Hello, strange thing happend today. I changed the material for the second extruder to ABS.
So, first is PLA, second is ABS. I want only to print with the second.
First try was to just set all objects to the second extruder ... slice ... and see, some lines are done with the first extruder! WTF. Its printing, but a few lines wrong material!
Second try was to deactivate the first extruder in Cura ... slice ... all lines are for second extruder. But (BUT) if i try to print, it keeps the cold extruder active and is happy extruding with the second extruder in parking position (blocked nuzzle).
I really have no clue for what i paid the money!? For having a 3D printer or for getting a bunch of useless CRAP.
I dont talk about material loading or unloading.
Its about printing.
I have my model setup to print only from E1. So, the print, the support and the brim is manually set to E1.
The printer heats correctly E1. But even if i select before E1, the printer just switch to E0. After bed leveling the printer have E0 down but extruding E1 so that all the material runs down from its parking position.
HOWEVER: if i keep the brim at E0 (both hotends are heated up correctly) it prints the brim with E0 and switch then correct to E1 and finish the job correctly (except the stupid Halt() on the bed overheating issue, but that is another case) .
Thanks for the info for unloading ABS. But, as i told, its not my problem for now.
With dual extrusion the filament needs to be set up manually before each print.
The extruder on the left is extruder one, filament from it needs to be fed into the hotend, filament from extruder two needs to be inserted second and fed until it hits the path of the first filament inside the splitter, it then need to be pulled back by about half an inch. Then you are ready to start the dual print.
Mixing materials with different printing temperatures can have this effect. Ideally you want to find a temperature that is with in 10 degrees that both material are happy to print at.
Switching entirely from ABS to PLA through the same nozzle will require you to heat up the hotend to the ABS printing temperature and then manually feed PLA through it until all of the ABS has been purged and you can print the PLA at it's recommended temperature. If this isn't doen then the ABS, which prints at a higher temperature, will block the nozzle.