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MMU retracting filament too far  

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remmert1
(@remmert1)
Active Member
MMU retracting filament too far

I have recently started having a problem where the MMU retracts the filament too far and cannot re-load the filament the next time.

It does not happen all the time.

I have verified the PINDA sensor position. There is no stringing on the tip and nothing that is pulling the filament back.

Any help would be appreciated.

Posted : 05/03/2021 5:42 pm
EJTH
 EJTH
(@ejth)
Eminent Member
RE: MMU retracting filament too far

Check if the FINDA sensor is clogged with old filament strings. I had a similar issue when trying to manually load filament the other day after printing TPU and PLA at the same time (which is obviously not recommended, also I think i need to hone in my TPU profile a bit, but MMU settings in slicer are a little confusing).

Simply unscrew the PTFE tube and press a piece of filament through the sensor from the MMU side, if it is clogged with debree it should fall right out.

This post was modified 3 years ago by EJTH
Posted : 11/03/2021 2:07 pm
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