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3D printing has come along by leaps and bounds.
The only way to fix this is to open up the printhead assembly and remove that pipe.
Then heat it up with hot water and get the filament out.
Lucas Gouveia / How-To Geek
Some filaments might be more heat sensitive and suffer from creep because of it.
If it happens no matter what, you may have to investigate your hot-end or recalibrate it.
Some stringing is inevitable with some models.
What’s maddening is that it’s not always happening for the same reason.
The first thing you should try is increasing the amount of “retraction” when slicing your prints.
The constant back-and-forth can grind out and bulge the film between the extruder’s wheels.
It was so bad for me at one point, that I just replaced the entire extruder.
Then tone down the amount or frequency of retraction.
In the meantime, I have another order of plastic frogs to fulfil.
