Hi, until now I have printed dual material successfully. However since yesterday when the printer wants to switch nozzles from left to the right, I get this error: Extruder chagne failed
It tries 4~5 times to switch, the little flap moves to the right nozzle. It does not go there completely and it apparently detects that. If I give it a nudge with my finger at the right moment it works, but only that one time. Please help I did not find anything about it in the wiki, there only broken motors are considered, but the motor is working.
I also removed the flap and checked for damage and cleaned it, there seems to be nothing wrong with it.
I would just make sure there’s nothing stuck to the little magnets on that nozzle blocker. And make sure that it is straight. I’ve heard that some people had them get sticky. You can try to put a very small amount of oil on the back of that bracket where it rotates on the screw that holds it in place
yeah, i tried that, i can rotate and it does go well on there, just when the thing is moving it turns the other way
there is no dirt or other things, everything is still clean. There are two magnets on the right extruder, is the one that is angled supposed to be repelling? Because it is not.
The are with the flap is somewhat loose, how tight is it supposed to be?
I had a smiliar error on arrival with my H2D, my issue was the nozzle blocker was slightly bent which led to a collision and god-awful noise on first calibration when it tried switching extruders so I had to replace it with one of the thankfully included replacements and I haven’t had an issue since
Edit: Sorry, missed the last line that says you checked for damage and didn’t see anything. I’m really not sure what could be going wrong without further disassembly of your toolhead and at that point you’re best off submitting a support ticket with Bambu to see what they can do for you
thank you for your long answer, i didn’t notice the replacement flap! I checked it it looks identical, i switched them out anyways. But i did not have the issue even before the swap, after I unscrewed it and put it back again, maybe because I tightened it? This part seems to have a big random factor to it.