Geeetech Rostock 301 User manual

Geeetech Rostock 301 3D Printer
——USER MANUAL——

TERMS
Please be advised of the following terms (the “Terms”) regarding this User Manual (this “Manual”):
All information in this Manual is subject to change at any time without notice and is provided for
convenience purposes only. Geeetech reserves the right to modify or revise this Manual in its sole discretion
and at any time. You agree to be bound by any modifications and/or revisions. Contact the Geeetech Support
Team for up-to-date information.
DISCLAIMERS
Neither Geeetech nor any of our affiliates warrants the accuracy or completeness of the information,
products, or services provided by or through this Manual, which are provided “as is” and without any
express or implied warranties of any kind, including warranties of merchantability, fitness for a particular
purpose, or non-infringement of intellectual property. To the fullest extent permissible by the applicable law,
we hereby disclaim all liability for product defect or failure or for claims that are due to normal wear,
product misuse or abuse, product modification, improper product selection, noncompliance with any codes,
or misappropriation. To the fullest extent permissible by the applicable law, we hereby disclaim any and all
responsibility, risk, liability, and damages arising out of death or personal injury resulting from assembly or
operation of our products. Geeetech assumes no responsibility, nor will be liable, for any damages to, or any
viruses or malware that may infect, your computer, telecommunication equipment, or other property caused
by or arising from your downloading of any information or materials related to Geeetech products.

Content
TERMS...................................................................................................................................................................................... 2
DISCLAIMERS ........................................................................................................................................................................ 2
SAFETY INSTRUCTION...................................................................................................................................................... 4
ABOUT ROSTOCK 301......................................................................................................................................................... 1
1. Check Power Supply ............................................................................................................................................................. 4
2. Software Resources............................................................................................................................................................... 4
2.1 Repetier-Host............................................................................................................................................................... 4
2.3 Firmware resources ..................................................................................................................................................... 4
3 USB Driver Installation.......................................................................................................................................................... 5
USB Driver Installation for Win7 OS................................................................................................................................ 5
4. Set up Repetier Host.............................................................................................................................................................. 6
4.1 Create New Printer ...................................................................................................................................................... 7
4.2 Connection................................................................................................................................................................... 8
4.3 Printer........................................................................................................................................................................ 10
4.4 Extruder..................................................................................................................................................................... 10
4.5 Printer shape.............................................................................................................................................................. 11
4.6 Connect the Printer.................................................................................................................................................... 13
5. Function Testing.................................................................................................................................................................. 14
5.1 Repetier-Host Test ..................................................................................................................................................... 14
5.2 LCD Controller Test.................................................................................................................................................. 21
6. Build platform leveling........................................................................................................................................................ 30
7 Slic3r Setting........................................................................................................................................................................ 32
7.1 Printing Setting.......................................................................................................................................................... 34
7.2 Filament Setting......................................................................................................................................................... 35
7.3 Printer Setting............................................................................................................................................................ 36
7.4 Other parameters ....................................................................................................................................................... 39
8 Start Printing......................................................................................................................................................................... 45
8.1 Load the Printing Model............................................................................................................................................ 45
8.2 Slicing........................................................................................................................................................................ 46
8.3 Stand-alone Printing with SD card............................................................................................................................ 49
9. Introduction of Mixer.......................................................................................................................................................... 52
9.1 print with alternating color........................................................................................................................................ 55
9.2 Blending color........................................................................................................................................................... 55
9.3 Gradient color............................................................................................................................................................ 56
9.4 Other mix effect....................................................................................................................................................... 63
9. FAQ ..................................................................................................................................................................................... 70
9.1 Motors cannot work................................................................................................................................................... 70
9.2 Extruder cannot work/ extrusion not fluent............................................................................................................... 71
9.3 Printing quality optimization..................................................................................................................................... 71

SAFETY INSTRUCTION
Do read all the instructions and cautionary markings in this manual before assembling and operating your
Rostock 301.
Rostock 301 printers contain heated moving parts. Never reach inside the printer while it is in operation
or before it has cooled down.
Never leave your Rostock 301 printer unattended while powered on or printing.
Disconnect your Rostock 301 printer from the power supply and computer when not in use.
Do not print using materials that have not been approved by GEEETECH for use with the Rostock 301.
Only operate your Rostock 301 printer in a well-ventilated space away from moisture and heat sources
with a working smoke/fire alarm.

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ABOUT ROSTOCK 301
Rostock 301 makes solid, three-dimensional objects out of melted Filament such as PLA or ABS. First,
use software to translate 3D design files into instructions for the Rostock 301. Then transfer those
instructions to the Rostock 301 via USB drive, USB cable. The Rostock 301 will melt filament such as PLA
or ABS and squeeze it out onto the build plate in thin lines to build your object layer by layer. This method
of 3D printing is called fused deposition modeling (FDM).
Rostock 301 is an affordable desktop 3D printer for tech enthusiasts, serious hobbyists and educators.
This printer provides you with excellent printability and triple-color, mix color capability, offering an
intuitive 3D printing experience.
Rostock 301 is a perfect combination of the delta type construction and the 3-in-1-out mix color 3D
printing hotend. Delta type construction features faster printing speed and high printing accuracy; the
3-in-1-out mix color 3D printing hotend gives a rich mixture of color combination of the printing object.
Rostock 301 maintains DIY property, with which you can unleash your creativity to refit or modify it as
you like. This kit is just the beginning; you can get more out of it.

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1. Check Power Supply
Rostock 301 uses DC12V, 29A power supply, choose 110V or 220V according to national power using
standard. Please make sure that the voltage of the power supply conforms to current national power using
standard.
2. Software Resources
2.1 Repetier-Host
The Repetier-Host is a simple to use host software, which is be compatible with most firmware around. You
can add and position your STL files on the simulated print bed and slice them all together. For slicing you
can use the built-in Slic3r slicer. Just call "Slice & Load" and the job gets delegated to the current slicer,
showing its output in the log window.
Download the Repetier host V 1.6.0 here.
For detailed information of Repetier Host please refer to our wiki.
For detailed using methods of the slicing software, slic3r, which comes with Repetier Host, please also refer
to our wiki.
2.3 Firmware resources
Rostock 301 uses GTM32 control board; you need to use STM32 ST-LINK Utility to upload/refresh the
firmware.

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Download the STM32 ST-LINK Utility here.
Download the firmware here.
How to upload the firmware?
3 USB Driver Installation
USB Driver Installation for Win7 OS
Power the Rostock 301 up and connect it to computer with the USB cable, the driver will be installed
automatically. After installation, please enter Device manager and find the USB Serial Port which is the
communication port for the printer and computer.
If the driver cannot be automatically installed, please download the USB driver here and manually install it.

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4. Set up Repetier Host
The next step should be to configure your printer so you can connect your computer with the host. Open
Repetier Host.
When you start Repetier Host for the first time, you need to set up parameters for Rostock 301. Click the
Printer Settings on the top right corner, you will be presented with the following window.

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4.1 Create New Printer
At the top you see a drop down box, with the currently selected printer. At the start you have only the
default printer. To create a new printer you only need to change the printer name and press “Apply”.
The new printer will start with the same settings as the last selected printer.

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There are six tags in Printer settings in total. Detailed configurations of the 4 relevant tags are as follow.
4.2 Connection
In this first tab, you set how to connect with your printer. In “Port”you select the port, where your
printer is connected. At the opening of the window, all available ports were scanned and added to the list.
If you connect your printer when this menu is already open, click “Refresh Ports”to detect the new
port. Select the right one. Then select the baud rate entered into the firmware
Choose right Port and Baud Rate. For other parameters please leave them as default, and click Apply.

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Port：Get the printer connected to the port of computer, which is corresponding to the USB Serial Port
in the Device manager.
Baud Rate: Corresponding to the Baud Rate in firmware. Generally it is set as 115200.

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4.3 Printer
The second tab defines important behavior you want. The Travel feed rate and Z-axis feed rate are used,
when you move the extruder with the manual controls. The temperatures are set in the manual controls as
start values. You can change them there any time.
Set the parameters as shown in the picture
Travel Feed Rate: 3000 mm/min
Z-axis Feed Rate: 100mm/min
We suggest you to cancel the option of Go to Park Position after Job/Kill, or it may cause that the print
head impacts the printed model when it moves to starting position after finishing printing.
4.4 Extruder
In the “Extruder”tab you can define the numbers of extruder, the max temperature that are shown in the

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manual control. The max volume per second defines the maximum amount of filament in mm³, the extruder
can melt per second.
Number of the extruder: 3
Number of the extruder: 0.4mm
*We use the 3-in-1-out hot end, so we need to check the “printer as Mixing extruder”
4.5 Printer shape
The “Printer Shape”tab defines your printer shape, or to be more exact the shape of your build area. The

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host will use this to limit your moves and to check, if your models fit onto the print bed. You can also define
the position of the x and y end stop.
Recommended settings:
Printer type: Rostock printer
Home X：0Home Y：0Home Z：Max
Printable Radius:100mm
Printable Height:220mm
(In case the motor direction is wrong, we’d better set the print height as 220mm to avoid clash of the
hotend to the platform)
So far the setting of Rostock 301 is finished.

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4.6 Connect the Printer
After setting, click the connect button on the top left corner of main interface. When the button turns
green, the connection is successful.

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5. Function Testing
The firmware of Rostock 301 is already uploaded based on Windows 7 operating system, and we have done
debugging to make sure that every part of it can work normally. However, there may be unpredictable
factors during transportation . Please do the following simple test before using it.
5.1 Repetier-Host Test
5.1.1 Motor Test
Before the test, manually place the carriage of X / Y / Z axis at the intermediate position of each axis to
avoid accidental collision during the test. There is emergency stop button on the top right corner , or you
can cut off the power directly if anything went wrong. Be prepared for emergency stop.
Open Repetier host and connect the printer. Turn on the power supply. Connect the printer.
Click Home button , then the three axes will move towards the endstop in turn . After they touch the
endstop they will move back for a short distance and then stop the movement.

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Right position of Homing:

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Note: the origin point is the corner of the platform when printing. So when the printer is at home
position, the coordinates of X/Y axis are: X=0mm, Y=0mm，Z=220mm. As a result: