CORE ONE MMU3 not feeding through FINDA
I have a CORE ONE and an MMU3, both purchased assembled and both functioning fine until the last few days. During a long two-filament print, my CORE ONE reported a filament not triggering issue. I removed the relevant filament and shaped the tip, but it would not feed (loud chattering from the FINDA. The same happens now with all filament positions, so I think the jam is in the FINDA block itself.
I have checked the paths for all five filaments from the tubes through to the pulleys. All are clear. If I set the FINDA to any position, then manually rotate the shaft to move it to one side, and then press the second button on the MMU3, the filament feeds forward smoothly and silently.
It I insert filament from the front of the FINDA, the ball lifts and the red light switches off. I cannot push the filament any further from the front. I'm not sure if I should be able to.
I have tried moving the FINDA all the way to the right and blowing pressurised air through it as much as I can (and more generally from every other angle). There is no sign of anything coming out from the back.
However, it still cannot load and feed the selected filament - just loud chattering.
So, I assume there is a blockage behind the FINDA sensor and in front of where the pulley would feed the filament in.
Is there any easy way to check and clear that space? Do I need to dismantle the MMU3, or is there something else I should try first?
Many thanks, Donald
Best Answer by JoanTabb:
Move the selector to the right and you should be able to push filament all the wal through from the front. Than check that all filaments are undamaged in ports 1 to 5
Regards Joan
RE: CORE ONE MMU3 not feeding through FINDA
I accidentally submitted that faster than I intended. I wanted to add a comment that I'd tried to find other suggestions, since this problem didn't seem like it could be new or unique, but I found nothing addressing what I understood to be the issue. Thanks for any help.
RE: CORE ONE MMU3 not feeding through FINDA
Just one more note. I removed the FINDA sensor and ball to see if that made it easier to clear any blockage, but it made no difference. I am unable to push filament through the space behind where the ball sits. Should I be able to do so? Is this a sign of some solid blockage?
RE: CORE ONE MMU3 not feeding through FINDA
Move the selector to the right and you should be able to push filament all the wal through from the front. Than check that all filaments are undamaged in ports 1 to 5
Regards Joan
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility.Location Halifax UK
RE: CORE ONE MMU3 not feeding through FINDA
Thanks. That's what I've been trying. I'm unable to push beyond the hole where the sensor ball sits, even when I've removed the sensor and ball. I wasn't confident to push any harder because I wasn't sure I was suppose to be able to get through getting the front (although I couldn't think what could make that difficult). I guess I'll give that another go, with a little more force, perhaps with the smallest of the Allen keys.
RE: CORE ONE MMU3 not feeding through FINDA
Also dismantle the front part of the selector, which holds the brass screw fitting for the FESTO fitting. You will also get better access to the hole through which the filament passes. Mark the position of the front part against the selector (the part is not symmetrical) to return it in the correct position.
RE: CORE ONE MMU3 not feeding through FINDA
Thanks so much. It just took a lot more force than I'd expected to clear the blockage. All is now good. I guess I should have started by checking the part STL where it's clear the hole goes right through without obstruction:
https://www.printables.com/model/531604-mmu3-printable-parts/files#preview.file.qIFQT