MMU2S Speed at filament change/eject  

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gernot.maxa
(@gonzomagx)
New Member

Maybe I'm just blind, but is there a way to change the speed at which the filament is ejected, or rather slow it down?
My problem is that my auto-rewind spool holders react too lazily and do not rotate in time because the filament is ejected at such a high speed.

Posted : 30/03/2020 10:27 am
pcweber
(@pcweber)
Estimable Member

IMHO the filament has to retract at the PRUSA projected speed to pull the filament end out of the extruder. This and the fact that this speed also effects the form of the filament ends. To get consistent filament ends using the PRUSA profiles one needs to fine-tune the temperature, speed and cooling steps in the filament profile. If the mmu is not up to speed then the entire process will not work properly.

Phil

Stay safe and healthy, Phil...
Posted : 31/03/2020 4:19 pm
robert.k71
(@robert-k71)
New Member

Hello Phil,

thank you, but not the ejecting speed on the first cm is the problem,
which is IMHO the form factor for the filament ends.
The complete extraction to the idler is to fast for our rewinder systems, and this would be nice if it´s possible to slow down.

Robert

Posted : 01/04/2020 4:49 pm
pcweber
(@pcweber)
Estimable Member

Have you tried putting the mmu in stealth mode?

Phil

Stay safe and healthy, Phil...
Posted : 01/04/2020 5:50 pm
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