Mingda MD Series User manual

User Guide
MD Industrial 3D Printer
MINGDA TECHNOLOGY CO.,LTD

Legal Statement
Shenzhen MINGDA Technology Co., Ltd, all rights
reserved. It won't be informed if the information in this
article was changed in the future. MINGDA doesn't
made any type of guarantee about this information,
including but not limited to marketability and
special-purpose applicability of implied warranties.
MIINGDA Company won't be responsible for the
incidental or indirect damages which was caused by the
error of this text, or due to providing, presentation or
using of this information.
MIGNDA is a registered trademark of Shenzhen MINGDA
Technology Co., Ltd. The WindowsXP, WindowsVista and
Windows7, Windows8 is the registrar of their respective
owners.

Contents
◎Legal Statement
◎Contents
1Brief Introduction................................................................................................................. 1
User-guide instructions ................................................................................................................. 1
Learn more information................................................................................................................. 1
Safety precautions ......................................................................................................................... 1
2Overview ............................................................................................................................. 2
View of 3D Printer.......................................................................................................................... 2
Tool box accessories ...................................................................................................................... 3
3 Installation........................................................................................................................... 3
Take Out the Machine.................................................................................................................... 3
Install the Material Shelf................................................................................................................ 3
Plugged in ...................................................................................................................................... 3
Turn on the power switch.............................................................................................................. 3
Dismantle the Model ..................................................................................................................... 3
Paste the Masking Tape ................................................................................................................. 4
Install the Material ( for example, PLA materials ) ........................................................................ 4
4Manual Calibration............................................................................................................... 5
Fine Tune the Printing Platform..................................................................................................... 5
Adjusting the overall height of the Printing Platform.................................................................... 5
Printing the Test Files..................................................................................................................... 5
5Printing Operation................................................................................................................ 6
Display panel.................................................................................................................................. 6
6 Software .............................................................................................................................. 7
Download Printing Software.......................................................................................................... 7
Install the Printing Software ( for example, Cura ) ...................................................................... 7
Create STL File................................................................................................................................ 8
Cura Overview ............................................................................................................................... 9
Open STL File with Cura ............................................................................................................... 11
Model rotation, scaling, mirroring with Cura .............................................................................. 12
Transfer stl Model into gcode Document with Cura.................................................................... 13
Printing Parts ............................................................................................................................... 14
Pause and Continue to Print ........................................................................................................ 14
Power Outages............................................................................................................................. 14
7 General Maintenance ..........................................................................................................14
Daily Preventive Maintenance..................................................................................................... 14
500 hours maintenance ............................................................................................................... 15
1000 hours maintenance............................................................................................................. 15
8 Trouble Removal .................................................................................................................15
9Support...............................................................................................................................16
Customer Support....................................................................................................................... 16
Working Computer Specifications .............................................................................................. 16
MINGDA Limited Warranty Statement ....................................................................................... 16
10 Quality Assurance...................................................................................................................... 16

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MINGDA TECHNOLOGY CO.,LTD
www.md-3d.com
1 Brief Introduction
MD Series Industrial 3D Printers adhere to the design concept of the simple to the extreme. It can print
product quickly and easily, even if you've never used a 3D Printer.
The printer prints the model with PLA or ABS, so the products will be strong and durable. You can make drilling,
tapping, grinding and painting on the PLA or ABS models. MD Series 3D Printers combine proprietary hardware,
software and materials technologies creatively.
Welcome to a new world of 3D printing!
User-Guide Instructions
This User Guide has been carefully organized into "Installation", "Operation", "Maintenance" and
"Troubleshooting" sections for client to read and understand. Be sure to read the sections carefully to get the best
use of your 3D printer.
Learn More Information
SD card provides the electronic user guide. This guide provides information as following topics:
1. troubleshooting information
2. important safety statements and regulatory information
3. Printing supplies related information
4. Detailed instructions for use
You can also find more information on the official website.
http://www.md-3d.com http://www.3dMINGDA.com
Safety Precautions
The following precautions ensure that the customer uses the printer correctly and protects the printer from
damage. Please always follow these precautions.
1. Use the specified power supply voltage. Do not connect multiple devices to the printer's power outlet to
avoid overload.
2. Make sure the printer is properly grounded, Or it may cause electric shock, fire or electromagnetic
interference.
3. Contact your after-sales or local service before disassembling or repairing the printer by yourself. Check the
"Support" section in the User Guide.
4. It is recommended to use the power cord that came with the printer. Do not damage, cut or repair the
power cord. Damaged power cords present a risk of fire or electric shock. Please replace the damaged power cord
with a quality-certified power cord. Do not allow metal or liquid to come into the printer and contact with the
internal parts of the printer. It may cause fire, electric shock or other serious accident.
5. Turn off the printer and unplug the power cord from the electrical outlet under the following conditions:
1) The printer emits smoke or emits an abnormal smell.
2) The printer emits abnormal noise that has never occurred during normal operation.
3) Metal or liquid (not required for cleaning or routine maintenance) come into the printer.
4) Thunderstorm weather.
5) Power off
This guide contains the following categories.
Note: potentially dangerous situation, if not avoided, may result in minor or moderate injury.
Warning: potentially dangerous situation, if not avoided, may result in serious injury.
High temperature surface: The high temperature surface symbol indicates the presence of high temperature
equipment. When working near hot parts, be careful and wear safety gloves.
Gloves: When performing some maintenance procedures, the machine may be hot, so need to use gloves to
avoid burns.
Safety glasses: Please wear safety glasses to avoid eye injury.
Lifting hazard: Two or more people should cooperate when lifting, so as not to cause serious injury.
Recovery: Use the correct method for recovering materials and packaging materials.

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ESD: Use standard electrostatic discharge (ESD) precautions when working with or near electronic
components.
2 Overview
The printing process of the MD series 3D printer is as follows: the slicing software CURA convert the .stl
document into a .gcode document, and 3D printer read the .gcode document and print the raw material into a 3D
product.
Cura is a slicing software that runs on Windows XP, Windows Vista, Windows 7, Windows 8, or Windows 10.
The product size and print size of MD series 3D printer are as follows. Each filament holder can hold 1kg of
printed filament, 1 kg filament can continue to print for about 120 hours, you can also add a second roll of filament
for continuous printing.
Model
Product Size (W×D×H)mm
Printing Size
(W×D×H)mm
MD-4H
550×410×635
300×200×200
MD-5H
590×440×980
300×200×500
MD-6H
685×495×995
400×300×500
MD-666
930 ×860×1165
600 ×600×600
MD Series Industrial 3D Printers have UPS and Filament sensor, which can greatly save the client's losses.
UPS: During printing, if power off, the battery in the chassis will be activated. The machine will save the data
and reset the print head to the origin and shut down. After power-on, press the power button to continue the
unfinished print job according to the screen prompt.
Filament sensor: If the filament is not detected when printing, the machine will automatically pause printing,
install new filament, and click the Continue button on the screen to continue printing.
View of 3D Printer
Filament holder
Printing head
Touching screen
power switch
LED switch
USB port
SD card port
Platform
socket

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Tool box accessories
3Installation
Take Out the Machine
It may need two people to take out the machine with
the buckles beside the machine.
Dismantle the Model
Warm prompt : The MD series 3D printer display is a full touch resistance screen, click to enter the content
Install the Material Shelf
Note: Shelf pole and screws are in the tool box
Plugged in
Turn on the power switch

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item. We recommend to use your fingernails and do not press hard on the screen.
1. Set down the Hot bed: choose "Z" axis , then click move
button , fell the hot bed to a suitable height.
2. Take the model: Shovel the model down with the scraper knife
gently.
Note: If it is not easy to remove the model, click on the hot bed
icon , enter 80, click OK, after two minutes, the hot bed will
automatically heat up to 80 °C and then gently shovel down.
Paste the Masking Tape
Remove the damaged tape and attach a new tape. Be careful not to overlap and overlap too much (if the tape
is not damaged, it can be reused)
Install the filament (Take PLA filament as an example )
1. Hung filament on the shelf, and insert the filament through the filament sensor.
2. Press the tab on the extruder and insert the filament into the extruder feed port.
3.Click the printing head button , click "PLA", default input 200, that it turns red means beginning
heating ,and the head temperature will automatically rise to 200°C
4. When the temperature rises to 200°C, press shrapnel and
push the filament into the extruder, if the filament is melted and
flow out from nozzle, that means the filament is installed
successfully（As shown in figure b）. you can also click on
the screen to feed the filament.

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4Manual Calibration
Note: before calibration, you need to dismantle the model and put on
new tapes.
Enter the adjust platform interface
1. Choose "Z" axis , and click reset button to raise the hot bed
to the highest degree.
Fine Tune the Printing Platform
Adjusting the overall height of the Printing Platform
If you want to add a glass or other material plate on a hot bed, you need to move the limit block position up,
and adjust the platform level again.
Printing the Test Files
Click on the SD card icon, choose a gcode file which you want and print.
Tip: You can fine-tune the platform during the first layer of printing. When printing the first layer, if the
filament is not stuck on the hot bed, you need to adjust the nuts counterclockwise; if the tape is scraped, adjust
nuts clockwise.
The best printing condition is, the filaments stick on the hot bed and form a flat strip instead of strips or flats.
1. Click Reset to raise the platform
position to the highest position. Click
to unlock the motor. then you can
gently push the print head to the four
corners and the middle position of
the platform, observe the gap
between the nozzle and the hot bed
at any time.
2. The gap requirement is about 0.1mm. You can insert an A4 paper
between the nozzle and the printing platform, and push the
printing head to the four corners and the center of the platform,
at the same time adjust the four fine-tuning nuts to ensure that
the paper can be moved with resistance but not scratched.

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5Printing Operation
Display Panel
○
1 XYZ axis coordinate values displayed in real time
○
2 Head preheating: press the icon, input a number and click OK, it will begin to heat while the icon turns
red. Click again to cancel heating.
○
3 Extrusion and Retraction: click icon to feed filament, The print head 2 can only be used in a two-color
machine.
Note: The icon it means retraction, If it is used improperly, it will cause the plug. We recommended
customer not to use it.
Material extrusion length and speed: can be adjusted manually.
Length and speed of extrusion: It can be manual adjusted.
○
4 Bed preheating: press the icon, input a number and click OK, it will begin to heat while the icon turns
red. Click again to cancel heating.
○
5 XYZ axis: It will show red border when clicking the icon ,then you can click to move the head or bed.
○
6 Length and speed of moving: moving settings of head, also it can be manual adjusted.
○
7 Moving: Icon means moving towards zero axis, icon means moving outwards from zero axis. Zero
axis is located in upper left corner of front print area.
When moving , choose X、Y or Z axis first, then click icon or to move.
○
8 Unlock the motors: If you click, the motors will be unlocked, then you can push printing head by hand.
You can stop moving by click button at any time.
○
9 Reset: When choosing X、Y or Z axis, you can press icon to reset that axis you choose. If there is not any
1
2
4
5
8
9
12
6
10
7
3
13
14
11

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axis to be chosen, it will reset XYZ axis in turn.
○
10 SD Card: Click into SD card, select file to print.
You can pause or stop printing at ay time. You can also adjust the temperature of printing head and
bed, fan speed and printing speed rate.
Attention: It may need several seconds to preheat before printing.
○
11 Fan Control: Click on the input speed to control the cooling fan speed.
○
12 Bit screen: Click to close the screen, touch the screen again to open the screen.
○
13 reset the settings of machine
○
14 Shutdown: Click here to shut down
6 Software
Download Slicing Software
MD series 3D printers can support Cura, RepetierHost, Simplify 3D and other slicing software for printing. You
can get the latest installation software in two ways:
1. Install from the included SD card
2. Download directly from MINGDA official website
http://www.md-3d.com/index.php?s=/products/software.html
Install the Printing Software (take Cura as an example) )
1. Double click Cura_XX.XX.exe to install
2. Install the software as follows, all installed by default.