Octoprint questions  

Re: Octoprint questions

1. You should be able to do this in Slic3r (you certainly can in KISS). Start G-code may contain a T? which causes firmware to request extruder.

2. Yes, you should have G-Code to unload after print:

KISS example:
G1 Z<Z+1.0> E-4 F7200 ; Lift and retract NOTE other slicers may need relative positioning turned on to lift extruder 1mm
G1 X0 Y200 F3600 ; move bed for easy removal
G1 E12 F2100 ; unload filament
G1 E-80 F5000
G1 E-5 F3500
G1 E-5 F2400
G1 E-2 F1000
G1 E10 F300
G1 E-10 F300
G1 E10 F600
G1 E-10 F600
G1 E10 F900
G1 E-10 F900
G1 E15 F1200
G1 E-15 F1200
G1 E5 F600
G4 S1 ; pause 1 second
M107 ; turn off fan
M104 S0 ; turn off temperature
M140 S0 ; turn off heatbed
M84 ; disable motors


Peter

Re: Octoprint questions

Thanks Peter

Re: Octoprint questions

1. Is it possible to set the default extruder when creating gcode file in slic3r so that you don’t have to select extruder when the print starts?

Yes. You may have already sorted this out, but just in case....

1. Just double click on the object in Slic3r which will bring up the part Settings dialog. Change the Extruder value from 'default' to whichever number you want to use. Click on Okay.
2. Go to the Printer Settings tab - Custom G-code and delete the 'T?' in the Start G-code

If you plan on doing this alot then also save the printer settings for future use.

Re: Octoprint questions

@JASII that worked great thanks! What code do you use in slic3r to automatically unload the filament?

Re: Octoprint questions

@JASII that worked great thanks! What code do you use in slic3r to automatically unload the filament?

I have added no end code. I just use what's there which 'retracts' the last used filament. If I want to 'unload' any/all filament I use the LCD menu.

Re: Octoprint questions

OK, thanks. I find that filament tends to get stuck if I don't unload it after finishing a print. I think there is another thread out there which has the unload code.