Hi, I recently build the K8400 and already did sucsessful prints. After finally setting up the printer I wanted to use the 2nd nozzle as well, where I stepped into a serious problem:
the extruder flawlessly loads and unloads the filament
the print starts but no filament is being feeded into the nozzle. The extruder does not move at all.
-I’ve already performed any test I could imagine, which were:
replacing stepper driver
using another stepper motor
reflashing the 2 print head software version 1.4
checking all software settings
Does anybody have any idea what could be wrong and help me to drill down the issue? How can I measure if something is wrong on the mainboard?
Apologies, what do you mean? Both of the print heads are properly setup in repetier host. the 2nd nozzle also heats up, the print is being started but the filament is not being feeded. no movement of the extruder stepper :-((
Dear all experianced Pros,
Has anybody an idea on my issue? I strongly believe that everything is well setup for the 2nd nozzle, it loads the filament, also heats up the nozzle and finally start the print but no further filament is being transported. The extruder is not working… The unload of the filament is again working flawlessly.
Unfortunatly Velleman has also closed my ticket on this issue and just referred to this forum. How should I continue to get my 2nd nozzle working?
One stupid question: Did you order your slicer to use the second nozzle?
All running procedures you described are actions directly on the printer using the build- in firmware procedures.
For printing the commands are generated in your slicer. But when you start the printing and did not switch to the second extruder, all commands will be addressed to the first extruder.
If this one is not heated (below a critical temperature), all commands will be dropped (check serial output from printer).
You may check this manually (using a console)
M109 T1 S190 ; set temperature to 190°C on extruder 2 and wait until temperature is reached
G92 E0 ; reset extrusion setting
G1 E5 ; extrude 5mm
T1 ; set Extruder 2 the active extruder
G92 E0 ; reset extrusion setting
G1 E5 ; extrude 5mm
Thx Raby, I now got what you mean after I found your other post for a kinda similar issue… I missunderstood the topic that you need to choose “Vertex Single Head” if you just want to switch from right to left printhead instead of two-color prints.
After doing this, the issue is gone and I can use the 2nd printhead.