嗨。几天前我有相同或相似的问题，症状相同。挤出机将不断地跳过一步，使其产生嘈杂的“困境”。喷嘴堵塞。挤出机步进器将尝试强烈，明显地弯曲进料器壳体，然后通过跳过一步，或者剥离灯丝的块，或者每次制作一个响亮的“铮铮”。过了一会儿，灯丝都咀嚼了，没有任何东西可以抵抗进料器齿轮。馈线能够自由转动，因此停止横跨但仍未喂食。您无法挤出或撤销灯丝。
将灯丝用馈线和喷嘴提升管之间的剪线钳夹住。使用带有打印机随附的凸耳扳手拆下喷嘴。随着电源关闭，步进器可以自由转动。 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.
