this function carefully according to the actual situation of print
Print steps as follows:
1. Choose the corresponding port number, baud rate use 250000 and then
click on the Connection..
2. Click "open" to load the file which was generated by sliced
3. If it is necessary to Set down the temperature of the heating bed and click
the "Set" to start the heating bed. 
4. Click "print" button, and the machine was entered the stage of preheating. 
5.Waiting. after the temperature rise to a specified temperature, then can begin
to print.
Method Two:SD card offline printing
Please put the slice file(generated well) to save to the SD Card catalogues,
(note:the file name cannot be Chinese)
Insert SD card in the card slot, press enter into the menu interface.
Select the SD Card
Press into the SD card interface, shown the file which is the slice file(g-code)
of deposited in the SD card. Rotate to choose the print documents, after
pressing, the machine will be printing automatically.
Chapter 4: Preparation before printing and common faults
The machine has been checked and tested and adjusted well before
shipping, but there maybe some little error due the vibration during the
delivery. Normally, we would send the printed samples together with the
machine, so you can take down the samples and directly start printing.
Preparation before printing
1. We should do the leveling work for first time use, left alone for long time or
after moving it. It does not just mean the leveling of heating board, but also
need to adjust the distance between control plate and the extruder within a
reasonable range, which normally for a thickness of an A4 paper. This leveling
operation would directly affect the performance of the first printing layer, then
may affect the whole quality of the printed item, since it is piled up based on
the first layer, forming a uniform model. So please make sure it is leveling
before working.
In the printer cabinets, there is a dismountable plate with tape, and it is the
printing platform. The tape would make it easier for us to separate the printed
sample with the plate. We can tear down the platform and replace the tape
when it is broken after long time use. And it is very easy to tear down the
platform, we just need to loose the 4 springs.
Generally, we can skip the rough adjustment and directly do the fine
adjustment. But it would be better to make the rough adjustment if the machine
has not been used for long time.
Attention: The leveling operation is very important, please make sure it is well
leveled before printing. Normally, the machine has been strictly checked and
tested before reaching customers. But it would lose balance due to the
uncertain factor and misoperation in the transportation. So it would be better if
you can adjust and confirm it again, we can operate like following manual.
Open software
,press “3 axis homing” (as this picture), then XYZ
axis would be back to original, ie. Reference point.
Turn off the switch, move the extruder to four corners along XYZ axis, and
separately adjust the springs to control the distance between the extruder and
plate(Theoretically it should be about the thickness of a piece of A4 paper) and
reconfirm for several times(Please be careful not to overexert in case the
extruder would damage the platform). And then separate the extruder and
plate by hand or software to a distance for at least 5cm.
2.Common fault and exclusion
No wire out from the nozzle
①Check if the extruder works in normal status② If the extruder blocked③If the
nozzle temperature set well
No wire for the first layer
①The extruder is too closed to the platform ②The ABS/PLA material has not
got into the nozzle③ If the temperature set correctly
The first layer can not stick to the platform
Distance between extruder and platform is too far
The tape on the platform is Kapton tape
Platform is not in levelling status
The surface of printed sample is foaming
The layer thickness is set to large
The printing speed is too fast
Temperature is set too low
The wire sender is abnormal
The diameter of the filament is not suitable
Setting of filament temperature
There is a little difference in suitable temperature for different filament. The
temperature range for PLA filament is 185℃±10℃, and 225℃±10℃ for
ABS type. So we should set the temperature according to the practical
abservation. If the printed samples can be broken very easily, it indicates that
the temperature is too low. If the wire is too thin, then the temperature is too
high. The PLA filament would turn into liquid status if the temperature is too
high. The printing speed and size of the models would also affect the filament
temperature setting. The filament can be fully preheat for lower speed, so it
may result in the wire-sending error if the temperature is set to high, and this is
the reason why we meet the error of no wire out when printing small models.
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