copy start.gcode and end.gcode to your printers settings
To deal with Ultimaker/Cura#19204 open Cura's configuration directory (Cura -> Help -> Show Configuration Folder) copy CuraPrependBugFix.py to the scripts folder
in Cura -> Extensions -> Post Processing -> Modify G-Code -> "Add A Script" find "Cura Prepend Temperature Bugfix" and enable
| # Authored by: GregValiant (Greg Foresi) 6/24 | |
| # Removes the M104 and M109 hot end temperature prepend lines if 'material_print_temperature' is in the StartUp Gcode (also covers 'material_print_temperature_layer_0') | |
| # Removes the M140 and M190 bed temperature prepend lines if 'material_bed_temperature' is in the StartUp Gcode (also covers 'material_bed_temperature_layer_0') | |
| # source https://github.com/Ultimaker/Cura/issues/19204#issuecomment-2163070633 | |
| from ..Script import Script | |
| from UM.Application import Application | |
| class CuraPrependBugFix(Script): | |
| def getSettingDataString(self): | |
| return """{ | |
| "name": "Cura Prepend Temperature Bugfix", | |
| "key": "CuraPrependBugFix", | |
| "metadata": {}, | |
| "version": 2, | |
| "settings": | |
| { | |
| "enable_prepend_bugfix": | |
| { | |
| "label": "Enable this script", | |
| "description": "When enabled the script will check if Bed and Hot End temperature prepends were required. It will go ahead and remove the prepend temperature lines from before the StartUp Gcode if they were not.", | |
| "type": "bool", | |
| "default_value": true, | |
| "enabled": true | |
| } | |
| } | |
| }""" | |
| def execute(self, data): | |
| # Exit if the script is not enabled | |
| if not bool(self.getSettingValueByKey("enable_prepend_bugfix")): | |
| return data | |
| startup = data[1].split("\n") | |
| startup_gcode = Application.getInstance().getGlobalContainerStack().getProperty("machine_start_gcode", "value") | |
| prepend_hot_end = True | |
| prepend_bed = True | |
| modified_data = [] | |
| # Check the startup gcode for hot end temperature replacement patterns (keywords) | |
| if "material_print_temperature" in startup_gcode: | |
| prepend_hot_end = False | |
| # Check the startup gcode for bed temperature replacement patterns (keywords) | |
| if "material_bed_temperature" in startup_gcode: | |
| prepend_bed = False | |
| # If the prepend is required then exit. | |
| if prepend_hot_end and prepend_bed: | |
| return data | |
| for index, line in enumerate(startup): | |
| first_part = startup[index][0:4] | |
| if not prepend_hot_end: | |
| if first_part in ["M104", "M109"]: | |
| continue | |
| if not prepend_bed: | |
| if first_part in ["M140", "M190"]: | |
| continue | |
| if not prepend_hot_end and not prepend_bed: | |
| if first_part == "M105": | |
| continue | |
| # Once the M82 line is reached then we are past the prepend lines so just continue. | |
| if line.startswith("M82"): | |
| prepend_hot_end = True | |
| prepend_bed = True | |
| modified_data.append(line) | |
| data[1] = "\n".join(modified_data) | |
| return data |
| G91 ;Relative positioning | |
| G1 E-2 F2700 ;Retract a bit | |
| G1 E-2 Z0.2 F2400 ;Retract and raise Z | |
| G1 X5 Y5 F3000 ;Wipe out | |
| G1 Z10 ;Raise Z more | |
| G90 ;Absolute positioning | |
| G1 X0 Y{machine_depth} ;Present print | |
| M106 S0 ;Turn-off fan | |
| M104 S0 ;Turn-off hotend | |
| M140 S0 ;Turn-off bed | |
| M84 X Y E ;Disable all steppers but Z |
| ; Ender 3 Custom Start G-code | |
| G92 E0 ; Reset Extruder | |
| M140 S{material_bed_temperature_layer_0} ; set final bed temp | |
| M104 S160 ; set temporary nozzle temp to prevent oozing during homing | |
| G4 S10 ; allow partial nozzle warmup | |
| G28 ; Home all axes | |
| G29 ; BL Touch | |
| G1 Z2.0 F3000 ; Move Z Axis up little to prevent scratching of Heat Bed | |
| G1 X0.1 Y20 Z0.3 F5000.0 ; Move to start position | |
| M104 S{material_print_temperature_layer_0} ; set final nozzle temp | |
| M190 S{material_bed_temperature_layer_0} ; wait for bed temp to stabilize | |
| M109 S{material_print_temperature_layer_0} ; wait for nozzle temp to stabilize | |
| G1 X0.1 Y200.0 Z0.3 F1500.0 E15 ; Draw the first line | |
| G1 X0.4 Y200.0 Z0.3 F5000.0 ; Move to side a little | |
| G1 X0.4 Y20 Z0.3 F1500.0 E30 ; Draw the second line | |
| G92 E0 ; Reset Extruder | |
| G1 Z2.0 F3000 ; Move Z Axis up little to prevent scratching of Heat Bed | |
| G1 X5 Y20 Z0.3 F5000.0 ; Move over to prevent blob squish |