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Loading TPU on UM s5


John_Mag

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Posted · Loading TPU on UM s5

I have had a couple of issues loading and unloading UM TPU 95A. When loading the filament I have to have at least 80mm showing in the bowden tube. This is more than twice that required for PLA. If I do not have at least 80mm no material will extrude through the print core before it times out.

 

When unloading UM TPU 95A, after the printer has cooled down, the filament does not retract from the print core and the drive wheel cuts a groove in the filament. Thus far I have had to heat the print core to 180 degree in order to remove the filament.

Is this normal or is there a problem?

I am using the current version of the firmware, AA 0.4 print core.

John

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    Posted · Loading TPU on UM s5

    I have seen similar things when loading and unloading TPU, but I never had the problem that the filament didn't retract and that I had to heat up the print core again to unload it. Also with PP which is also a little bit flexible, I have these issues.

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