Super !
MK4/MK4S with MMU Main-Plate with improovement steps *No more stuck or filament jam in the Extruder*
OBSOLETE! Successor model in description!
solution for fixing the isssue when filament is stucked in the extruder
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May 18, 2025
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Ich hab es vorher garnicht mit dem Standard Teil probiert und direkt das selbst gedruckt genommen und bis jetzt noch ein paar Tagen und diversen Drucken läuft es super
I switched the screws to 30mm with 10mm springs to decrease force and it seems to be working well. Using your plate and the stock idler with non-grooved bearings About to try it with flex filament...
hello, is this still working for you? I have the flat bearings and springs on hand, but no tool to strip the idler screws lol. I guess I could try using a tiny file I have.... (edited)
@RonWilliams_2252953 use a drill , put screw on drill, let it rotate, get close on file.
Bei mir läuft das Prima !
Danke für den Entwurf !!!!
But that part is a part of the original design.
But No worries, I have I double chaecked that part of the Mainplate, the only one function is to limit the movement of the swivel and idler nut.
So to me that hasn`t even a necessary function. It even has no contact to the filament movement, the grove is only related to the heatsink design and tolerences.
I will also remove that part and confirm that there is no issue.
Greets, Thorsten
Hi,
although I do not have problems with stuck filament (except when printing multimaterial) I just changed the parts as you said.
Did not yet run a test, but I got a problem with the small extra quide in your motor plate as it colides with the headsink.
I just broke it of, let's see if it works anyhow the way intend it to.
@Stefan_P
yes, that is an issue, with the cheaper PCCF it hapened on my side also, I tried to anneal the Print directly after finished for 2 hrs in Oven at 110°C and let it inside oven, whithout opening the door let slowly cool down for additional 4 hrs, or once the oven is at ambient temp. then I give them another 2 days, and these 4 prints were stable at this point.
Ago I had Prusament PCCF, (just empty) there this part, even direct after finished print was stable.
In the meantime, I tent to rais the nozzle temp again and seeif the inter-layer bounding is now more stable whithout annealing.
@ThorstenLach_1801966
Ich antworte mal auf Deutsch :-)
Der kleine Stift ist bei der Montage nicht abgebrochen, ich habe ihn selbst abgebrochen. Auf der Gegenseite am Kühlkörper ist schlicht keine Öffnung in die der Stift passen könnte. Es sieht zwar so aus, als wäre da ein Plastikteil eingesetzt, das man entfernen kann (dann würde es wohl passen) aber das war mir zu viel, also habe ich das Teil abgeknickt.
Ob es daran liegt weiss ich nicht, aber die Meldung über festsitzendes Filament kommt trotzdem ab und an, aber nur beim Wechseln im Mehrfarbdruck.
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Just switching out the idler bearings has worked great for me so far, I am just waiting on some pccf and then I'll be trying out the new mainplate :). Great discovery though.