dan62103
Posts: 4
Joined: Wed Feb 13, 2019 10:04 pm

Modifying Startup Script

Hello,

I've been 3D printing for quite a while on my Flashforge Creator Pro. I'm comfortable and successful with all manner of basic prints. I was starting to try out combining colors by splitting the process into 2 and changing filament in between. This seems like it's commonly done by others. I've seen a lot of guides, but none addressing my specific problem. I'm having a problem with the startup script and initial purge/wipe of the nozzle. In a standard print, that script does a good job and leaves the initial purged filament in the front right corner before it starts. That's fine for my 1st process. However, when I'm trying to print in 2 colors with the 1st process at 0-5mm and the second starting at 5mm, the script has the 2nd print do the wipe, which then causes the nozzle fan and printhead to bump into what I've already printed as it takes up most of the bed. It creates an awful noise that i'm worried could do damage and ruins the print or possibility of success. So 2 questions:

1. How can I modify the starting script so that the FF homes, heats, and goes straight to the correct point to print the 2nd process, which is above the 1st?
2. If I have to remove the purge/wipe commands, is that going to cause a printing problem and is there any alternative that would work with this method?

I've never modified the scripts. I see where they are and in general can tell where it's doing the wipe, but I'm not sure what to specifically take out and/or modify.

; **** 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
M135 T0 ; load right extruder offsets
G1 X150 Y-70 Z30 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
G92 A0 B0 ; zero extruders
G1 Z0.4 ; position nozzle
G1 X110 Y-70 E25 F300 ; purge nozzle
G1 X120 Y-70 Z0.15 F1200 ; slow wipe
G1 X110 Y-70 Z0.5 F1200 ; lift
G92 A0 B0 ; zero extruders
M73 P1 ;@body (notify GPX body has started)
; **** end of start.gcode ****

Thanks for your help!
S3D-Jason
Posts: 1383
Joined: Sun May 31, 2015 6:01 am

Re: Modifying Startup Script

Did you make sure to select the "Both Extruders" auto-configure option at the top? That should already update the scripts to correctly handle dual extrusion.

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