Inhalt

Dieser Workshop vermittelt dir das Wissen, um die Prusa i3 sowie den Lulzbot TAZ6 im FabLab nutzen zu können.

Zielgruppe

• Mitglieder des FabLab München, die die 3D-Drucker nutzen wollen
• Alle, die an einer praktischen Einführung in das Arbeiten mit (FDM/FFF) 3D-Druckern interessiert sind

Ablauf

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

Dauer

Der Kurs dauert etwa 3 Stunden

Maximale Teilnehmerzahl

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

Workshopleiter

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

Termine

Aktuelle Termine findest Du im Programm.

Tickets

Kursinhalt: Kurzübersicht (eng)

3D Printer

• Available for beginners are the Ultimaker Original, the 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.
  
• Also make sure that the roll of filament is not loose but in tension to avoid it tangling during the print.
• 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. 
• If the material does not come out, 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 230°C when you print PLA.
  
• DO NOT print faster than 120% the default Cura setting.
• DO NOT attempt to repair the machine yourself. 
• DO NOT remove any screws.

CURA Expert Settings

• Use Cura version not older than 4.5.x
  
• Download from Ultimaker site.
• Under menu option “Machine” choose 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 1mm)
• fill density (the default setting of 20% is in most cases sufficient.  Do not fill more than 30%. The denser the print setting, the more risk of it warping.)
• Print speed: 40-50 mm/s
• Print temperature: 215°C
• Bed temperature: 60°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.
  
  

Tips and Tricks

• 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

• Thingiverse to share 3D Models
• YouMagine to share 3D Models
• Ultimaker Forum
• Netfabb.com for software to repair 3D geometry

Materials

• For the health all of us, it is only allowed to use PLA on all 3D Printers inside the FabLab.
  Any flexible filaments, filaments with wood and other experimental material are not allowed.
• Exeption PETG can be only used after consultation with the 3d team.