Jump to content
Ultimaker Community of 3D Printing Experts
  • Sign Up

Change line default Cura 3.3 with custom printer

Recommended Posts

Posted · Change line default Cura 3.3 with custom printer

Hello to all,
I want to change the lines highlighted in yellow, are the gcode that cure has set by default, I have a custom printer fdm but I can not find which json file in the folder ? \ Program Files \ Ultimaker Cura 3.3 \ resources \ definitions I have to change, I tried to look in fdmextruder and fdmprinter but I did not find anything, can someone help me?
Thanks for the time spent Maurizio


;Filament used: 0m
;Layer height: 0.2
;Generated with Cura_SteamEngine 3.3.1
M104 T1 S200
M109 T1 S200

M82 ;absolute extrusion mode

; Start GCode General
;Sliced at: Thu 17-05-2018 10:46:40
G21        ;metric values
G90        ;absolute positioning
M82        ;set extruder to absolute mode
M107       ;start with the fan off
G28 X0 Y0  ;move X/Y to min endstops
G28 Z0     ;move Z to min endstops
G1 Z15.0 F{travel_speed} ;move the platform down 15mm
;M25         ;PAUSE
G1 F{travel_speed}

M83 ;relative extrusion mode
G1 F1500 E-6.5
G1 F1200 E-9.5
M82 ;absolute extrusion mode

;Estrusore 1
T1                      ;Switch to the 2nd extruder
G92 E0                  ;zero the extruded length
G1 F200 E10             ;extrude 10mm of feed stock
G92 E0                  ;zero the extruded length again

Share this post

Link to post
Share on other sites
Posted · Change line default Cura 3.3 with custom printer

You can't change all the highlighted lines from the definition files.


The absolute extrusion lines should change to relative extrusion lines if you change the "Relative Extrusion" setting in the "Special Modes" category.


The M104 and M109 lines that appear before the start gcode will not be inserted there if you include them in your start gcode as follows:

M104 T{initial_extruder_nr} S{material_print_temperature_layer_0,initial_extruder_nr}

M109 T{initial_extruder_nr} S{material_print_temperature_layer_0,initial_extruder_nr}

Cura looks for the string "material_print_temperature" in your start gcode. If it is not there, it will prepend its own heatup sequence.


You can also use a post processing script (eg search and replace) to edit the output before it is saved/exported.

Share this post

Link to post
Share on other sites
Posted · Change line default Cura 3.3 with custom printer

Thank you lot.

I have include the gcode commands as your indication, and now the first problem is OK.

I have anather question is possible change this value ?

G1 F1500 E-6.5 in to E10
G1 F1200 E-9.5 in to E0


Thank you



Share this post

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Our picks

    • Talking additive | The 3D printing podcast
      Why should we be the only ones asking questions? Join us and ask Jabil all your questions on September 22nd 5pm CET
        • Like
      • 2 replies
    • Ultimaker masterclass: Optimizing your Ultimaker Cura workflow
      Save your seat for either broadcast on September 23.
      What will you learn?
      · Best practices for iterative print preparation and every lesson you should learn from each print
      · The right way to use per-object settings and when they are most useful
      · Easy-to-use resources for anyone who wants to develop their own printer definitions, plugins, or print profiles
      · How to optimize print profile settings and whether to “keep” or “discard” changes
      · When is the right time to export your drawing from CAD? (Based on Ultimaker Cura’s surprising power as 3D control software)
      · And a whole lot more tips and tricks!
      How can I join?
      This free masterclass will take place twice:
      1. 11am CEST (5pm SGT, 5am EDT)
      2. 5pm CEST (11am EDT, 8am PDT, 11pm SGT)
        • Like
      • 0 replies
    • Do you use 3D printing at work? Let us know
      It doesn't matter if you are using 1 Ultimaker or 10, there is inspiration in everything. We're looking for ...
      • 1 reply
  • Create New...