Ok, so I pulled the trigger on a 3d printer. 1 big issue...

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I went with a Creality K1. Aside from some initial confusion getting it set up, it was fantastic.

So, I did run out of the filament that it was packaged with. No biggie, I bought extra. But once it was changed, the printer is no longer printing properly. It'll print like 20% then just stop extruding filament. It continues on as if it is, and will say it completed the job even though it didn't do it at all.

I've been googling the last couple of days, and all I can find is that possibly the extruder is faulty? Apparently this model sometimes ships with faulty extruders that sound like it gives similar issues to what I have. Haven't really found much info about that though, some YouTube videos mentioned it and said you can get a replacement for $2.00 but I'm only seeing $60 ones, and I'm not even 100% that's what the issue is.

Anyone here with experience that can maybe point me in the right way? Confirm whether it may be the extruder and which to buy to replace it or something.