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Dieser Workshop vermittelt dir das Wissen, um die 3D-Drucker Ultimaker, Prusa i3 sowie den Lulzbot TAZ6 und Prusa i3 im FabLab nutzen zu können.


  • Begrüßung, Vorstellungsrunde
  • Theorie: Wie funktioniert das (FDM/FFF-) 3D-Drucker-Verfahren?
  • Datenvorbereitung mit der freien Software Curamit dem Freeware Slicer Cura, welche Einstellungen brauche ich und was machen diese?
  • Hands-On: 3D-Drucker bedienen (Drucker vorbereiten, Filament-Wechsel, Druckbett ausrichten, Druck starten, etc)
  • Troubleshooting
  • Tipps und Tricks
  • Fragen


Ein Kurs hat 6 Teilnehmer*innen
Wärend der Corona Auflagen maximal 4 Teilnehmer/innen


Der Kurs wird abwechselnd von verschiedenen, erfahrenen FabLab-Mitgliedern durchgeführt. Details siehe Programm.


  • Available for beginners are the Ultimaker Original, the Ultimaker +, Lulzbot TAZ6 und Prusa i3
  • German RepRap X400 can be used after a personal demonstration from Andreas Kahler.  An appointment can be made with him after some experience with the Ultimakers.


  • Prusa i3 and the Lulzbot TAZ6.

3D Printer Preparation

  • The nozzle should be heated before any filament is either inserted or removed from it.  Check that the filament is fitted with a dust collecting tube before it is fed to the machine.  After the filament is fed, make sure that the clips that holds the filament against the feeding gear is properly fastened. 
  • Also make sure that the roll of filament is not loose but in tension to avoid it tangling during the print.for Ultimaker Original:
  • The bed should be covered with blue tape to reduce the print from sticking to the bed.
  • The bed can be unmounted from the machine.
  • When starting a print, it is generally a good idea to check for that the bed is leveled.  The bed can be leveled by first homing the nozzle and adjusting the 2 screws at top and 2 at the bottom of the bed. 


  • Is is only allowed to print with PLA.

Happy Printing 

  • Note that the fan starts not at the very beginning of the print.
  • Observe the first few layers to catch unwanted results.
  • During the print the speed and temperature settings can be changed. 


Trouble Shooting

If a jamb occurs,

  • check if the filament is fed properly into the machine. 
  • Erosion of the filament can prevent it from being fed into the printer.  In that case, take the filament out and trim it so that when it is fed back into the machine, the damaged part is fed past the feeding gear of the printer. Loosen the clip at the feeder and push the filament manually until the material comes out smoothly.
  • If the material does not come out, heat the nozzle to 240°C briefly and try pushing the filament.
  • If still no material comes out, try the acupuncture method with a small needle.
  • or any other problem cannot be solved form you, write a komment into workshop protocol and describe the error.
  • DO NOT heat the machine over 240°C230°C when you print PLA.
  • DO NOT print faster than 150% 120% the default Cura setting.
  • DO NOT attempt to repair the machine yourself. 
  • DO NOT remove out the bowdentube.


  • any screws.

CURA Expert Settings

  • Use Cura version not older than 24.5.x
  • Download from Ultimaker site.
  • Under menu option “Machine” choose (“Ultimaker Original +” or “Ultimaker Original”)the right Maschine!
  • Under menu option “Expert” choose “switch to full settings…”.
  • Start from the default settings.  (When changing settings, follow pop-up suggestions from Cura.)
  • Import file (by dragging and dropping into screen of from the menu option “File”)
  • Rotate/Lay Flat, Support
  • Resize
  • View in layer mode to see printing path, the structure of the fill density, and the number of layers.
  • Layer height and shell thickness (multiple of nozzle diameter, usually 0.8mm)
  • bottom/top thickness (multiples of layer height, recommended no less than 3x1mm)
  • fill density (the default setting of 20% is in most cases sufficient.  Do not fill more than 50%30%. The denser the print setting, the more risk of it warping.)
  • Print speed: 40-50 mm/s
  • Print temperature: 210°C215°C
  • Bed temperature: 70°C60°C
  • Adjust setting for Support and Brim according to the overhang of your printed geometry. 
  • Create G-code by choosing “Save GCode” from menu option “File” and save onto SD-Card.


  • Print very slowly in the beginning.
  • Cover the machine with the white panels to stabilize the temperature in the printer.
  • Lesser the infill, lesser the warping.
  • Plan for a longer print time than suggested by Cura
  • Print small at first.  Larger prints are more complicated.


3D-Printing in FabLab

  • Use the Online Calendar.  Respect reserved time by other members and events.
  • Don’t forget to use the white tag to leave your name and contact info.
  • If you encounter any problems or issues, enter it into the Werkstattprotokoll.


Further infos



  • It is recommended For the health all of us, it is only allowed to use PLA on all 3D Printers inside the UltimakersFabLab.  
    Any flexible filaments, filaments with wood and other experimental material are not recommendedallowed.  

  • Exeption PETG can be only used after consultation with the 3d team.