Disable waiting codes and retraction (Cura 4.7)

[mbr3m3r 0]

Hi, I need to disable the waiting codes (M109, M190 and M105) and the -1.0 retraction at the beginning of each print.

 

 

I tried modifying the JSON (fdmprinter.def.json located in C:\Program Files\Ultimaker Cura 4.7\resources\i18n) like:

 

#: fdmprinter.def.json
msgctxt "material_bed_temp_wait label": { "default_value": false },
msgid "Wait for Build Plate Heatup"
msgstr ""

#: fdmprinter.def.json
msgctxt "material_bed_temp_wait description": { "default_value": false },
msgid ""
"Whether to insert a command to wait until the build plate temperature is "
"reached at the start."
msgstr ""

#: fdmprinter.def.json
msgctxt "material_print_temp_wait label": { "default_value": false },
msgid "Wait for Nozzle Heatup"
msgstr ""

#: fdmprinter.def.json
msgctxt "material_print_temp_wait description": { "default_value": false },
msgid "Whether to wait until the nozzle temperature is reached at the start."
msgstr ""

 

And the JSON from my specific printer (robo_3d_r1.def.json located in C:\Program Files\Ultimaker Cura 4.7\resources\definitions) like:

 

 

{
    "name": "Robo 3D R1",
    "version": 2,
    "inherits": "fdmprinter",
    "metadata": {
        "visible": true,
        "author": "Ultimaker",
        "manufacturer": "Robo 3D",
        "file_formats": "text/x-gcode",
        "platform_offset": [ 0, 0, 0],
        "machine_extruder_trains":
        {
            "0": "robo_3d_r1_extruder_0"
        }
    },

    "overrides": {
    "material_print_temp_wait": {
        "default_value": false
    },
        "machine_start_gcode": {
            "default_value": " "
        },
    "material_bed_temp_wait": { 
        "default_value": false 
        },
        "machine_end_gcode": {
            "default_value": " M104 S0                     ;extruder heater off\n M140 S0                     ;heated bed heater off (if you have it)\n G91                                    ;retract the filament a bit before lifting the nozzle, to release some of the pressure\n ;move Z up a bit and retract filament even more\n G28 X0 Y0                              ;move X/Y to min endstops, so the head is out of the way\n M84                         ;steppers off\n G90                         ;absolute positioning\n"
        },
    "material_print_temp_wait": { "default": false },
        "cool_min_layer_time": { "default_value": 7 },
        "retraction_speed": { "default_value": 50 },
        "cool_min_speed": { "default_value": 19 },
        "support_angle": { "default_value": 50 },
        "prime_tower_size": { "default_value": 8.660254037844387 },
        "support_enable": { "default_value": true },
        "raft_airgap": { "default_value": 0.2 },
        "layer_height_0": { "default_value": 0.15 },
        "material_flow": { "default_value": 100 },
        "infill_sparse_density": { "default_value": 10 },
        "wall_thickness": { "value": "1.2" },
        "retraction_amount": { "default_value": 3 },
        "layer_height": { "default_value": 0.2 },
        "speed_print": { "default_value": 40 },
        "machine_extruder_count": { "default_value": 1 },
        "retraction_combing": { "default_value": "off" },
        "machine_heated_bed": { "default_value": true },
        "machine_center_is_zero": { "default_value": false },
        "machine_height": { "default_value": 210 },
        "adhesion_type": { "default_value": "raft" },
        "machine_gcode_flavor": { "default_value": "RepRap (Marlin/Sprinter)" },
        "machine_depth": { "default_value": 245 },
        "machine_width": { "default_value": 225 },
        "support_z_distance": { "default_value": 0.22 },
        "machine_name": { "default_value": "ROBO 3D R1" }
    }
}
 

 

This deactivated the waiting code for the bed but I'm still getting the waiting codes for the hotend like:

 

;FLAVOR:Marlin
;TIME:4940
;Filament used: 8.64955m
;Layer height: 0.3
;MINX:57.311
;MINY:74.813
;MINZ:0.2
;MAXX:152.688
;MAXY:170.188
;MAXZ:8.3
;ZOFFSETPROCESSED
;Generated with Cura_SteamEngine 4.7.0
M140 S80
M104 S205
M105
M109 S205
M82 ;absolute extrusion mode
G28 X0 Y0
G28 Z0
G29
G92 E0
G92 E0
G1 F3000 E-1
;LAYER_COUNT:28
;LAYER:0

 

Any ideas why isn't this modifications on the JSON file working?

 

EDIT: I was able to get rid of the waiting codes setting up the temperatures on the gcode header, but I have no idea where to start or how to get rid of the "G1 F3000 E-1" at the header. 

 

 

Edited August 30, 2020 by mbr3m3r

[GregValiant 786]

The problem with the retraction line is that if you change the setting for Retraction Distance or Retraction Speed in Cura, then the line changes.  I use the Search and Replace plugin to change that line to "G92 E-1" and I get nice starts to my skirt/brim.  If the search criteria doesn't match the current Distance / Speed settings the plugin can't find the line to change it.  I tend not to change the Distance or Speed very often so Search and Replace works for me.

[mbr3m3r 0]

Thanks! Yeah that "Search and replace" plugin works great!

 

I'm just curious why didn't the mods in the JSON file apply for the hotend. But all good now.