If your printer has more than one extruder, you’ll need to make a few adjustments in your slicer before printing with Palette, or even running a calibration print.
To print with an extruder other than T0, you’ll need to enable Beta Features (Tools > Enable Beta Features), and may need to ensure that your printer profile has its extruder count set greater than 1.
You can use any one of your printer’s extruders to print, but will need to confirm that your start sequence is set up correctly. In particular, your start sequence must:
- Contain no tool change commands
- Only prime/purge one extruder, rather than each extruder
- Only heat the extruder that will be used for printing
Pre-Configured Start Sequences
FlashForge Creator Pro, Tool 0 (right extruder)
; **** Replicator 1 dual start.gcode ****
M73 P0 ; enable build progress
G162 X Y F3000 ; home XY maximum
G161 Z F1200 ; home Z minimum
G92 Z-5 ; set Z to -5
G1 Z0 ; move Z to 0
G161 Z F100 ; home Z slowly
M132 X Y Z A B ; recall home offsets
G1 X0 Y50 Z80 F9000;
G1 X150 Y-70 Z60 F9000 ; move to wait position right hand side of the table
G130 X20 Y20 Z20 A20 B20 ; lower stepper Vrefs while heating
M126 S[fan_speed_pwm]
M140 S[bed0_temperature] T0
M134 T0 ; stabilize bed temperature
M104 S[extruder0_temperature] T0
M133 T0 ; stabilize right extruder temperature
G130 X127 Y127 Z40 A127 B127 ; default stepper Vrefs
M73 P1 ;@body (notify GPX body has started)
; **** end of start.gcode ****
FlashForge Creator Pro, Tool 1 (left extruder)
; **** Replicator 1 dual start.gcode ****
M73 P0 ; enable build progress
G162 X Y F3000 ; home XY maximum
G161 Z F1200 ; home Z minimum
G92 Z-5 ; set Z to -5
G1 Z0 ; move Z to 0
G161 Z F100 ; home Z slowly
M132 X Y Z A B ; recall home offsets
G1 X0 Y50 Z80 F9000;
G1 X150 Y-70 Z60 F9000 ; move to wait position right hand side of the table
G130 X20 Y20 Z20 A20 B20 ; lower stepper Vrefs while heating
M140 S<BED> T0
M134 T0 ; stabilize bed temperature
M104 S<TEMP> T1
M133 T1 ; stabilize left extruder temperature
G130 X127 Y127 Z40 A127 B127 ; default stepper Vrefs
M73 P1 ;@body (notify GPX body has started)
; **** end of start.gcode ****
FlashForge Dreamer, Tool 0 (right extruder)
M146 r255 g0 b0 ; Set lights to red while preheating
M907 X100 Y100 Z40 A100 B100 ; Set motor current
M132 X Y Z A B ; Recall home offsets
M612 X34.5 Y0.0 ; Set toolhead offsets
G28 ; Home axes
G92 E0 ; Zero extruders
G1 Z100 F3300 ; Lower Z
G1 X-110.5 Y-74 F6000 ; Move to wait position
M7 ; Wait for bed to stabilize
M6 T0 ; Wait for right extruder to reach target temp
G1 X-100 Y-74 F9000 ; Move to front left corner of bed
M146 r255 g255 b255 ; Turn lights on for print
G1 Z0.5 F3300 ; Position nozzle
FlashForge Dreamer, Tool 1 (left extruder)
M146 r255 g0 b0 ; Set lights to red while preheating
M907 X100 Y100 Z40 A100 B100 ; Set motor current
M132 X Y Z A B ; Recall home offsets
M612 X34.5 Y0.0 ; Set toolhead offsets
G28 ; Home axes
G92 E0 ; Zero extruders
G1 Z100 F3300 ; Lower Z
G1 X-110.5 Y-74 F6000 ; Move to wait position
M7 ; Wait for bed to stabilize
M6 T1 ; Wait for left extruder to reach target temp
G1 X-100 Y-74 F9000 ; Move to front left corner of bed
M146 r255 g255 b255 ; Turn lights on for print
G1 Z0.5 F3300 ; Position nozzle
Manually Configure Your Start Sequence
As an example, here’s the start sequence for a FlashForge Creator Pro (line numbers have been added for clarity; they are not a valid part of the start sequence):
1. ; **** Replicator 1 dual start.gcode ****
2. M73 P0 ; enable build progress
3. G162 X Y F3000 ; home XY maximum
4. G161 Z F1200 ; home Z minimum
5. G92 Z-5 ; set Z to -5
6. G1 Z0 ; move Z to 0
7. G161 Z F100 ; home Z slowly
8. M132 X Y Z A B ; recall home offsets
9. M135 T0 ; switch to right extruder
10. G1 X0 Y50 Z80 F9000
11. G1 X150 Y-70 Z60 F9000 ; move to wait position
12. G130 X20 Y20 Z20 A20 B20 ; lower stepper Vrefs while heating
13. M127
14. M140 S40 T0 ; set bed to 40 degrees C
15. M134 T0 ; stabilize bed temp
16. M104 S210 T0 ; set right extruder to 210 degrees C
17. M104 S210 T1 ; set left extruder to 210 degrees C
18. M133 T0 ; stabilize right extruder temp
19. M133 T1 ; stabilize left extruder temp
20. G130 X127 Y127 Z40 A127 B127 ; default stepper Vrefs
21. M73 P1 ;@body (notify GPX body has started)
22. ; **** end of start.gcode ****
To print with just T0 (in this case, the right extruder), lines #17 and #19 need to be deleted. To print with just T1 (left extruder), lines #16 and #18 need to be deleted.
In either case, line #9 needs to be deleted, as the start sequence must not contain a tool change command.
If your start sequence contains a purge or nozzle prime for each extruder, you’ll want to remove the entire purge associated with the extruders you’re not printing with, in addition to the tool change that activates that tool before the purge. When printing with an extruder other than T0, Chroma will automatically insert a tool change at the beginning of your start sequence, ensuring that the start sequence will be associated with the correct tool, and any purge (if present) will be performed with that tool.
If you have any additional questions, please send us a message at support@mosaicmfg.com.
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