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Um 2+ - no print after 1. Layer

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Posted · Um 2+ - no print after 1. Layer

So i have a strange problem.

My UM2+ is printing the frist layer well, all good, but then in secound and following i have a underextrusion, and nothing working...


I dont understand it...


what i did and try:

Leveling OK.

Coupler is changed and totally new

Feeder is cleaned and all ok

test print, with less speed


no idea, what the problem is and how i can fix it


Foto 11.03.20, 16 28 12.jpg

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Posted · Um 2+ - no print after 1. Layer

Couple things I would look at:


I had this happen once and the reason was I accidentally had a .25 nozzle selected in Cura and was actually running a .4 nozzle.


Another thing might be that your brim looks awfully close to the build plate? Might want to back your bed screws off just a LITTLE and see if it prints better. Maybe it created too much back pressure while printing the brim and first layer that it created problems for the subsequent layers?


Just my thoughts.

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