Ultimaker 2 SOP

Link to Ultimaker 2 user manual

About the Ultimaker 2

The Ultimaker 2 3D printer is for printing solid 3D models from digital files. It has a print bed size of 22.3 cm × 22.3 cm × 20.5 cm. It prints only in PLA (Polyactic Acid) filament.

Your STL file

You will need to have your part in .stl (Stereolithographic) format. Most CAD programs such as Solidworks can export in this format. It is preferable that the part is designed in metric and more specifically millimeters (mm), as Cura is unable to scale between inches and millimeters. Some CAD programs offer to export in mm scale even when the part is designed in inches, but this sometimes doesn’t work and the part will appear extremely small on the print bed. To eliminate headaches, design your part in millimeters.

Using Cura

Cura (2.7.0) is the software you will use to slice your 3D model(s) into layers and export them as toolpaths.

Arranging your part

Once all your parts are arranged on the bed and you are ready to print, head over to the toolbar on the right for your print settings. “Recommended” mode is a simpler view which allows you to control only infill percentage, support placement, and whether or not to include a raft for better build plate adhesion.

To change the print quality, select the dropdown on the top of the toolbar. This fills in all the other settings automatically. Notice how in this image the print it is set to “Low Quality.”

Custom Mode

Infill Density

You can adjust your infill settings using the dialog box. More infill produces a stronger part, but uses more filament and takes more time. Less infill will print faster but the part will be weaker.


Supports are done through a menu on the right side of the interface. For the Ultimaker 2, you merely have to check the box and you will have access to the following settings:

The Ultimaker 2 has only one extruder, so the support material will be the same material as your part.

Preparing the Print

Click “Prepare” in the bottom-right corner of the menu.

Finally, when you are ready to go, plug in the SD card reader into your computer.