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Repeated , consistent under extrusion

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Posted (edited) · Repeated , consistent under extrusion

Can someone help me understand this please.


Have 4 failed prints where the problem occurs roughly after 5 mm build height.

Looks like it just doesnt feed the filament in the same rate as before.

I thought I had a grinding problem stopping the feed but last fail looked ok on the wire. (been changing retraction parameters and infill to reduce retractions)

Cura preview looks good too 


Nozzle isnt clogged, I can feed manually after a failed print and start a new print without doing anything, first 5 mm still works fine.


Edit :Its like its keeping the flow rate from ironing the planar surface while moving upwards... 






Edited by AndersK

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Posted · Repeated , consistent under extrusion

Might be on to something.

First failed prints was Cura 4

Now printing with Cura 3,6 and I'm past the problem area.

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