< p >嗨。几天前我也有同样或类似的问题，同样的症状。挤出机会不断地跳过一个台阶，当它这样做时，会发出“哐啷”的声音。喷嘴堵塞了。挤出机的步进器会用力尝试，明显地弯曲给料机的外壳，然后跳过一个步，或从纤维上剥离一块，每次都会发出响亮的“哐啷”声。一段时间后，灯丝全部被咀嚼，没有任何东西抵抗给料齿轮。喂食器可以自由转动，因此不再发出沉闷的声音，但仍然不喂食。你不能挤出或收回长丝。< / p >
Clip the filament with the wire cutter between the feeder and the nozzle riser. Remove the nozzle using the lug wrench that came with the printer. With the power off, the stepper is free to turn. Push out the stump of wadded up filament, in the normal feed direction. It will have a balled up clump of melt on it, which is what prevents it from withdrawing.
Replace the nozzle. I’m using the 0.2 mm nozzle while I wait for DHL to deliver the replacements. It might be possible to salvage the old nozzle but heating it to filament melt temperature and then… clean it out somehow. I haven’t tried this yet.
Why did the nozzle clog? In my case, an accumulation of clumsy abuse is most likely, like dropping the Z-axis harshly by turning off the power. Most recently for me, the rafts of two parts overlapped in several places. The nozzle crashed through some already laid lines as it printed. I should have stopped and restarted that print, but didn’t. Simple wear might do it also.
Best regards.
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