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Repeated , consistent under extrusion

AndersK

By AndersK
in Ultimaker 3D printers

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AndersK

AndersK 59

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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... 

 

image.thumb.png.e4ab65ee47cc5a340c614bd2cbdb3dfb.png

 

 

IMG_20190415_074628.thumb.jpg.abc67661829907a8d929d9bd1af0cf16.jpg

Edited by AndersK
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