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UM3 Stuck Printcores


neo-ninja

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Posted · UM3 Stuck Printcores

Hey All,

 

I was after some advice my UM3 printcores are stuck. I had a massive pla disaster. Which covered the printhead in pla. I got it all cleaned off and the machine works fine. BUT i cant get the print cores out.They can move up and down just fine but will not click out no matter how hard i compress and pull.

 

Any thoughts?

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    Posted · UM3 Stuck Printcores

    Did you remove the filament from the top?  Sometimes I still have the filament going into the core and forget you can't pull them out until you remove the filament first.

     

    The whole head comes apart if necessary:

    https://fbrc8.zendesk.com/hc/en-us/articles/115004541446-Printhead-Ultimaker-3-Ultimaker-3-Extended-

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    Posted · UM3 Stuck Printcores

    By the way it sounds like you are describing a head flood.  It can be caused by your magnets not gripping well - if so pry them out with a screw driver about 1/2mm.

     

    Or it can be caused by your prints not sticking to the bed.  Here is the fix for the second cause:

     

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