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profiles: initialize Ender-3 V3 SE extrusion mode before purge (#15489)
# Description The Ender-3 V3 SE machine start G-code performs its purge using absolute-style extrusion positions: ```gcode G1 ... E15 G1 ... E30 ``` However, the machine start G-code does not explicitly initialize the positioning or extrusion mode before these commands. OrcaSlicer emits the printer's custom `machine_start_gcode` before its own generated `G90` / `M82` or `M83` preamble. This means the purge can inherit the extrusion mode left active by the printer. For example, if `M83` relative extrusion is still active, such as after a cancelled print where normal end G-code was not executed: - `E15` extrudes 15 mm - `E30` extrudes another 30 mm Instead of the intended 15 mm followed by another 15 mm. This change explicitly adds: ```gcode G90 ;Absolute positioning M82 ;Absolute extrusion mode ``` before the purge sequence so startup behaviour is deterministic and does not depend on inherited printer state. The change is applied consistently to all Ender-3 V3 SE nozzle variants: - 0.2 mm - 0.4 mm - 0.6 mm - 0.8 mm No print speeds, temperatures, retraction values, machine limits, or other profile settings are changed. # Screenshots/Recordings/Graphs Not applicable. This is a machine start G-code profile fix. ## Tests - Confirmed all four Ender-3 V3 SE profiles use the same `E15` / `E30` purge sequence. - Confirmed the current profiles do not explicitly issue `G90`, `M82`, or `M83` before that purge. - Confirmed OrcaSlicer emits `machine_start_gcode` before its generated positioning/extrusion-mode preamble. - Verified the modified JSON for all four machine profiles parses successfully. - Verified the added commands make the purge explicitly use absolute XYZ and absolute extrusion state.
This commit is contained in:
Paulcake
@@ -121,7 +121,7 @@
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"Generic PLA @Creality Ender-3V3-all"
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],
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"file_start_gcode": ";FLAVOR:Marlin\\n;TIME:{print_time_total_sec}\\n;Filament used:{used_filament_length}m\\n;Layer height:{layer_height}",
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"machine_start_gcode": "M220 S100 ;Reset Feedrate \nM221 S100 ;Reset Flowrate \n \nM104 S[nozzle_temperature_initial_layer] ;Set final nozzle temp \nM190 S[bed_temperature_initial_layer_single] ;Set and wait for bed temp to stabilize \nG28 ;Home \nG92 E0 ;Reset Extruder \nG1 Z2.0 F3000 ;Move Z Axis up \nG1 X-2.1 Y20 Z0.28 F5000.0 ;Move to start position \nM109 S[nozzle_temperature_initial_layer] ;Wait for nozzle temp to stabilize \nG1 X-2.1 Y145.0 Z0.28 F1500.0 E15 ;Draw the first line \nG1 X-2.4 Y145.0 Z0.28 F5000.0 ;Move to side a little \nG1 X-2.4 Y20 Z0.28 F1500.0 E30 ;Draw the second line \nG92 E0 ;Reset Extruder \nG1 E-1.0000 F1800 ;Retract a bit \nG1 Z2.0 F3000 ;Move Z Axis up \nG1 E0.0000 F1800",
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"machine_start_gcode": "M220 S100 ;Reset Feedrate \nM221 S100 ;Reset Flowrate \n \nG90 ;Absolute positioning \nM82 ;Absolute extrusion mode \n \nM104 S[nozzle_temperature_initial_layer] ;Set final nozzle temp \nM190 S[bed_temperature_initial_layer_single] ;Set and wait for bed temp to stabilize \nG28 ;Home \nG92 E0 ;Reset Extruder \nG1 Z2.0 F3000 ;Move Z Axis up \nG1 X-2.1 Y20 Z0.28 F5000.0 ;Move to start position \nM109 S[nozzle_temperature_initial_layer] ;Wait for nozzle temp to stabilize \nG1 X-2.1 Y145.0 Z0.28 F1500.0 E15 ;Draw the first line \nG1 X-2.4 Y145.0 Z0.28 F5000.0 ;Move to side a little \nG1 X-2.4 Y20 Z0.28 F1500.0 E30 ;Draw the second line \nG92 E0 ;Reset Extruder \nG1 E-1.0000 F1800 ;Retract a bit \nG1 Z2.0 F3000 ;Move Z Axis up \nG1 E0.0000 F1800",
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"machine_end_gcode": "G91 ;Relative positionning \nG1 E-2 F2700 ;Retract a bit \nG1 E-2 Z0.2 F2400 ;Retract and raise Z \nG1 X5 Y5 F3000 ;Wipe out \nG1 Z10 ;Raise Z more \nG90 ;Absolute positionning \n \nG1 X0 Y220 ;Present print \nM106 S0 ;Turn-off fan \nM104 S0 ;Turn-off hotend \nM140 S0 ;Turn-off bed \n \nM84 X Y E ;Disable all steppers but Z",
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"scan_first_layer": "0",
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"disable_m73": "1",
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@@ -121,7 +121,7 @@
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"Generic PLA @Creality Ender-3V3-all"
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],
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"file_start_gcode": ";FLAVOR:Marlin\\n;TIME:{print_time_total_sec}\\n;Filament used:{used_filament_length}m\\n;Layer height:{layer_height}",
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"machine_start_gcode": "M220 S100 ;Reset Feedrate \nM221 S100 ;Reset Flowrate \n \nM104 S[nozzle_temperature_initial_layer] ;Set final nozzle temp \nM190 S[bed_temperature_initial_layer_single] ;Set and wait for bed temp to stabilize \nG28 ;Home \nG92 E0 ;Reset Extruder \nG1 Z2.0 F3000 ;Move Z Axis up \nG1 X-2.1 Y20 Z0.28 F5000.0 ;Move to start position \nM109 S[nozzle_temperature_initial_layer] ;Wait for nozzle temp to stabilize \nG1 X-2.1 Y145.0 Z0.28 F1500.0 E15 ;Draw the first line \nG1 X-2.4 Y145.0 Z0.28 F5000.0 ;Move to side a little \nG1 X-2.4 Y20 Z0.28 F1500.0 E30 ;Draw the second line \nG92 E0 ;Reset Extruder \nG1 E-1.0000 F1800 ;Retract a bit \nG1 Z2.0 F3000 ;Move Z Axis up \nG1 E0.0000 F1800",
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"machine_start_gcode": "M220 S100 ;Reset Feedrate \nM221 S100 ;Reset Flowrate \n \nG90 ;Absolute positioning \nM82 ;Absolute extrusion mode \n \nM104 S[nozzle_temperature_initial_layer] ;Set final nozzle temp \nM190 S[bed_temperature_initial_layer_single] ;Set and wait for bed temp to stabilize \nG28 ;Home \nG92 E0 ;Reset Extruder \nG1 Z2.0 F3000 ;Move Z Axis up \nG1 X-2.1 Y20 Z0.28 F5000.0 ;Move to start position \nM109 S[nozzle_temperature_initial_layer] ;Wait for nozzle temp to stabilize \nG1 X-2.1 Y145.0 Z0.28 F1500.0 E15 ;Draw the first line \nG1 X-2.4 Y145.0 Z0.28 F5000.0 ;Move to side a little \nG1 X-2.4 Y20 Z0.28 F1500.0 E30 ;Draw the second line \nG92 E0 ;Reset Extruder \nG1 E-1.0000 F1800 ;Retract a bit \nG1 Z2.0 F3000 ;Move Z Axis up \nG1 E0.0000 F1800",
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"machine_end_gcode": "G91 ;Relative positionning \nG1 E-2 F2700 ;Retract a bit \nG1 E-2 Z0.2 F2400 ;Retract and raise Z \nG1 X5 Y5 F3000 ;Wipe out \nG1 Z10 ;Raise Z more \nG90 ;Absolute positionning \n \nG1 X0 Y220 ;Present print \nM106 S0 ;Turn-off fan \nM104 S0 ;Turn-off hotend \nM140 S0 ;Turn-off bed \n \nM84 X Y E ;Disable all steppers but Z",
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"scan_first_layer": "0",
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"disable_m73": "1",
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@@ -121,7 +121,7 @@
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"Generic PLA @Creality Ender-3V3-all"
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],
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"file_start_gcode": ";FLAVOR:Marlin\\n;TIME:{print_time_total_sec}\\n;Filament used:{used_filament_length}m\\n;Layer height:{layer_height}",
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"machine_start_gcode": "M220 S100 ;Reset Feedrate \nM221 S100 ;Reset Flowrate \n \nM104 S[nozzle_temperature_initial_layer] ;Set final nozzle temp \nM190 S[bed_temperature_initial_layer_single] ;Set and wait for bed temp to stabilize \nG28 ;Home \nG92 E0 ;Reset Extruder \nG1 Z2.0 F3000 ;Move Z Axis up \nG1 X-2.1 Y20 Z0.28 F5000.0 ;Move to start position \nM109 S[nozzle_temperature_initial_layer] ;Wait for nozzle temp to stabilize \nG1 X-2.1 Y145.0 Z0.28 F1500.0 E15 ;Draw the first line \nG1 X-2.4 Y145.0 Z0.28 F5000.0 ;Move to side a little \nG1 X-2.4 Y20 Z0.28 F1500.0 E30 ;Draw the second line \nG92 E0 ;Reset Extruder \nG1 E-1.0000 F1800 ;Retract a bit \nG1 Z2.0 F3000 ;Move Z Axis up \nG1 E0.0000 F1800",
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"machine_start_gcode": "M220 S100 ;Reset Feedrate \nM221 S100 ;Reset Flowrate \n \nG90 ;Absolute positioning \nM82 ;Absolute extrusion mode \n \nM104 S[nozzle_temperature_initial_layer] ;Set final nozzle temp \nM190 S[bed_temperature_initial_layer_single] ;Set and wait for bed temp to stabilize \nG28 ;Home \nG92 E0 ;Reset Extruder \nG1 Z2.0 F3000 ;Move Z Axis up \nG1 X-2.1 Y20 Z0.28 F5000.0 ;Move to start position \nM109 S[nozzle_temperature_initial_layer] ;Wait for nozzle temp to stabilize \nG1 X-2.1 Y145.0 Z0.28 F1500.0 E15 ;Draw the first line \nG1 X-2.4 Y145.0 Z0.28 F5000.0 ;Move to side a little \nG1 X-2.4 Y20 Z0.28 F1500.0 E30 ;Draw the second line \nG92 E0 ;Reset Extruder \nG1 E-1.0000 F1800 ;Retract a bit \nG1 Z2.0 F3000 ;Move Z Axis up \nG1 E0.0000 F1800",
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"machine_end_gcode": "G91 ;Relative positionning \nG1 E-2 F2700 ;Retract a bit \nG1 E-2 Z0.2 F2400 ;Retract and raise Z \nG1 X5 Y5 F3000 ;Wipe out \nG1 Z10 ;Raise Z more \nG90 ;Absolute positionning \n \nG1 X0 Y220 ;Present print \nM106 S0 ;Turn-off fan \nM104 S0 ;Turn-off hotend \nM140 S0 ;Turn-off bed \n \nM84 X Y E ;Disable all steppers but Z",
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"scan_first_layer": "0",
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"disable_m73": "1",
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@@ -121,7 +121,7 @@
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"Generic PLA @Creality Ender-3V3-all"
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],
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"file_start_gcode": ";FLAVOR:Marlin\\n;TIME:{print_time_total_sec}\\n;Filament used:{used_filament_length}m\\n;Layer height:{layer_height}",
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"machine_start_gcode": "M220 S100 ;Reset Feedrate \nM221 S100 ;Reset Flowrate \n \nM104 S[nozzle_temperature_initial_layer] ;Set final nozzle temp \nM190 S[bed_temperature_initial_layer_single] ;Set and wait for bed temp to stabilize \nG28 ;Home \nG92 E0 ;Reset Extruder \nG1 Z2.0 F3000 ;Move Z Axis up \nG1 X-2.1 Y20 Z0.28 F5000.0 ;Move to start position \nM109 S[nozzle_temperature_initial_layer] ;Wait for nozzle temp to stabilize \nG1 X-2.1 Y145.0 Z0.28 F1500.0 E15 ;Draw the first line \nG1 X-2.4 Y145.0 Z0.28 F5000.0 ;Move to side a little \nG1 X-2.4 Y20 Z0.28 F1500.0 E30 ;Draw the second line \nG92 E0 ;Reset Extruder \nG1 E-1.0000 F1800 ;Retract a bit \nG1 Z2.0 F3000 ;Move Z Axis up \nG1 E0.0000 F1800",
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"machine_start_gcode": "M220 S100 ;Reset Feedrate \nM221 S100 ;Reset Flowrate \n \nG90 ;Absolute positioning \nM82 ;Absolute extrusion mode \n \nM104 S[nozzle_temperature_initial_layer] ;Set final nozzle temp \nM190 S[bed_temperature_initial_layer_single] ;Set and wait for bed temp to stabilize \nG28 ;Home \nG92 E0 ;Reset Extruder \nG1 Z2.0 F3000 ;Move Z Axis up \nG1 X-2.1 Y20 Z0.28 F5000.0 ;Move to start position \nM109 S[nozzle_temperature_initial_layer] ;Wait for nozzle temp to stabilize \nG1 X-2.1 Y145.0 Z0.28 F1500.0 E15 ;Draw the first line \nG1 X-2.4 Y145.0 Z0.28 F5000.0 ;Move to side a little \nG1 X-2.4 Y20 Z0.28 F1500.0 E30 ;Draw the second line \nG92 E0 ;Reset Extruder \nG1 E-1.0000 F1800 ;Retract a bit \nG1 Z2.0 F3000 ;Move Z Axis up \nG1 E0.0000 F1800",
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"machine_end_gcode": "G91 ;Relative positionning \nG1 E-2 F2700 ;Retract a bit \nG1 E-2 Z0.2 F2400 ;Retract and raise Z \nG1 X5 Y5 F3000 ;Wipe out \nG1 Z10 ;Raise Z more \nG90 ;Absolute positionning \n \nG1 X0 Y220 ;Present print \nM106 S0 ;Turn-off fan \nM104 S0 ;Turn-off hotend \nM140 S0 ;Turn-off bed \n \nM84 X Y E ;Disable all steppers but Z",
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"scan_first_layer": "0",
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"disable_m73": "1",
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