3DPrinting
3DPrinting is a place where makers of all skill levels and walks of life can learn about and discuss 3D printing and development of 3D printed parts and devices.
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I am guessing you are talking about PLA here?
First, I don't think it's the extruder crushing it, I think your filament is brittle.
Whenever you bend PLA (e.g. unroll it from the spool, or even worse, run it through the bowden tube, it develops microcracks.
In the space of a few days, these cracks make the filament super brittle.
Before loading the filament, take the loose end of the filament and bend it a bit. If it breaks like spaghetti, that part is brittle due to these cracks. Keep going until you reach a part that you can bend by almost 90° without it snapping. Break/cut it off at that point and load only the non-brittle part of the filament.
Its crushing it
Yeah, ok, that looks pretty crushed.
Did you maybe "release" the extruder spring tension adjustment screw in the wrong direction? (Maybe screw that screw to the limit in the other direction and check if that removes the issue)
If that doesn't sove the issue, there are only two possibilities:
I dismanteled the extruder. And swapped filament, I think I fixed it.
Nice! Yeah, pre-assembled extruders are sometimes assembled wrong. Had it before.