Geeetech Delta Rostock mini

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1 Geeetech Delta Rostock mini.jpg

The Rostock mini made by Geeetech is a delta 3D printer based on the modified design of the original Rostock created by Johann. The printer is designed to have a smaller build volume allowing for a smaller, more compact, portable, and desktop friendly version of the delta RepRap design. Using OpenSCAD, the parametric nature of the design files allows for print surfaces to be configured from as small as the default 152x152 mm (6x6 inches) all the way to 300x300 mm (12x12 inches) or more. Further, construction parameters such as the length of the drive belts, diagonal rods, and a laser cuttable frame, as well as the firmware parameters such as diagonal rod length and delta radius are all automatically calculated based on the size of the specified print surface.


1. Mini- size & light weight, more compact & portable compared with other Delta RepRap design.

2. Fixed printing platform, parallel kinematic XYZ axes with low accumulated error, ensuring high precision & speed of printing.

3. Bakelite print platform with treatment of sand blast and anodization; polished oxidized high borosilicate tempered glass. Compared with aluminum sheet and acrylic sheet, the has advantages of high mechanical strength, good insulation, good heat resistance and good corrosion resistance

Main parameters

Physical Dimensions & Weight

Machine size: 280mm*340mm*700mm (L/W/H)

Packing size: 510*410*260mm (L/W/H)

Weight: 9000g

Printing Specifications

Printing Technology: Fused Filament Fabrication,FFF

Operating system: Windows/Mac/Linux

Slicing software: Cura / Repetier

Control software: Repetier-Host

Data format: all 3D files converted into STL file

Layer Resolution: 0.05mm

Build Volume: 150 x 150 x 180mm

Filament Type: ABS/ PLA (ABS used only when hot bed is equipped)

Filament Diameter : 1.75mm/3mm

Nozzle Diameter: 0.3mm, 0.35mm, 0.4mm & 0.5mm optional

Location accuracy: 0.1mm


Max Heated Bed Temp: 110 ℃

Max Extruder Temp: 240 ℃


Physical structure: Delta

Frame: AISI304 stainless steel optical axis with Bakelite of 6mm thickness

Build platform: tempered glass with 198mm diameter and 3mm thickness

Movement mode: printing platform fixed; X, Y and Z axes all subject to parallel movement

Extrusion system: Bowden feed

Motors: nema17, 2.5A


Input AC 220V/2.4A(110V/4.8A),Output DC 12V/29A

Connectivity:USB or SD card

Safety Instructions

We recommend the following practice instructions for the safe and effective use of our printers. Failure to follow these practice instructions may (i) degrade your printer’s performance, (ii) cause injury and/or damage, and (iii) disqualify you from customer support. Please ensure that you have read and understand all practice instructions before using your Delta Rostock mini printer for the first time. You can contact the Delta Rostock mini Customer Support Team with any questions about the practice instructions at our [forum].


  • Never reach inside your Delta Rostock mini printer when it is turned on. Moving parts can cut or pinch you, and several parts reach high temperatures that can cause burns and other injuries.
  • Always allow your Delta Rostock mini printer to cool down for at least 5 minutes before you touch any internal part or remove a printed object.
  • Never leave your Delta Rostock mini printer unattended while printing or powered on.
  • Always turn off your Delta Rostock mini printer and disconnect it from your computer when not in use.
  • Never attempt to print using any materials that have not been approved by Delta Rostock mini.
  • Keep the nozzle tip at least two inches away from the heated build platform anytime you are not running a print job.
  • Never operate your Delta Rostock mini printer if it appears damaged.
  • In case of an emergency or malfunction, immediately disconnect your Delta Rostock mini printer from the power outlet and computer.


  • Always operate your Delta Rostock mini printer in an open, well-ventilated area to allow potentially irritating fumes to dissipate.
  • Never operate your Delta Rostock mini printer outdoors, near open windows, or anywhere where it may be exposed to water or moisture.
  • Always place your Delta Rostock mini printer on a flat and sturdy surface to avoid power interruptions and deformities in your prints.
  • Never place objects on or above your Delta Rostock mini printer or power supply.
  • Always have a working fire and smoke alarm in the same room as your Delta Rostock mini printer.
  • Never place your Delta Rostock mini printer near open flames, heat sources, or flammable materials.


To avoid printing interruptions, disable your screensaver, sleep, and hibernate functions on your computer.

  • Make sure the heating plate and extruder are not heated when starting software.


  • Plug your computer and Delta Rostock mini printer into the same power outlet for best performance.
  • We recommend plugging your Delta Rostock mini printer into a surge protector with a circuit breaker.

Never attempt to open or fix your power supply. If you believe your power supply is not working properly, contact us asap.

  • Only use the power supply that was provided with your Delta Rostock mini printer.
  • Do not plug your Delta Rostock mini printer into the same outlet as power hungry devices such as air conditioners, space heaters, or other large appliances.


Delta Rostock mini printers are tested for performance and safety before they leave the factory. Delta Rostock mini cannot guarantee the performance or safety of printers that have been modified by users.



Install the drivers and software

Install the drivers

Installing Drivers Before printing, you’ll need to install drivers. The kind of driver that a Delta Rostock minirequires in order to operate properly is called a USB Serial Driver. A USB Serial Driver is software that establishes a COM port.

Plug the USB into a USB port on your computer. Windows Update should automatically find and install the drivers. You’re done with installing the drivers!

Windows 8

When you attempt to install the unsigned 3rd party driver on Windows 8, you will most likely not be able to install because the file is not digitally signed. To get around this restriction, you must temporarily remove this restriction by following the instructions here .

Once you have followed the directions to disable driver signature enforcement, download the driver and click to install. This is only a temporary change, however, and restarting your computer after you have installed the driver will return your computer to its normal state.

Note that this involves restarting your computer, so make sure to close out all other windows. You may want to print out these instructions so you can refer to them while your computer is restarting.

Windows Manual Install

Note: In some cases the drivers will not install on their own. The drivers for Windows can be found in the following link: Media:Serial

If the driver was not automatically installed, you may see this screen:


In this case, a. Click “Change Settings…” b. Select “Install driver software from Windows Update”. c. Click “Save Changes”. The FTDI drivers should now install successfully.


Attention: For those having difficulty selecting your COM port

If you have installed the USB serial driver successfully and you are still not able to connenct to your printer in Repetier Host, then windows has not recognized the newly installed driver. In Repetier Host, you may even notice an error message that is similar to this one:

Serial com error:System.IO.Ports.SerialErrorReceivedEventArgs

In some situations, a computer running windows will not automatically recognize a newly installed Serial driver. This means that you will have to update your newly installed driver manually.

To manually update the driver, you will first need to plug the USB cable into your printer and attache the other end directly to one of your computer’s USB ports. Now, enter the ‘Device Manager’ in Windows and navigate to the hardware category called Ports (COM & LPT) and then left click on it once. You should notice the Ports category expand to reveal a Sub-Category called USB Serial (Communication Class, Abstract Control Model) (COM X); where X is the COM port number. You should be looking for that COM port number in Repetier Host after this procedure is completed; which can be found in “Printer Settings.”


You will need to right click on the USB Serial Sub-class and select proprties. In the drivers tab you will find a selection to update drivers, click on Update Drivers to access the next menu.

Now that you have selected which driver to update, you will have to tell Windows where the “updated” driver can be found. You should be presented with two options. Select “Browse my computer for driver software” to locate and install the driver software manually.

Install 4.jpg

Next, you will be greeted by a menu that allows you to “Browse for driver software on your computer” You will be presented with two choices, select “Let me pick from a list of device drivers on my computer.” Now select the Serial port device and proceed with the installation.

Install 5.jpg

That is pretty much all there is to it. You will then see an installation indicator bar.

Install 6.jpg

Once the installation is complete you will be notified that “Windows has successfully updated your driver software.” You will be prompted to restart your computer; you should do so.

Install 7.jpg

Once your computer restarts, try selecting the appropriate COM port and baud rate in Repetier Host and then connect.

Install Software

we will take windows OS as an example.

To install all required software by Delta Rostock mini, please follow the steps provided below.

1) Download and install: RepetierGEtechSetup.exe

step 1,start the installer,choose the display language. step 2,click next to continue


step3,select the destination where you would like to install the RepetierGEtechSetup.


step4,select start menu folder and create a shortcut, click next to continue.


step 5,get ready to install. Click install.

Step 5.png

step 6,wait about half a minute while installing. The green bar will show you the rate.


step 7,set up has finished the installing, you can choose to launch it immediately or exit out.


2) Plug the power cord into a wall outlet and the USB cable into a USB port on your computer. Windows should detect your motherboard and assign the appropriate driver.

3) Open Repetier Host and Connect to your Delta Rostock mini!

Click on the Manual Controls Tab and click in a direction X or Y to test your connection. If you are having difficulty connecting, please review the following supportive documentation: Installing Drivers and How to connect.

Please note that if you have difficulty connecting, there might have been an issue with the installation process. Ensure that the following have been installed:

Download and install the Serial Driver.

Download and install Microsoft .netFrameWork 3.5

How To Connect

1. Plug the USB port into your Delta Rostock mini and the other end into your computer.

Do not be alarmed if the standard messages do not appear. Because of the Delta Rostock mini’s drivers, it may show up as a generic USB device.

2. Power on the Delta Rostock mini. You can see the LED lights and fan come to life! You may be able to hear the motors idling.

3. Open Repetier Host and ensure that you have a valid port selected for communications. To do this simply click “Printer Settings” in the upper right-hand corner to bring up the printer settings menu.


4,Select GEEEtech Rostock mini in “Printer”

2choose printer.png

5,Select the corresponding COM port, click OK to continue.


6. Hit "connect" in the upper left-hand corner, select GEEEtech Rostock mini. You should see the details of the connection in the console window in the bottom section of the screen.

4connection (1).png

7. In the right panel, click on the "Manual Control" tab.

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8. Scroll down and click both heat extruder and heat printbed buttons to activate your heaters. You will know they are on if they turn a bright blue.

The heat will gradually rise, as you will see from the status bar on the bottom of the window. The extruder should be set to 195° and the bed should be set to 95°.


7. Once full heat has been achieved do a few quick tests. Hit the X+/X- arrows to ensure that movement is possible.

Hit the extrude button, with the down arrow, in the Extruder section to ensure extrusion is possible.



Here is a brif assembly manual for you to refer, welcome to add a more detailed one.

Leveling The Print Bed

Geeetech mini htbed 1.jpg

Getting the bed level in relation to the X and Y axis is very important for getting prints to stick well and is one of the first steps you should do when receiving your Delta . The first layer might have the right amount of squish in one area, but if another part of the bed is too low, that part of the print is more likely to come unstuck and begin to warp. The level is adjusted with the spring loaded screws, two at the front and one at the back. If you are using the standard kapton tape on the build platform and not a sheet of glass, you will need to poke holes in the tape in order to turn the leveling screws or print some thumbscrews and use a little super glue to screw them onto the bottom of the leveling screws. We suggest using the thumbscrew route so that you do not have to damage your kapton tape.

Leveling the bed with a piece of paper

You can check the level of the heated platform by using a piece of paper to check the gap under the nozzle. It’s best to do this with the platform heated to account for any change due to expansion.

Put the paper under the nozzle near one of the front screws and raise the bed .1mm at a time using the manual controls in the software interface while sliding the paper back and forth. Stop when you feel the nozzle start to grab a little bit.

Move the nozzle to the other front screw and adjust the screw until you get the same amount of friction as you felt with the first one. Then adjust the back screw the same way. Once you have adjusted each of the three screws, go back and check each one again, since adjusting one screw can affect another. You shouldn’t need to go around the bed more than twice.

Leveling the bed with a dial indicator

The best way to level the bed is with a dial indicator. This uses a spring loaded plunger to detect changes in distance. You can mount one the the front of the extruder, and zero the reading at one corner of the bed. The watch for the readout to change as you move it around the bed and adjust the screws accordingly. If the fit is too loose for the tab on your gauge, you can use a few pieces of tape to thicken it up.

Belt Tensioning

There are 3 belts to be adjusted on your Delta Rostock mini. These steps will guide you through adjusted them.


2.5 mm hex driver

1.5 mm hex driver


1. As always, before trying to work on any part of your Delta Rostock mini, make sure that both the bed and extruder are turned off to prevent burns. Lowering the bed will also keep it out of the way so that you can access all the necessary parts more easily.

2. To test the belts, you need to be able to move the belts. This requires the motors to be turned off. Go to the Manual Control tab in Repetier Host and click the stop motors button. You should now be able to move the extruder around without much resistance.

3. Pull the extruder forward and out of your way.

4. Using the 2.5 mm hex driver, loosen the four 4 screws on the left side of your printer. This will allow the Y motor to move up and down. Note that you do not need to completely remove these screws as there is no need to remove this motor from the printer.

5. Using your hand, lift the Y motor enough to take the short loop of belt off the pulley attached to the motor. This belt is the source of most trouble with printing circles. If this is the only belt you wish to adjust, you can skip to step 11.

6. Loosen the screws on the inside of the pulleys on the left and right end of the back horizontal rod using your 1.5 mm hex driver. Make sure the back horizontal rod is centered by feeling the bearings that hold it on either side of the printer. You want to make sure it is even.

7. Push the extruder back and forwards. This movement should naturally align the belts, so that the back rod should not be moving side to side.

8. Once the belts are aligned, you can tighten the pulleys again with the 1.5 mm hex driver. The screws should be tight enough to hold on to the rod, but be careful not to strip the screws.

9. Put the short loop of belt back on the Y motor pulley by again lifting the motor up.

10. Make sure the two pulleys that the short loop of belt is on are aligned. If they are not, you can loosen the screw on the pulley on the back rod and carefully nudge it into place. Once it is aligned with the pulley on the y motor, tighten the screw.

11. Push the Y motor down firmly to draw the belt taut, and tighten the screws on the left side of the printer one-by-one to hold the motor in place.

12. Check that you can move the extruder back and forth. It may be a little resistant.

13. Slide the extruder forward so you can check the tension of the bottom belts behind the y carriages. These belts should be not too tight but not too loose. The most important thing is that they are of roughly equal tension.

14. You can tighten or loosen the bottom belts by adjusting the screw on the back of the y carriages with a 2.5 mm hex driver.

15. Now slide the extruder back to check the tension of the bottom belts in front of the y carriages. Again, these belts should be not too tight and not too loose. Using a 2.5 mm hex driver on the screws on the front of the y carriages, adjust the belts so that they are of roughly equal tension. 16. If the belts are still not moving smoothly, there may be a problem with the pulley alignment on the back horizontal rod. Using your 1.5 mm hex driver, loosen the screw on the pulleys so that you can move them into alignment, then tighten to hold them in place. This step can take some trial and error until you get everything properly aligned.

How to control on LCD

1.How to print from LCD

1)If you do not set the temperature of extruder and hot bed in g-code, you should manually heat up extruder and hotbed to proper temperature before printing.
2)If you do not set letting all the axes auto home in g-code, you should manually let all the axes auto home first.
Press the button>"Print from SD">Choose the file you want to print and press button.

Print from SD1.png
Print from SD2.png

2.How to let all the axes auto home

Press button on LCD> “Prepare”>“Auto home”

LCD auto home.png

3.How to move the axis and extruder motor separately

Press the button>”Prepare”>”Move axis”>”Move 10mm/1mm/0.1mm”>”Move X/Y/Z/extruder”

Note: The extruder motor can not move unless the temperature is more than 180 degrees.
LCD prepare.png
LCD moveAxis1.png
LCD moveAxis2.png
LCD moveAxis3.png

4.What if you can not move the axis with you hand
Press the button>“Prepare”>”Disable steppers”
LCD prepare.png
LCD disable.png

5.How to set the temperature of extruder
Press the button>“Control”>”Temperature”>”Nozzle”>Rotate the button>Press the button
LCD control.png
LCD temperature.png
LCD nozzle1.png
LCD nozzle2.png

6.How to set the temperature of hot bed
“Control”>”Temperature”>”Bed”>Rotate the button
LCD control.png
LCD temperature.png
LCD bed1.png
LCD bed2.png


1.Fixing Extruder Jams and Flow Problems

2.How to unblock a nozzle

3.FAQs OF 3D printing

Where to get

1,geeetech official oline store