To facilitate rapid prototyping the department is equipped with 5 extrusion based 3D printers The 3D printers prints with PLA filament suitable for making small moving parts, thin walls and smooth surfaces. The printed models can be painted, drilled, machined, used for vacuum forming or as a negative shell (mould) for plaster or rubber casting. Machine specs:

  • Volume: 210 x 210 x 200 mm
  • Net Build Size: 180 x 180 x 180 mm.
  • Model material: PLA
  • Support material: Same as print material
  • Accuracy: 0.1 mm.
  • Layer resolution in the z-axis: 40 microns (= 0.040 mm.)

  Using the 3D printer To use the 3D printers you need to contact Peter Skotte or Jens Munk, who will assist you in preparing your 3D models for printing and start up the printing process for you. When you have finished 1 print with supervision, you can use the Ultimaker Printers on you own. We have made a short and simple guide for you to follow in preparing your files for print:


For the Ultimaker 2 Extended, we recommend our free Cura software to prepare your 3D print files. Cura quickly and accurately converts 3D models into 3D print files within seconds, showing you a preview of the print so you can be sure everything is as you would like it to be.


After downloading, open the installer and run the installation wizard to complete the installation. When you open up Cura for the first time, you will be asked to select the 3D printer that you have; select the Ultimaker 2 Extended. No other configuration is required and you can directly start using Cura.

Using Cura

The basic process of converting a 3D model to a print file in Cura is described below.

  • Load a 3D model (STL, OBJ, DAE or AMF file) into Cura via the “Load” button.
  • Choose your desired settings and wait for Cura to slice the model.
  • When Cura has converted the file you can save the print file (GCode) via the “Save” button. If the SD card has been inserted it will directly save the file to the SD card.
  • Remove the SD card from your computer – make sure to safely remove it – and insert it in your Ultimaker 2 Extended to start printing.

When using Cura for the first time you will see the “Simple” setup. This is perfect for beginners, but when you’re a more experienced user and want to have more control over the print settings you can also switch to the “Advanced” mode.

Updating firmware

Regularly a new Cura version is released, including a new firmware version as well. Make sure to install the latest version of Cura and firmware once available in order to stay up to date. The latest version of Cura can always be found at the Software page.

In earlier versions glue was used to keep a better tack between the printed object and the bed.

This is not nessecary any longer, because we have installed “BuildTak“. Its a bonded adhesive that keeps the object on the build plate wihout and secondary bond (like glue)

When removing the print, please be carefull NOT to break the buildtak surface. Always keep the spatular flat and right on the surface.

Changing filament

If you want to switch between different (colors of) materials you first need to unload the filament that is already in the Ultimaker 2 Extended, after which you can insert the new filament. 

Remove old filament

Removing the filament can simply be done by following the steps below.

  • Access the material change menu on your Ultimaker 2 Extended by going to “Material” > “Change”.
  • Wait a minute while the print head is heating up. By heating it up we ensure that the filament is being melted before retracting it from the nozzle.
  • When the nozzle is hot, the Ultimaker 2 Extended will automatically start turning the feeder wheel, through which the filament will be rewind completely. If the filament doesn’t come out of the feeder completely you can simply pull it out by hand.


Note: Make sure there are no small pieces of filament left in the feeder before inserting new material. For removing small pieces of filament you can use tweezers. For easier access you can loosen the bowden tube at the top of the feeder by removing the clamp clip, pressing down the tube coupling collet and pulling out the bowden tube.

Load new filament

After removing the filament you can start loading the new filament in the same way as done during the first use of your Ultimaker 2 Extended. Make sure the old spool of filament is removed from the spool holder and the new one is placed.

  • Take the end of the filament, insert it into the bottom of the material feeder and push it until the filament is being grabbed by the knurled wheel. This may require some force. Once the knurled wheel has grabbed the filament, it will slowly move it further into the bowden tube.
  • Wait till the filament reaches the first black bowden tube clip and then press the button to continue. The Ultimaker 2 Extended will automatically load the filament through the bowden tube, into the print head.

Now you just have to wait until the filament is coming out of the nozzle. You may notice a ticking sound at the feeder; this is nothing to worry about. If necessary you can manually push the filament in order to get it through the nozzle with a bit more force.



When the printing process is done the workshop staff will assist you in how to remove the support material. What can the Ultimaker “make” ultimakers

Booking and prices

The 3D printers are booked in the ADMT booking system you can see the availability of the 3D printers, and then make your own booking. If you’re a first time user of the booking system you need to register before being able to see the bookings. When registering it is very important that all the “required fields” are filled in correctly (the administrator will delete accounts that aren’t) as these fields are needed in the payment procedure which uses the personal printing account (used for normal printing at the department) to charge for all bookings.

The price for a 3D print depends on the amount of used material (both model and support material). Files need be in STL format. With Netfabb Basic, you can import the STL file and get an estimate on the volume. Exact prices can only be derived when the model is loaded in the 3D Printing software.

The printers are located in Rendsburggade 14, Second floor. Behind the elevator tower.
To use the printers, you need to book them via the booking system, and simply swipe your access card to the right of the 3d printers.

There is a booking fee of DKK 20,- for each booking you make (not hourly).
Filament and general use is free of charge for study/research related stuff.