Yes, I had replaced the teflon spacer too.
Does this happen with any type of filament?
Yes, it happens with at least 3 different filaments I have tried. I changed the tube clamp on top of the hot end too, which seems to help keep the bowden tube in place, but the prints are still very thin and porous, and they crumble easily. Any suggestion?
You said that you replaced the hotend does that include the nozzle?
If not it might be partially clogged maybe?
Have you tried increasing the printing temperature a bit to see if you still have the same effect?
I have tried two different nozzles (both new), and the problem persisted with both. The flow is better when I raise the temperature to 240-250, but the print quality is not good at that high a temperatures (I use PLA).
when the nozzle is hot, can you push the filament through by hand by turning the feeder wheel? Does the filament come out as a regular strand?
Check also in the feeder mechanism, when it is opened, if the little black wheel can turn freely.
Check if there is any filament dust on the knurled bolt in the feeder mechanism….. what else to check?...
How about the latch that closes up the extruder? Is there any slack in there?
Thank you all for your suggestions. It turned out the problem was the extruder motor.
did you also replace the teflon spacer?
or looked at it closely?
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