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UM2 ABS End-of-Job Retraction Issue


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Posted · UM2 ABS End-of-Job Retraction Issue

 

  • UM2
  • Ultimaker Brand 2.85 Black ABS
  • Bed 90c
  • Extruder 250c

 

Im having some trouble with the retraction of filiment during the completion (or cancellation) of an ABS print job. What is does is when the job is finished it retracts the filiment out of the nozzle. When I go to run another job, it does not push it back down far enough and ends up starting the print with no extrusion. What I have to do is go into the Advanced menu and move the filiment back in until I see it in the bowden tube just before the extruder. I set the standard retraction from 4.25mm to 3mm. I'm ssuming this is the area of setting for this problem but I think im wrong as the end-of-job retraction seems much more than 4.25mm. Is this correct to solve this issue?

Thanks

 

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    Posted · UM2 ABS End-of-Job Retraction Issue

    This is a bug that I have experienced also. Not sure if it's fixed in latest firmware but what I do is when I power on the machine and my hand is near the back I often grab the filament where it enters the feeder and slide it in a little more if it will go. The feeder motor has no power when you first turn on power.

     

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    Posted · UM2 ABS End-of-Job Retraction Issue

    I know this is not what you describe but I have noticed in one version, I think 15.02. that if you pause it will retract and move to the side and if you abort while paused it will then retract a second time as its homing. but if you abort from the tune menu it will just retract once.

    But I have to also push the material in a bit at the start to get it going.

     

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    Posted · UM2 ABS End-of-Job Retraction Issue

    Version is 15.02.01

    Thank you. I think its a combination of both your replies. This was my first attempt with ABS that failed 4 times on the factory 260c setting with no brim, I paused/abort the job each time. I do think that the initial retraction is further than the "speed" load action and is a bug. The PLA settings are perfect on this machine, I dont have an issue or failed print yet on that stuff. (knock on wood)

     

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